How to use NaN class of io.kotest.matchers.doubles package

Best Kotest code snippet using io.kotest.matchers.doubles.NaN

DoubleMatchersTest.kt

Source:DoubleMatchersTest.kt

...5import io.kotest.matchers.doubles.beGreaterThan6import io.kotest.matchers.doubles.beGreaterThanOrEqualTo7import io.kotest.matchers.doubles.beLessThan8import io.kotest.matchers.doubles.beLessThanOrEqualTo9import io.kotest.matchers.doubles.beNaN10import io.kotest.matchers.doubles.beNegativeInfinity11import io.kotest.matchers.doubles.bePositiveInfinity12import io.kotest.matchers.doubles.between13import io.kotest.matchers.doubles.gt14import io.kotest.matchers.doubles.gte15import io.kotest.matchers.doubles.lt16import io.kotest.matchers.doubles.lte17import io.kotest.matchers.doubles.negative18import io.kotest.matchers.doubles.positive19import io.kotest.matchers.doubles.shouldBeBetween20import io.kotest.matchers.doubles.shouldBeGreaterThan21import io.kotest.matchers.doubles.shouldBeGreaterThanOrEqual22import io.kotest.matchers.doubles.shouldBeLessThan23import io.kotest.matchers.doubles.shouldBeLessThanOrEqual24import io.kotest.matchers.doubles.shouldBeMultipleOf25import io.kotest.matchers.doubles.shouldBeNaN26import io.kotest.matchers.doubles.shouldBeNegative27import io.kotest.matchers.doubles.shouldBeNegativeInfinity28import io.kotest.matchers.doubles.shouldBePositive29import io.kotest.matchers.doubles.shouldBePositiveInfinity30import io.kotest.matchers.doubles.shouldBeZero31import io.kotest.matchers.doubles.shouldNotBeBetween32import io.kotest.matchers.doubles.shouldNotBeGreaterThan33import io.kotest.matchers.doubles.shouldNotBeGreaterThanOrEqual34import io.kotest.matchers.doubles.shouldNotBeLessThan35import io.kotest.matchers.doubles.shouldNotBeLessThanOrEqual36import io.kotest.matchers.doubles.shouldNotBeNaN37import io.kotest.matchers.doubles.shouldNotBeNegative38import io.kotest.matchers.doubles.shouldNotBeNegativeInfinity39import io.kotest.matchers.doubles.shouldNotBePositive40import io.kotest.matchers.doubles.shouldNotBePositiveInfinity41import io.kotest.matchers.doubles.shouldNotBeZero42import io.kotest.matchers.should43import io.kotest.matchers.shouldBe44import io.kotest.matchers.shouldNot45import io.kotest.matchers.shouldNotBe46import io.kotest.property.arbitrary.filterNot47import io.kotest.property.checkAll48import kotlin.Double.Companion.MAX_VALUE49import kotlin.Double.Companion.MIN_VALUE50import kotlin.Double.Companion.NEGATIVE_INFINITY51import kotlin.Double.Companion.NaN52import kotlin.Double.Companion.POSITIVE_INFINITY53import kotlin.math.absoluteValue54class DoubleMatchersTest : FreeSpec() {55  init {56    "Between matcher" - {57      "Every numeric double that is not Double.MAX_VALUE" - {58        "Should match between" - {59          "When it's equal to the first number of the range" - {60            "With tolerance" {61              checkAll(100, nonMinNorMaxValueDoubles) {62                it.shouldMatchBetween(it, it.slightlyGreater(), it.toleranceValue())63              }64            }65            "Without tolerance" {66              checkAll(100, nonMinNorMaxValueDoubles) {67                it.shouldMatchBetween(it, it.slightlyGreater(), 0.0)68              }69            }70          }71          "When it's between the first number of the range and the last one" - {72            "With tolerance" {73              checkAll(100, nonMinNorMaxValueDoubles) {74                it.shouldMatchBetween(it.slightlySmaller(), it.slightlyGreater(), it.toleranceValue())75              }76            }77            "Without tolerance" {78              checkAll(100, nonMinNorMaxValueDoubles) {79                it.shouldMatchBetween(it.slightlySmaller(), it.slightlyGreater(), 0.0)80              }81            }82          }83          "When it's equal to the last number of the range" - {84            "With tolerance" {85              checkAll(100, nonMinNorMaxValueDoubles) {86                it.shouldMatchBetween(it.slightlySmaller(), it, it.toleranceValue())87              }88            }89            "Without tolerance" {90              checkAll(100, nonMinNorMaxValueDoubles) {91                it.shouldMatchBetween(it.slightlySmaller(), it, 0.0)92              }93            }94          }95        }96        "Should not match between" - {97          "When it's smaller than the first number of the range" - {98            "With tolerance" {99              checkAll(100, nonMinNorMaxValueDoubles) {100                it.shouldNotMatchBetween(it.slightlyGreater(), it.muchGreater(), it.toleranceValue())101              }102            }103            "Without tolerance" {104              checkAll(100, nonMinNorMaxValueDoubles) {105                it.shouldNotMatchBetween(it.slightlyGreater(), it.muchGreater(), 0.0)106              }107            }108          }109          "When it's bigger than the last number of the range" - {110            "With tolerance" {111              checkAll(100, nonMinNorMaxValueDoubles) {112                it.shouldNotMatchBetween(it.muchSmaller(), it.slightlySmaller(), it.toleranceValue())113              }114            }115            "Without tolerance" {116              checkAll(100, nonMinNorMaxValueDoubles) {117                it.shouldNotMatchBetween(it.muchSmaller(), it.slightlySmaller(), 0.0)118              }119            }120          }121        }122      }123    }124    "Less than matcher" - {125      "Every numeric double" - {126        "Should be less than" - {127          "Numbers bigger than itself" {128            checkAll(100, nonMinNorMaxValueDoubles) {129              it shouldMatchLessThan it.slightlyGreater()130              it shouldMatchLessThan it.muchGreater()131            }132          }133          "Infinity" {134            checkAll(100, nonMinNorMaxValueDoubles) {135              it shouldMatchLessThan POSITIVE_INFINITY136            }137          }138        }139        "Should not be less than" - {140          "Itself" {141            checkAll(100, nonMinNorMaxValueDoubles) {142              it shouldNotMatchLessThan it143            }144          }145          "Numbers smaller than itself" {146            checkAll(100, nonMinNorMaxValueDoubles) {147              it shouldNotMatchLessThan it.slightlySmaller()148              it shouldNotMatchLessThan it.muchSmaller()149            }150          }151          "Negative Infinity" {152            checkAll(100, nonMinNorMaxValueDoubles) {153              it shouldNotMatchLessThan it154            }155          }156          "NaN" {157            checkAll(100, nonMinNorMaxValueDoubles) {158              it shouldNotMatchLessThan NaN159            }160          }161        }162      }163      "The non-numeric double" - {164        "NaN" - {165          "Should not be less than" - {166            "Any numeric double" {167              checkAll(100, nonMinNorMaxValueDoubles) {168                NaN shouldNotMatchLessThan it169              }170            }171            "Any non-numeric double" {172              nonNumericDoubles.forEach {173                NaN shouldNotMatchLessThan it174              }175            }176          }177        }178        "Positive Infinity" - {179          "Should not be less than" - {180            "Any numeric double" {181              checkAll(100, nonMinNorMaxValueDoubles) {182                POSITIVE_INFINITY shouldNotMatchLessThan it183              }184            }185            "Any non-numeric double" {186              nonNumericDoubles.forEach {187                POSITIVE_INFINITY shouldNotMatchLessThan it188              }189            }190          }191        }192        "Negative Infinity" - {193          "Should be less than" - {194            "Any numeric double" {195              checkAll(100, nonMinNorMaxValueDoubles) {196                NEGATIVE_INFINITY shouldMatchLessThan it197              }198            }199            "Positive Infinity" {200              NEGATIVE_INFINITY shouldMatchLessThan POSITIVE_INFINITY201            }202          }203          "Should not be less than" - {204            "Itself" {205              NEGATIVE_INFINITY shouldNotMatchLessThan NEGATIVE_INFINITY206            }207            "NaN" {208              NEGATIVE_INFINITY shouldNotMatchLessThan NaN209            }210          }211        }212      }213    }214    "Positive matcher" - {215      "Zero" - {216        "Should not be positive" {217          0.0.shouldNotMatchPositive()218        }219      }220      "Every positive number" - {221        "Should be positive" {222          checkAll(100, numericDoubles.filterNot { it == 0.0 }) {223            it.absoluteValue.shouldMatchPositive()224          }225        }226      }227      "Every non-positive number" - {228        "Should not be positive" {229          checkAll(100, numericDoubles) {230            (-it.absoluteValue).shouldNotMatchPositive()231          }232        }233      }234      "The non-numeric double" - {235        "Positive Infinity" - {236          "Should be positive" {237            POSITIVE_INFINITY.shouldMatchPositive()238          }239        }240        "Negative Infinity" - {241          "Should not be positive" {242            NEGATIVE_INFINITY.shouldNotMatchPositive()243          }244        }245        "NaN" - {246          "Should not be positive" {247            NaN.shouldNotMatchPositive()248          }249        }250      }251    }252    "Negative matcher" - {253      "Zero" - {254        "Should not be negative" {255          0.0.shouldNotMatchNegative()256        }257      }258      "Every negative number" - {259        "Should be negative" {260          checkAll(100, numericDoubles.filterNot { it == 0.0 }) {261            (-it.absoluteValue).shouldMatchNegative()262          }263        }264      }265      "Every non-negative number" - {266        "Should not be negative" {267          checkAll(100, numericDoubles) {268            it.absoluteValue.shouldNotMatchNegative()269          }270        }271      }272      "The non-numeric double" - {273        "Positive Infinity" - {274          "Should not be negative" {275            POSITIVE_INFINITY.shouldNotMatchNegative()276          }277        }278        "Negative Infinity" - {279          "Should be negative" {280            NEGATIVE_INFINITY.shouldMatchNegative()281          }282        }283        "NaN" - {284          "Should not be negative" {285            NaN.shouldNotMatchNegative()286          }287        }288      }289    }290     "MultipleOf matcher" - {291        "Matches a simple multiple" {292           300.0 shouldBeMultipleOf 1.0293        }294        "Fails due to precision problems" {295           shouldFail {296              3.6e300 shouldBeMultipleOf 1.2297           }298        }299     }300    "Less than or equal matcher" - {301      "Every numeric double" - {302        "Should be less than or equal" - {303          "Itself" {304            checkAll(100, nonMinNorMaxValueDoubles) {305              it shouldMatchLessThanOrEqual it306            }307          }308          "Numbers bigger than itself" {309            checkAll(100, nonMinNorMaxValueDoubles) {310              it shouldMatchLessThanOrEqual it.muchGreater()311              it shouldMatchLessThanOrEqual it.slightlyGreater()312            }313          }314          "Positive Infinity" {315            checkAll(100, nonMinNorMaxValueDoubles) {316              it shouldMatchLessThanOrEqual POSITIVE_INFINITY317            }318          }319        }320        "Should not be less than or equal" - {321          "Any number smaller than itself" {322            checkAll(100, nonMinNorMaxValueDoubles) {323              it shouldNotMatchLessThanOrEqual it.slightlySmaller()324              it shouldNotMatchLessThanOrEqual it.muchSmaller()325            }326          }327          "Negative Infinity" {328            checkAll(100, nonMinNorMaxValueDoubles) {329              it shouldNotMatchLessThanOrEqual NEGATIVE_INFINITY330            }331          }332          "NaN" {333            checkAll(100, nonMinNorMaxValueDoubles) {334              it shouldNotMatchLessThanOrEqual NaN335            }336          }337        }338      }339      "The non-numeric double" - {340        "NaN" {341          "Should not be less than or equal" - {342            "Any numeric double" {343              checkAll(100, nonMinNorMaxValueDoubles) {344                NaN shouldNotMatchLessThanOrEqual it345              }346            }347            "Positive Infinity" {348              NaN shouldNotMatchLessThanOrEqual POSITIVE_INFINITY349            }350            "Negative Infinity" {351              NaN shouldNotMatchLessThanOrEqual NEGATIVE_INFINITY352            }353            "Itself" {354              NaN shouldNotMatchLessThanOrEqual NaN355            }356          }357        }358        "Positive Infinity" - {359          "Should be less than or equal" - {360            "Positive Infinity" {361              POSITIVE_INFINITY shouldMatchLessThanOrEqual