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

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

FixedBigRationalTest.kt

Source:FixedBigRationalTest.kt

1package hm.binkley.math.fixed2import hm.binkley.math.BFixed3import hm.binkley.math.BFloating4import hm.binkley.math.big5import hm.binkley.math.compareTo6import hm.binkley.math.fixed.FixedBigRational.Companion.ONE7import hm.binkley.math.fixed.FixedBigRational.Companion.TEN8import hm.binkley.math.fixed.FixedBigRational.Companion.ZERO9import hm.binkley.math.fixed.FixedBigRational.Companion.valueOf10import hm.binkley.math.floating.FloatingBigRational11import hm.binkley.math.rangeTo12import io.kotest.assertions.throwables.shouldThrow13import io.kotest.matchers.booleans.shouldBeFalse14import io.kotest.matchers.shouldBe15import io.kotest.matchers.shouldNotBe16import org.junit.jupiter.api.Nested17import org.junit.jupiter.api.Test18/**19 * NB -- the tests use a mixture of constructors while testing functionality.20 * This is intentional, and raises coverage.21 */22@Suppress("RedundantInnerClassModifier")23internal class FixedBigRationalTest {24    @Test25    fun `should not divide by 0 when constructing`() {26        shouldThrow<ArithmeticException> {27            (1 over 0)28        }29    }30    @Nested31    inner class ProgressionTests {32        @Test33        fun `should equate`() {34            (ONE..TEN).equals(this).shouldBeFalse()35            (ONE..TEN) shouldNotBe36                FloatingBigRational.ONE..FloatingBigRational.TEN37            (ONE..TEN).hashCode() shouldNotBe38                (FloatingBigRational.ONE..FloatingBigRational.TEN).hashCode()39        }40    }41    @Nested42    inner class ConversionTests {43        @Test44        fun `should convert BigDecimal in infix constructor`() {45            0.0.big.toBigRational() shouldBe ZERO46            30.0.big.toBigRational() shouldBe (30 over 1)47            3.0.big.toBigRational() shouldBe (3 over 1)48            BFloating("0.3").toBigRational() shouldBe (3 over 10)49            BFloating("7.70").toBigRational() shouldBe (77 over 10)50            (1.0.big over 1.0.big) shouldBe ONE51            (1.big over 1.0.big) shouldBe ONE52            (1L over 1.0.big) shouldBe ONE53            (1 over 1.0.big) shouldBe ONE54            (1.0 over 1.0.big) shouldBe ONE55            (1.0f over 1.0.big) shouldBe ONE56            (1.0.big over 1L) shouldBe ONE57            (1.0.big over 1) shouldBe ONE58        }59        @Test60        fun `should convert BigInteger in infix constructor`() {61            0.big.toBigRational() shouldBe ZERO62            BFixed.valueOf(30L).toBigRational() shouldBe (30 over 1)63            3.big.toBigRational() shouldBe (3 over 1)64            (1.big over 1.big) shouldBe ONE65            (1.0.big over 1.big) shouldBe ONE66            (1L over 1.big) shouldBe ONE67            (1 over 1.big) shouldBe ONE68            (1.0 over 1.big) shouldBe ONE69            (1.0f over 1.big) shouldBe ONE70            (1.big over 1L) shouldBe ONE71            (1.big over 1) shouldBe ONE72        }73        @Test74        fun `should convert double in infix constructor`() {75            (1.0.big over 1.0) shouldBe ONE76            (1.big over 1.0) shouldBe ONE77            (1L over 1.0) shouldBe ONE78            (1 over 1.0) shouldBe ONE79            (1.0 over 1.0) shouldBe ONE80            (1.0f over 1.0) shouldBe ONE81            (1.0 over 1.big) shouldBe ONE82            (1.0 over 1L) shouldBe ONE83            (1.0 over 1) shouldBe ONE84        }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}...