POSITIVE_INFINITY362            }363          }364          "Should not be less than or equal" - {365            "Any numeric double" {366              checkAll(100, nonMinNorMaxValueDoubles) {367                POSITIVE_INFINITY shouldNotMatchLessThanOrEqual it368              }369            }370            "Negative Infinity" {371              POSITIVE_INFINITY shouldNotMatchLessThanOrEqual NEGATIVE_INFINITY372            }373            "NaN" {374              POSITIVE_INFINITY shouldNotMatchLessThanOrEqual NaN375            }376          }377        }378        "Negative Infinity" - {379          "Should be less than or equal" - {380            "Any numeric double" {381              checkAll(100, nonMinNorMaxValueDoubles) {382                NEGATIVE_INFINITY shouldMatchLessThanOrEqual it383              }384            }385            "Positive Infinity" {386              NEGATIVE_INFINITY shouldMatchLessThanOrEqual POSITIVE_INFINITY387            }388            "Itself" {389              NEGATIVE_INFINITY shouldMatchLessThanOrEqual NEGATIVE_INFINITY390            }391          }392          "Should not be less than or equal" - {393            "NaN" {394              NEGATIVE_INFINITY shouldNotMatchLessThanOrEqual NaN395            }396          }397        }398      }399    }400    "Greater than matcher" - {401      "Every numeric double" - {402        "Should be greater than" - {403          "Numbers smaller than itself" {404            checkAll(100, nonMinNorMaxValueDoubles) {405              it shouldMatchGreaterThan it.slightlySmaller()406              it shouldMatchGreaterThan it.muchSmaller()407            }408          }409          "Negative infinity" {410            checkAll(100, nonMinNorMaxValueDoubles) {411              it shouldMatchGreaterThan NEGATIVE_INFINITY412            }413          }414        }415        "Should not be greater than" - {416          "Itself" {417            checkAll(100, nonMinNorMaxValueDoubles) {418              it shouldNotMatchGreaterThan it419            }420          }421          "Numbers greater than itself" {422            checkAll(100, nonMinNorMaxValueDoubles) {423              it shouldNotMatchGreaterThan it.slightlyGreater()424              it shouldNotMatchGreaterThan it.muchGreater()425            }426          }427          "NaN" {428            checkAll(100, nonMinNorMaxValueDoubles) {429              it shouldNotMatchGreaterThan NaN430            }431          }432          "Positive Infinity" {433            checkAll(100, nonMinNorMaxValueDoubles) {434              it shouldNotMatchGreaterThan POSITIVE_INFINITY435            }436          }437        }438      }439      "The non-numeric double" - {440        "NaN" - {441          "Should not be greater than" - {442            "Itself" {443              NaN shouldNotMatchGreaterThan NaN444            }445            "Any numeric double" {446              checkAll(100, numericDoubles) {447                NaN shouldNotMatchGreaterThan it448              }449            }450            "Positive Infinity" {451              NaN shouldNotMatchGreaterThan POSITIVE_INFINITY452            }453            "Negative Infinity" {454              NaN shouldNotMatchGreaterThan NEGATIVE_INFINITY455            }456          }457        }458      }459    }460    "Greater than or equal matcher" - {461      "Every numeric double" - {462        "Should be greater than or equal to" - {463          "Itself" {464            checkAll(100, nonMinNorMaxValueDoubles) {465              it shouldMatchGreaterThanOrEqual it466            }467          }468          "Numbers smaller than itself" {469            checkAll(100, nonMinNorMaxValueDoubles) {470              it shouldMatchGreaterThanOrEqual it.slightlySmaller()471              it shouldMatchGreaterThanOrEqual it.muchSmaller()472            }473          }474          "Negative Infinity" {475            checkAll(100, nonMinNorMaxValueDoubles) {476              it shouldMatchGreaterThanOrEqual NEGATIVE_INFINITY477            }478          }479        }480        "Should not be greater than or equal to" - {481          "Numbers bigger than itself" {482            checkAll(100, nonMinNorMaxValueDoubles) {483              it shouldNotMatchGreaterThanOrEqual it.slightlyGreater()484              it shouldNotMatchGreaterThanOrEqual it.muchGreater()485            }486          }487          "Positive Infinity" {488            checkAll(100, nonMinNorMaxValueDoubles) {489              it shouldNotMatchGreaterThanOrEqual POSITIVE_INFINITY490            }491          }492          "NaN" {493            checkAll(100, nonMinNorMaxValueDoubles) {494              it shouldNotMatchGreaterThanOrEqual NaN495            }496          }497        }498      }499      "The non-numeric double" - {500        "NaN" - {501          "Should not be greater than or equal to" - {502            "Itself" {503              NaN shouldNotMatchGreaterThanOrEqual NaN504            }505            "Any numeric double" {506              checkAll(100, numericDoubles) {507                NaN shouldNotMatchGreaterThanOrEqual it508              }509            }510            "Positive Infinity" {511              NaN shouldNotMatchGreaterThanOrEqual POSITIVE_INFINITY512            }513            "Negative Infinity" {514              NaN shouldNotMatchGreaterThanOrEqual NEGATIVE_INFINITY515            }516          }517        }518        "Positive Infinity" - {519          "Should be greater than or equal to" - {520            "Itself" {521              POSITIVE_INFINITY shouldMatchGreaterThanOrEqual POSITIVE_INFINITY522            }523            "Negative Infinity" {524              POSITIVE_INFINITY shouldMatchGreaterThanOrEqual NEGATIVE_INFINITY525            }526            "Any numeric double" {527              checkAll(100, numericDoubles) {528                POSITIVE_INFINITY shouldMatchGreaterThanOrEqual it529              }530            }531          }532          "Should not be greater than or equal to" - {533            "NaN" {534              POSITIVE_INFINITY shouldNotMatchGreaterThanOrEqual NaN535            }536          }537        }538        "Negative Infinity" - {539          "Should be greater than or equal to" - {540            "Itself" {541              NEGATIVE_INFINITY shouldMatchGreaterThanOrEqual NEGATIVE_INFINITY542            }543          }544          "Should not be greater than or equal to" - {545            "Any numeric double" {546              