FrequencyIntervalTest.kt

Source:FrequencyIntervalTest.kt

1package net.paploo.kmusical.core2import io.kotest.assertions.throwables.shouldThrowAny3import io.kotest.core.spec.style.DescribeSpec4import io.kotest.matchers.doubles.ToleranceMatcher5import io.kotest.matchers.doubles.plusOrMinus6import io.kotest.matchers.should7import io.kotest.matchers.shouldBe8import io.kotest.matchers.types.beInstanceOf9import io.kotest.property.Arb10import io.kotest.property.arbitrary.arbitrary11import io.kotest.property.arbitrary.pair12import io.kotest.property.arbitrary.triple13import io.kotest.property.checkAll14import net.paploo.kmusical.testutil.plusOrMinus15import kotlin.math.absoluteValue16class FrequencyRatioTest : DescribeSpec({17    val frequencyRatioGen = arbitrary { rs ->18        FrequencyRatio(rs.random.nextDouble().absoluteValue)19    }20    describe("instantiation") {21        it("should not allow negative values") {22            shouldThrowAny { Frequency(-0.5) }23            shouldThrowAny { Frequency(-2.0) }24        }25        it("should not instantiate with a zero frequency") {26            shouldThrowAny { Frequency(0.0) }27        }28    }29    describe("plus") {30        it("The result should be typed as a frequency ratio") {31            val a = FrequencyRatio(1.5)32            val r: FrequencyRatio = a + a // Won't compile if typed wrong.33            r should beInstanceOf(FrequencyRatio::class)34        }35        it("should be the product of the value in hertz") {36            Arb.pair(frequencyRatioGen, frequencyRatioGen).checkAll { (a, b) ->37                val r = a + b38                r.value shouldBe (a.value * b.value).plusOrMinus()39            }40        }41        describe("it should be monoidal") {42            it("should be associative") {43                Arb.triple(frequencyRatioGen, frequencyRatioGen, frequencyRatioGen).checkAll { (a, b, c) ->44                    val left = (a + b) + c45                    val right = a + (b + c)46                    left.value shouldBe (right.value.plusOrMinus())47                }48            }49            it("should have left identity") {50                frequencyRatioGen.checkAll {51                    it + FrequencyRatio.unison shouldBe it52                }53            }54            it("should have right identity") {55                frequencyRatioGen.checkAll {56                    FrequencyRatio.unison + it shouldBe it57                }58            }59        }60    }61    describe("minus") {62        it("The result should be typed as a frequency ratio") {63            val a = FrequencyRatio(1.5)64            val r: FrequencyRatio = a - a // Won't compile if typed wrong.65            r should beInstanceOf(FrequencyRatio::class)66        }67        it("should be the div of the value in hertz") {68            Arb.pair(frequencyRatioGen, frequencyRatioGen).checkAll { (a,b) ->69                val r = a - b70                r.value shouldBe (a.value / b.value).plusOrMinus()71            }72        }73    }74    describe("unaryMinus") {75        it("should be the additive inverse") {76            frequencyRatioGen.checkAll {77                (it + (-it)).value shouldBe ((FrequencyRatio.unison).value.plusOrMinus())78            }79        }80    }81    describe("toCents") {82        it("should convert unison constant") {83            FrequencyRatio.unison.toCents() shouldBe Cent.unison84        }85        it("should convert octave constant") {86            FrequencyRatio.octave.toCents() shouldBe Cent.octave87        }88        it("should convert a just fifth to the nearest whole cent value") {89            FrequencyRatio(3.0 / 2.0).toCents() shouldBe Cent(702)90        }91        it("should convert a value down by one fourth to the nearest whole cent value") {92            FrequencyRatio(3.0/4.0).toCents() shouldBe Cent(-498)93        }94    }95    describe("toFrequencyRatio") {96        it("should return the same value") {97            frequencyRatioGen.checkAll {98                it.toFrequencyRatio() shouldBe it99            }100        }101    }102})103class CentTest : DescribeSpec({104    val centGen = arbitrary { rs ->105        Cent(rs.random.nextInt(-12000,12000).absoluteValue)106    }107    describe("plus") {108        it("The result should be typed as a cent") {109            val a = Cent(702)110            val r: Cent = a + a // Won't compile if typed wrong.111            r should beInstanceOf(Cent::class)112        }113        it("should be the sum of the raw value") {114            Arb.pair(centGen, centGen).checkAll { (a,b) ->115                val r = a + b116                r.value shouldBe a.value + b.value117            }118        }119        describe("it should be monoidal") {120            it("should be associative") {121                Arb.triple(centGen, centGen, centGen).checkAll { (a, b, c) ->122                    val left = (a + b) + c123                    val right = a + (b + c)124                    left shouldBe right125                }126            }127            it("should have left identity") {128                centGen.checkAll {129                    it + Cent.unison shouldBe it130                }131            }132            it("should have right identity") {133                centGen.checkAll {134                    Cent.unison + it shouldBe it135                }136            }137        }138    }139    describe("minus") {140        it("The result should be typed as a cent") {141            val a = Cent(702)142            val r: Cent = a - a // Won't compile if typed wrong.143            r should beInstanceOf(Cent::class)144        }145        it("should be the difference of the raw value") {146            Arb.pair(centGen, centGen).checkAll { (a,b) ->147                val r = a - b148                r.value shouldBe (a.value - b.value)149            }150        }151    }152    describe("unaryMinus") {153        it("should be the additive inverse") {154            centGen.checkAll {155                (it + (-it)) shouldBe Cent.unison156            }157        }158    }159    describe("toCents") {160        it("should return the same value") {161            centGen.checkAll {162                it.toCents() shouldBe it163            }164        }165    }166    describe("toFrequencyRatio") {167        it("should convert unison constant") {168            Cent.unison.toFrequencyRatio() shouldBe FrequencyRatio.unison169        }170        it("should convert octave constant") {171            Cent.octave.toFrequencyRatio() shouldBe FrequencyRatio.octave172        }173        //This is not very tight, since we only keep precision to one cent for cents.174        val tolerance = 1e-4175        it("should convert a just fifth (within rounding error)") {176            val converted = Cent(702).toFrequencyRatio()177            val expected = FrequencyRatio(1.5)178            converted.value shouldBe expected.value.plusOrMinus(tolerance)179        }180        it("should convert a value down by one fourth (within rounding error)") {181            val converted = Cent(-498).toFrequencyRatio()182            val expected = FrequencyRatio(3.0/4.0)183            converted.value shouldBe expected.value.plusOrMinus(tolerance)184        }185    }186})...