checkAll(100, numericDoubles) {547                NEGATIVE_INFINITY shouldNotMatchGreaterThanOrEqual it548              }549            }550            "Positive Infinity" {551              NEGATIVE_INFINITY shouldNotMatchGreaterThanOrEqual POSITIVE_INFINITY552            }553            "NaN" {554              NEGATIVE_INFINITY shouldNotMatchGreaterThanOrEqual NaN555            }556          }557        }558      }559    }560    "NaN matcher" - {561      "Every numeric double" - {562        "Should not be NaN" {563          checkAll(100, numericDoubles) {564            it.shouldNotMatchNaN()565          }566        }567      }568      "The non-numeric double" - {569        "NaN" - {570          "Should match NaN" {571            NaN.shouldMatchNaN()572          }573        }574        "Positive Infinity" - {575          "Should not match NaN" {576            POSITIVE_INFINITY.shouldNotMatchNaN()577          }578        }579        "Negative Infinity" - {580          "Should not match NaN" {581            NEGATIVE_INFINITY.shouldNotMatchNaN()582          }583        }584      }585    }586    "Positive Infinity matcher" - {587      "Any numeric double" - {588        "Should not match positive infinity" {589          checkAll(100, numericDoubles) {590            it.shouldNotMatchPositiveInfinity()591          }592        }593      }594      "The non-numeric double" - {595        "Positive Infinity" - {596          "Should match positive infinity" {597            POSITIVE_INFINITY.shouldMatchPositiveInfinity()598          }599        }600        "Negative Infinity" - {601          "Should not match positive infinity" {602            NEGATIVE_INFINITY.shouldNotMatchPositiveInfinity()603          }604        }605        "NaN" - {606          "Should not match positive infinity" {607            NaN.shouldNotMatchPositiveInfinity()608          }609        }610      }611    }612    "Negative Infinity matcher" - {613      "Any numeric double" - {614        "Should not match negative infinity" {615          checkAll(100, numericDoubles) {616            it.shouldNotMatchNegativeInfinity()617          }618        }619      }620      "The non-numeric double" - {621        "Negative Infinity" - {622          "Should match negative infinity" {623            NEGATIVE_INFINITY.shouldMatchNegativeInfinity()624          }625        }626        "Positive Infinity" - {627          "Should not match negative infinity" {628            POSITIVE_INFINITY.shouldNotMatchNegativeInfinity()629          }630        }631        "NaN" - {632          "Should not match negative infinity" {633            NaN.shouldNotMatchNegativeInfinity()634          }635        }636      }637    }638    "shouldBeZero" {639      (0.0).shouldBeZero()640      (-0.1).shouldNotBeZero()641      (0.1).shouldNotBeZero()642      MIN_VALUE.shouldNotBeZero()643      MAX_VALUE.shouldNotBeZero()644      NaN.shouldNotBeZero()645      POSITIVE_INFINITY.shouldNotBeZero()646      NEGATIVE_INFINITY.shouldNotBeZero()647    }648  }649  private fun shouldThrowAssertionError(message: String, vararg expression: () -> Any?) {650    expression.forEach {651      val exception = shouldThrow<AssertionError>(it)652      exception.message shouldBe message653    }654  }655  private fun Double.shouldMatchBetween(a: Double, b: Double, tolerance: Double) {656    this.shouldBeBetween(a, b, tolerance)657    this shouldBe between(a, b, tolerance)658    this.shouldThrowExceptionOnNotBetween(a, b, tolerance)659  }660  private fun Double.shouldNotMatchBetween(a: Double, b: Double, tolerance: Double) {661    this.shouldNotBeBetween(a, b, tolerance)662    this shouldNotBe between(a, b, tolerance)663    this.shouldThrowExceptionOnBetween(a, b, tolerance)664  }665  private fun Double.shouldThrowExceptionOnBetween(a: Double, b: Double, tolerance: Double) {666    when {667      this < a -> this.shouldThrowMinimumExceptionOnBetween(a, b, tolerance)668      this > b -> this.shouldThrowMaximumExceptionOnBetween(a, b, tolerance)669      else     -> throw IllegalStateException()670    }671  }672  private fun Double.shouldThrowMinimumExceptionOnBetween(a: Double, b: Double, tolerance: Double) {673    val message = "$this should be bigger than $a"674    shouldThrowExceptionOnBetween(a, b, tolerance, message)675  }676  private fun Double.shouldThrowMaximumExceptionOnBetween(a: Double, b: Double, tolerance: Double) {677    val message = "$this should be smaller than $b"678    shouldThrowExceptionOnBetween(a, b, tolerance, message)679  }680  private fun Double.shouldThrowExceptionOnBetween(681    a: Double,682    b: Double,683    tolerance: Double,684    message: String = "$this should be smaller than $b and bigger than $a"685  ) {686    shouldThrowAssertionError(message,687                              { this.shouldBeBetween(a, b, tolerance) },688                              { this shouldBe between(a, b, tolerance) })689  }690  private fun Double.shouldThrowExceptionOnNotBetween(691    a: Double,692    b: Double,693    tolerance: Double,694    message: String = "$this should not be smaller than $b and should not be bigger than $a"695  ) {696    shouldThrowAssertionError(message,697                              { this.shouldNotBeBetween(a, b, tolerance) },698                              { this shouldNotBe between(a, b, tolerance) })699  }700  private infix fun Double.shouldMatchLessThan(x: Double) {701    this shouldBe lt(x)702    this shouldBeLessThan x703    this should beLessThan(x)704    this shouldThrowExceptionOnNotLessThan x705  }706  private infix fun Double.shouldThrowExceptionOnNotLessThan(x: Double) {707    shouldThrowAssertionError("$this should not be < $x",708                              { this shouldNotBe lt(x) },709                              { this shouldNotBeLessThan x },710                              { this shouldNot beLessThan(x) })711  }712  private infix fun Double.shouldNotMatchLessThan(x: Double) {713    this shouldNotBe lt(x)714    this shouldNotBeLessThan x715    this shouldNot beLessThan(x)716    this shouldThrowExceptionOnLessThan x717  }718  private infix fun Double.shouldThrowExceptionOnLessThan(x: Double) {719    shouldThrowAssertionError("$this should be < $x",720                              { this shouldBe lt(x) },721                              { this shouldBeLessThan x },722                              { this should beLessThan(x) }723    )724  }725  private fun Double.shouldMatchPositive() {726    this.shouldBePositive()727    this shouldBe positive()728    this.shouldThrowExceptionOnNotPositive()729  }730  private fun Double.shouldThrowExceptionOnNotPositive() {731    shouldThrowAssertionError("$this should not be > 0.0",732                              { this shouldNotBe positive() },733                              { this.shouldNotBePositive() }734    )735  }736  private fun Double.shouldNotMatchPositive() {737    this.shouldNotBePositive()738    this shouldNotBe positive()739    this.shouldThrowExceptionOnPositive()740  }741  private fun Double.shouldThrowExceptionOnPositive() {742    shouldThrowAssertionError("$this should be > 0.0",743                              { this shouldBe positive() },744                              { this.shouldBePositive() }745    )746  }747  private fun Double.shouldMatchNegative() {748    this.shouldBeNegative()749    this shouldBe negative()750    this.shouldThrowExceptionOnNotNegative()751  }752  private fun Double.shouldThrowExceptionOnNotNegative() {753    shouldThrowAssertionError("$this should not be < 0.0",754                              { this shouldNotBe negative() },755                              { this.shouldNotBeNegative() }756    )757  }758  private fun Double.shouldNotMatchNegative() {759    this.shouldNotBeNegative()760    this shouldNotBe negative()761    this.shouldThrowExceptionOnNegative()762  }763  private fun Double.shouldThrowExceptionOnNegative() {764    shouldThrowAssertionError("$this should be < 0.0",765                              { this shouldBe negative() },766                              { this.shouldBeNegative() }767    )768  }769  private infix fun Double.shouldMatchLessThanOrEqual(x: Double) {770    this should beLessThanOrEqualTo(x)771    this shouldBe lte(x)772    this shouldBeLessThanOrEqual x773    this shouldThrowExceptionOnNotLessThanOrEqual x774  }775  private infix fun Double.shouldThrowExceptionOnNotLessThanOrEqual(x: Double) {776    shouldThrowAssertionError("$this should not be <= $x",777                              { this shouldNot beLessThanOrEqualTo(x) },778                              { this shouldNotBe lte(x) },779                              { this shouldNotBeLessThanOrEqual x }780    )781  }782  private infix fun Double.shouldNotMatchLessThanOrEqual(x: Double) {783    this shouldNot beLessThanOrEqualTo(x)784    this shouldNotBe lte(x)785    this shouldNotBeLessThanOrEqual x786    this shouldThrowExceptionOnLessThanOrEqual x787  }788  private infix fun Double.shouldThrowExceptionOnLessThanOrEqual(x: Double) {789    shouldThrowAssertionError("$this should be <= $x",790                              { this should beLessThanOrEqualTo(x) },791                              { this shouldBe lte(x) },792                              { this shouldBeLessThanOrEqual x }793    )794  }795  private infix fun Double.shouldMatchGreaterThan(x: Double) {796    this should beGreaterThan(x)797    this shouldBe gt(x)798    this shouldBeGreaterThan x799    this shouldThrowExceptionOnNotGreaterThan x800  }801  private infix fun Double.shouldThrowExceptionOnNotGreaterThan(x: Double) {802    shouldThrowAssertionError("$this should not be > $x",803                              { this shouldNot beGreaterThan(x) },804                              { this shouldNotBeGreaterThan (x) },805                              { this shouldNotBe gt(x) })806  }807  private infix fun Double.shouldNotMatchGreaterThan(x: Double) {808    this shouldNot beGreaterThan(x)809    this shouldNotBe gt(x)810    this shouldNotBeGreaterThan x811    this shouldThrowExceptionOnGreaterThan (x)812  }813  private infix fun Double.shouldThrowExceptionOnGreaterThan(x: Double) {814    shouldThrowAssertionError("$this should be > $x",815                              { this should beGreaterThan(x) },816                              { this shouldBe gt(x) },817                              { this shouldBeGreaterThan x })818  }819  private infix fun Double.shouldMatchGreaterThanOrEqual(x: Double) {820    this should beGreaterThanOrEqualTo(x)821    this shouldBe gte(x)822    this shouldBeGreaterThanOrEqual x823    this shouldThrowExceptionOnNotGreaterThanOrEqual (x)824  }825  private infix fun Double.shouldThrowExceptionOnNotGreaterThanOrEqual(x: Double) {826    shouldThrowAssertionError("$this should not be >= $x",827                              { this shouldNot beGreaterThanOrEqualTo(x) },828                              { this shouldNotBe gte(x) },829                              { this shouldNotBeGreaterThanOrEqual x })830  }831  private infix fun Double.shouldNotMatchGreaterThanOrEqual(x: Double) {832    this shouldNot beGreaterThanOrEqualTo(x)833    this shouldNotBe gte(x)834    this shouldNotBeGreaterThanOrEqual x835    this shouldThrowExceptionOnGreaterThanOrEqual (x)836  }837  private infix fun Double.shouldThrowExceptionOnGreaterThanOrEqual(x: Double) {838    shouldThrowAssertionError("$this should be >= $x",839                              { this should beGreaterThanOrEqualTo(x) },840                              { this shouldBe gte(x) },841                              { this shouldBeGreaterThanOrEqual x })842  }843  private fun Double.shouldMatchNaN() {844    this should beNaN()845    this.shouldBeNaN()846    this.shouldThrowExceptionOnNotBeNaN()847  }848  private fun Double.shouldThrowExceptionOnNotBeNaN() {849    shouldThrowAssertionError("$this should not be NaN",850                              { this.shouldNotBeNaN() },851                              { this shouldNot beNaN() })852  }853  private fun Double.shouldNotMatchNaN() {854    this shouldNot beNaN()855    this.shouldNotBeNaN()856    this.shouldThrowExceptionOnBeNaN()857  }858  private fun Double.shouldThrowExceptionOnBeNaN() {859    shouldThrowAssertionError("$this should be NaN",860                              { this.shouldBeNaN() },861                              { this should beNaN() })862  }863  private fun Double.shouldMatchPositiveInfinity() {864    this should bePositiveInfinity()865    this.shouldBePositiveInfinity()866    this.shouldThrowExceptionOnNotBePositiveInfinity()867  }868  private fun Double.shouldThrowExceptionOnNotBePositiveInfinity() {869    shouldThrowAssertionError("$this should not be POSITIVE_INFINITY",870                              { this shouldNot bePositiveInfinity() },871                              { this.shouldNotBePositiveInfinity() })872  }873  private fun Double.shouldNotMatchPositiveInfinity() {874    this shouldNot bePositiveInfinity()875    this.shouldNotBePositiveInfinity()...

FixedBigRationalTest.kt

Source:FixedBigRationalTest.kt

...84        }85        @Test86        fun `should not convert non-finite doubles`() {87            shouldThrow<ArithmeticException> {88                valueOf(Double.NaN)89            }90            shouldThrow<ArithmeticException> {91                valueOf(Double.POSITIVE_INFINITY)92            }93            shouldThrow<ArithmeticException> {94                valueOf(Double.NEGATIVE_INFINITY)95            }96        }97        @Test98        fun `should convert float in infix constructor`() {99            (1.0.big over 1.0f) shouldBe ONE100            (1.big over 1.0f) shouldBe ONE101            (1L over 1.0f) shouldBe ONE102            (1 over 1.0f) shouldBe ONE103            (1.0 over 1.0f) shouldBe ONE104            (1.0f over 1.0f) shouldBe ONE105            (1.0f over 1.big) shouldBe ONE106            (1.0f over 1L) shouldBe ONE107            (1.0f over 1) shouldBe ONE108        }109        @Test110        fun `should convert integral types in infix constructor`() {111            (1L over 1) shouldBe ONE112            (1 over 1L) shouldBe ONE113        }114        @Test115        fun `should convert to and from big decimal`() {116            val decimals = listOf(117                -4.0,118                -3.0,119                -2.0,120                -1.0,121                -0.5,122                -0.3,123                -0.1,124                0.0,125                0.1,126                0.3,127                0.5,128                1.0,129                2.0,130                3.0,131                4.0,132                123.456133            ).map { it.toBigDecimal() }134            val rationals = listOf(135                -4 over 1,136                -3 over 1,137                -2 over 1,138                -1 over 1,139                -1 over 2,140                -3 over 10,141                -1 over 10,142                ZERO,143                1 over 10,144                3 over 10,145                1 over 2,146                ONE,147                2 over 1,148                3 over 1,149                4 over 1,150                15432 over 125151            )152            decimals.map {153                it.toBigRational()154            } shouldBe rationals155            rationals.map {156                it.toBigDecimal()157            } shouldBe decimals158        }159        @Test160        fun `should convert to and from double`() {161            val doubles = listOf(162                -4.0,163                -3.0,164                -2.0,165                -1.0,166                -0.5,167                -0.3,168                -0.1,169                0.0,170                0.1,171                0.3,172                0.5,173                1.0,174                2.0,175                3.0,176                4.0,177                123.456178            )179            val rationals = listOf(180                -4 over 1,181                -3 over 1,182                -2 over 1,183                -1 over 1,184                -1 over 2,185                -3 over 10,186                -1 over 10,187                ZERO,188                1 over 10,189                3 over 10,190                1 over 2,191                ONE,192                2 over 1,193                3 over 1,194                4 over 1,195                15432 over 125196            )197            doubles.map {198                it.toBigRational()199            } shouldBe rationals200            rationals.map {201                it.toDouble()202            } shouldBe doubles203        }204        @Test205        fun `should convert to and from float`() {206            val floats = listOf(207                -4.0f,208                -3.0f,209                -2.0f,210                -1.0f,211                -0.5f,212                -0.3f,213                -0.1f,214                0.0f,215                0.1f,216                0.3f,217                0.5f,218                1.0f,219                2.0f,220                3.0f,221                4.0f,222                123.456f223            )224            val rationals = listOf(225                -4 over 1,226                -3 over 1,227                -2 over 1,228                -1 over 1,229                -1 over 2,230                -3 over 10,231                -1 over 10,232                ZERO,233                1 over 10,234                3 over 10,235                1 over 2,236                ONE,237                2 over 1,238                3 over 1,239                4 over 1,240                15432 over 125241            )242            floats.map {243                it.toBigRational()244            } shouldBe rationals245            rationals.map {246                it.toFloat()247            } shouldBe floats248        }249        @Test250        fun `should convert to floating equivalent`() {251            ONE.toFloatingBigRational() shouldBe FloatingBigRational.ONE252        }253    }254    @Nested255    inner class FunctionTests {256        @Test257        fun `should compare other number types`() {258            shouldThrow<ArithmeticException> {259                Double.POSITIVE_INFINITY > ZERO260            }261            shouldThrow<ArithmeticException> {262                ZERO < Double.POSITIVE_INFINITY263            }264            shouldThrow<ArithmeticException> {265                ZERO > Double.NEGATIVE_INFINITY266            }267            shouldThrow<ArithmeticException> {268                Double.NEGATIVE_INFINITY < ZERO269            }270            shouldThrow<ArithmeticException> {271                Float.NaN > ZERO272            }273            shouldThrow<ArithmeticException> {274                ZERO < Float.NaN275            }276        }277        @Test278        fun `should multiplicatively invert`() {279            shouldThrow<ArithmeticException> {280                ZERO.unaryDiv()281            }282        }283    }284}...

TestMapping.kt

Source:TestMapping.kt

...10class TestMapping {11    @Test12    fun shouldDoMappingOperations() {13        describe("Mapping Double from zero-width before domain to non-zero-width after domain") {14            it("should not produce NaN results") {15                map(0.0, 0.0, 0.0, 1.0, 0.0) shouldBe (0.0 plusOrMinus 10E-6)16                map(0.0, 0.0, 0.0, 1.0, 1.0) shouldBe (1.0 plusOrMinus 10E-6)17            }18        }19        describe("Mapping Double from zero-width before domain to zero-width after domain") {20            it("should not produce NaN results") {21                map(0.0, 0.0, 0.0, 0.0, 0.0) shouldBe (0.0 plusOrMinus 10E-6)22                map(0.0, 0.0, 0.0, 0.0, 1.0) shouldBe (0.0 plusOrMinus 10E-6)23            }24        }25        describe("Mapping Double") {26            val beforeLeft = 0.027            val beforeRight = 1.028            val beforeVal = beforeRight * 2.0 // out of range29            val afterLeft = 0.030            val afterRight = beforeRight * 2.031            it("should not clamp") {32                map(33                    beforeLeft, beforeRight, afterLeft, afterRight, beforeVal34                ) shouldNotBe between(afterLeft, afterRight, 0.0)...

DoubleExactlyTest.kt

Source:DoubleExactlyTest.kt

...35            }36         }37      }38      "For non-numeric doubles" - {39         "NaN" - {40            "Should not be exactly" - {41               "Any number" {42                  checkAll(100, numericDoubles) {43                     Double.NaN shouldNotMatchExactly it44                  }45               }46               "NaN" {47                  Double.NaN shouldNotMatchExactly Double.NaN48               }49               "The infinities" {50                  Double.Companion.NaN shouldNotMatchExactly Double.Companion.POSITIVE_INFINITY51                  Double.Companion.NaN shouldNotMatchExactly Double.Companion.NEGATIVE_INFINITY52               }53            }54         }55         "Positive Infinity" - {56            "Should be exactly" - {57               "Itself" {58                  Double.Companion.POSITIVE_INFINITY shouldExactlyMatch Double.Companion.POSITIVE_INFINITY59               }60            }61            "Should not be exactly" - {62               "Any numeric double" {63                  checkAll(100, numericDoubles) {64                     Double.POSITIVE_INFINITY shouldNotMatchExactly it65                  }66               }67               "Any other non-numeric double" {68                  Double.Companion.POSITIVE_INFINITY shouldNotMatchExactly Double.Companion.NEGATIVE_INFINITY69                  Double.Companion.POSITIVE_INFINITY shouldNotMatchExactly Double.Companion.NaN70               }71            }72         }73         "Negative Infinity" - {74            "Should be exactly" - {75               "Itself" {76                  Double.Companion.NEGATIVE_INFINITY shouldExactlyMatch Double.Companion.NEGATIVE_INFINITY77               }78            }79            "Should not be exactly" - {80               "Any numeric double" {81                  checkAll(100, numericDoubles) {82                     Double.NEGATIVE_INFINITY shouldNotMatchExactly it83                  }84               }85               "Any other non-numeric double" {86                  Double.Companion.NEGATIVE_INFINITY shouldNotMatchExactly Double.Companion.POSITIVE_INFINITY87                  Double.Companion.NEGATIVE_INFINITY shouldNotMatchExactly Double.Companion.NaN88               }89            }90         }91      }92   }93   private infix fun Double.shouldExactlyMatch(other: Double) {94      this shouldBeExactly other95      this shouldBe exactly(other)96      this shouldThrowExceptionOnNotExactly other97   }98   private infix fun Double.shouldNotMatchExactly(other: Double) {99      this shouldNotBe exactly(other)100      this shouldNotBeExactly other101      this shouldThrowExceptionOnExactly other...

Tolerance.kt

Source:Tolerance.kt

...18class ToleranceMatcher(private val expected: Double?, private val tolerance: Double) : Matcher<Double?> {19  override fun test(value: Double?): MatcherResult {20    return if(value == null || expected == null) {21      MatcherResult(value == expected, "$value should be equal to $expected", "$value should not be equal to $expected")22    } else if (expected.isNaN() && value.isNaN()) {23       println("[WARN] By design, Double.Nan != Double.Nan; see https://stackoverflow.com/questions/8819738/why-does-double-nan-double-nan-return-false/8819776#8819776")24       MatcherResult(25          false,26          "By design, Double.Nan != Double.Nan; see https://stackoverflow.com/questions/8819738/why-does-double-nan-double-nan-return-false/8819776#8819776",27          "By design, Double.Nan != Double.Nan; see https://stackoverflow.com/questions/8819738/why-does-double-nan-double-nan-return-false/8819776#8819776"28       )29    } else {30       if (tolerance == 0.0)31          println("[WARN] When comparing doubles consider using tolerance, eg: a shouldBe (b plusOrMinus c)")32       val diff = abs(value - expected)33       val passed = diff <= tolerance34       val low = expected - tolerance35       val high = expected + tolerance36       val msg = when (tolerance) {...

FloatNaNTest.kt

Source:FloatNaNTest.kt

1package com.sksamuel.kotest.matchers.floats2import com.sksamuel.kotest.matchers.doubles.numericFloats3import io.kotest.assertions.throwables.shouldThrow4import io.kotest.core.spec.style.FunSpec5import io.kotest.matchers.floats.beNaN6import io.kotest.matchers.floats.shouldBeNaN7import io.kotest.matchers.floats.shouldNotBeNaN8import io.kotest.matchers.should9import io.kotest.matchers.shouldBe10import io.kotest.matchers.shouldNot11import io.kotest.property.checkAll12class FloatNaNTest : FunSpec() {13   init {14      context("NaN matcher") {15         test("Every numeric float should not be NaN") {16            checkAll(100, numericFloats) {17               it.shouldNotMatchNaN()18            }19         }20         test("The non-numeric floats") {21            Float.NaN.shouldMatchNaN()22            Float.POSITIVE_INFINITY.shouldNotMatchNaN()23            Float.NEGATIVE_INFINITY.shouldNotMatchNaN()24         }25      }26   }27   private fun Float.shouldMatchNaN() {28      this should beNaN()29      this.shouldBeNaN()30      this.shouldThrowExceptionOnNotBeNaN()31   }32   private fun Float.shouldNotMatchNaN() {33      this shouldNot beNaN()34      this.shouldNotBeNaN()35      this.shouldThrowExceptionOnBeNaN()36   }37   private fun Float.shouldThrowExceptionOnNotBeNaN() {38      shouldThrowAssertionError("$this should not be NaN",39         { this.shouldNotBeNaN() },40         { this shouldNot beNaN() })41   }42   private fun Float.shouldThrowExceptionOnBeNaN() {43      shouldThrowAssertionError("$this should be NaN",44         { this.shouldBeNaN() },45         { this should beNaN() })46   }47   private fun shouldThrowAssertionError(message: String, vararg expression: () -> Any?) {48      expression.forEach {49         val exception = shouldThrow<AssertionError>(it)50         exception.message shouldBe message51      }52   }53}...

NaN.kt

Source:NaN.kt

...3import io.kotest.matchers.MatcherResult4import io.kotest.matchers.should5import io.kotest.matchers.shouldNot6/**7 * Asserts that this [Double] is [Double.NaN]8 *9 * Verifies that this [Double] is the Not-a-Number constant [Double.NaN]10 *11 * Opposite of [shouldNotBeNaN]12 *13 * ```14 * Double.NaN.shouldBeNaN()   // Assertion passes15 * 1.0.shouldBeNaN()          // Assertion fails16 * ```17 * @see [beNaN]18 */19fun Double.shouldBeNaN() = this should beNaN()20/**21 * Assert that this [Double] is not [Double.NaN]22 *23 * Verifies that this [Double] is NOT the Not-a-Number constant [Double.NaN]24 *25 * Opposite of [shouldBeNaN]26 *27 * ```28 * 1.0.shouldNotBeNaN()         // Assertion passes29 * Double.NaN.shouldNotBeNaN()  // Assertion fails30 * ```31 * @see [beNaN]32 */33fun Double.shouldNotBeNaN() = this shouldNot beNaN()34/**35 * Matcher that matches [Double.NaN]36 *37 * Verifies that a specific [Double] is the Not-a-Number constant [Double.NaN]38 *39 * ```40 *  0.5 should beNaN()            // Assertion fails41 *  Double.NaN should beNaN()     // Assertion passes42 * ```43 *44 * @see [Double.shouldBeNaN]45 * @see [Double.shouldNotBeNaN]46 */47fun beNaN() = object : Matcher<Double> {48  override fun test(value: Double) = MatcherResult(49    value.isNaN(),50    "$value should be NaN",51    "$value should not be NaN"52  )53}...

arbs.kt

Source:arbs.kt

2import io.kotest.property.Arb3import io.kotest.property.arbitrary.double4import io.kotest.property.arbitrary.filterNot5import io.kotest.property.arbitrary.float6val nonNumericDoubles = listOf(Double.NaN, Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY)7val numericDoubles = Arb.double().filterNot { it in nonNumericDoubles }8val nonMinNorMaxValueDoubles = numericDoubles.filterNot { it in listOf(Double.MAX_VALUE, Double.MIN_VALUE) }9val nonNumericFloats = listOf(Float.NaN, Float.POSITIVE_INFINITY, Float.NEGATIVE_INFINITY)10val numericFloats = Arb.float().filterNot { it in nonNumericFloats }...

NaN

Using AI Code Generation

1@JvmName ( "shouldNotBeNaN" ) infix fun Double . shouldNotBeNaN () = this . shouldNotBeNaN ( )2@JvmName ( "shouldNotBeNaN" ) infix fun Double . shouldNotBeNaN ( message : String ? = null ) = this . shouldNotBeNaN ( message )3@JvmName ( "shouldBeNaN" ) infix fun Double . shouldBeNaN () = this . shouldBeNaN ( )4@JvmName ( "shouldBeNaN" ) infix fun Double . shouldBeNaN ( message : String ? = null ) = this . shouldBeNaN ( message )5@Suppress ( "NOTHING_TO_INLINE" ) inline fun Double . shouldBeNaN ( message : String ? = null ) = this . shouldBe ( NaN , message )6@Suppress ( "NOTHING_TO_INLINE" ) inline fun Double . shouldNotBeNaN ( message : String ? = null ) = this . shouldNotBe ( NaN , message )7@JvmName ( "shouldNotBeNaN" ) infix fun Float . shouldNotBeNaN () = this . shouldNotBeNaN ( )8@JvmName ( "shouldNotBeNaN" ) infix fun Float . shouldNotBeNaN ( message : String ? = null ) = this . shouldNotBeNaN ( message )9@JvmName ( "shouldBeNaN" ) infix fun Float . shouldBeNaN () = this . shouldBeNaN ( )10@JvmName ( "shouldBeNaN" ) infix fun Float . shouldBeNaN ( message : String ? = null ) = this . shouldBeNaN ( message )11@Suppress ( "NOTHING_TO_INLINE" ) inline fun Float . shouldBeNaN ( message : String ? = null ) = this . shouldBe ( NaN , message )12@Suppress ( "NOTHING_TO_INLINE" ) inline fun Float . shouldNotBeNaN ( message : String ? = null ) = this . shouldNotBe ( NaN , message )13@JvmName ( "shouldNotBeNaN" ) infix fun Double . shouldNotBeNaN () = this . shouldNotBeNaN ( )14@JvmName ( "shouldNotBeNaN" ) infix fun Double . shouldNotBeNaN ( message : String ? = null ) = this . shouldNotBeNaN ( message )15@JvmName ( "shouldBeNaN" ) infix fun Double . shouldBeNaN () = this . shouldBeNaN ( )16@JvmName ( "shouldBeNaN" ) infix fun Double . shouldBeNaN ( message : String ? = null ) = this . shouldBeNaN (

NaN

Using AI Code Generation

1result.shouldBeNaN()2result.shouldNotBeNaN()3result.shouldBeNaN()4result.shouldNotBeNaN()5result.shouldBeNaN()6result.shouldNotBeNaN()7val result = BigDecimal("0.0") / BigDecimal("0.0")8result.shouldBeNaN()9result.shouldNotBeNaN()10val result = BigInteger("0") / BigInteger("0")11result.shouldBeNaN()12result.shouldNotBeNaN()13val result = BigDecimal("0.0") / BigDecimal("0.0")14result.shouldBeNaN()15result.shouldNotBeNaN()16val result = BigInteger("0") / BigInteger("0")17result.shouldBeNaN()18result.shouldNotBeNaN()19val result = BigDecimal("0.0") / BigDecimal("0.0")20result.shouldBeNaN()21result.shouldNotBeNaN()22val result = BigInteger("0") / BigInteger("0")23result.shouldBeNaN()24result.shouldNotBeNaN()25val result = BigDecimal("0.0") / BigDecimal("0.0")26result.shouldBeNaN()27result.shouldNotBeNaN()28val result = BigInteger("0") / BigInteger("0")29result.shouldBeNaN()30result.shouldNotBeNaN()

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