IntersectionSpec.kt

Source:IntersectionSpec.kt

1package test.model2import io.kotest.core.spec.style.FunSpec3import io.kotest.data.forAll4import io.kotest.data.headers5import io.kotest.data.row6import io.kotest.data.table7import io.kotest.matchers.booleans.shouldBeFalse8import io.kotest.matchers.booleans.shouldBeTrue9import io.kotest.matchers.doubles.shouldBeGreaterThan10import io.kotest.matchers.doubles.shouldBeLessThan11import io.kotest.matchers.shouldBe12import krater.geometry.*13import krater.model.*14import krater.model.shapes.Plane15import krater.model.shapes.Sphere16import krater.model.shapes.Triangle17import kotlin.math.sqrt18class IntersectionSpec : FunSpec({19    val root2by2 = sqrt(2.0) / 2.020    val glassSphere = Sphere(material = Material(transparency = 1.0, refractiveIndex = 1.5))21    test("An intersection encapsulates t and object") {22        val s = Sphere()23        val i = Intersection(3.5, s)24        i.t.shouldBe(3.5)25        i.shape.shouldBe(s)26    }27    test("The hit when all intersections have positive t") {28        val s = Sphere()29        val i1 = Intersection(1.0, s)30        val i2 = Intersection(2.0, s)31        val xs = listOf(i1, i2)32        val i = xs.hit()33        i.shouldBe(i1)34    }35    test("The hit when some intersections have negative t") {36        val s = Sphere()37        val i1 = Intersection(-1.0, s)38        val i2 = Intersection(1.0, s)39        val xs = listOf(i1, i2)40        val i = xs.hit()41        i.shouldBe(i2)42    }43    test("The hit when all intersections have negative t") {44        val s = Sphere()45        val i1 = Intersection(-2.0, s)46        val i2 = Intersection(-1.0, s)47        val xs = listOf(i1, i2)48        val i = xs.hit()49        i.shouldBe(NO_INTERSECTION)50    }51    test("The hit is always the lowest non-negative intersection") {52        val s = Sphere()53        val i1 = Intersection(5.0, s)54        val i2 = Intersection(7.0, s)55        val i3 = Intersection(-3.0, s)56        val i4 = Intersection(2.0, s)57        val xs = listOf(i1, i2, i3, i4)58        val i = xs.hit()59        i.shouldBe(i4)60    }61    test("Pre-computing the state of an intersection") {62        val r = Ray(point(0, 0, -5), vector(0, 0, 1))63        val shape = Sphere()64        val i = Intersection(4.0, shape)65        val comps = PreparedComputation(i, r)66        comps.intersection.shouldBe(i)67        comps.point.shouldBe(point(0, 0, -1))68        comps.eyev.shouldBe(vector(0, 0, -1))69        comps.normalv.shouldBe(vector(0, 0, -1))70    }71    test("The hit, when an intersection occurs on the outside") {72        val r = Ray(point(0, 0, -5), vector(0, 0, 1))73        val shape = Sphere()74        val i = Intersection(4.0, shape)75        val comps = PreparedComputation(i, r)76        comps.inside.shouldBeFalse()77    }78    test("The hit, when an intersection occurs on the inside") {79        val r = Ray(point(0, 0, 0), vector(0, 0, 1))80        val shape = Sphere()81        val i = Intersection(1.0, shape)82        val comps = PreparedComputation(i, r)83        comps.point.shouldBe(point(0, 0, 1))84        comps.eyev.shouldBe(vector(0, 0, -1))85        comps.inside.shouldBeTrue()86        comps.normalv.shouldBe(vector(0, 0, -1))87    }88    test("Recomputing the reflection vector") {89        val shape = Plane()90        val r = Ray(point(0, 1, -1), vector(0, -root2by2, root2by2))91        val i = Intersection(sqrt(2.0), shape)92        val comps = PreparedComputation(i, r)93        comps.reflectv.shouldBe(vector(0, root2by2, root2by2))94    }95    test("Finding n1 and n2 at various intersections") {96        table(97            headers("index", "n1", "n2"),98            row(0, 1.0, 1.5),99            row(1, 1.5, 2.0),100            row(2, 2.0, 2.5),101            row(3, 2.5, 2.5),102            row(4, 2.5, 1.5),103            row(5, 1.5, 1.0),104        ).forAll { index, n1, n2 ->105            val a = Sphere(106                material = Material(transparency = 1.0, refractiveIndex = 1.5),107                transform = scaling(2, 2, 2)108            )109            val b = Sphere(110                material = Material(transparency = 1.0, refractiveIndex = 2.0),111                transform = translation(0, 0, -0.25)112            )113            val c = Sphere(114                material = Material(transparency = 1.0, refractiveIndex = 2.5),115                transform = translation(0, 0, 0.25)116            )117            val r = Ray(point(0, 0, -4), vector(0, 0, 1))118            val xs = listOf(119                Intersection(2.0, a),120                Intersection(2.75, b),121                Intersection(3.25, c),122                Intersection(4.75, b),123                Intersection(5.25, c),124                Intersection(6.0, a),125            )126            val comps = PreparedComputation(xs[index], r, xs)127            comps.n1.shouldBe(n1)128            comps.n2.shouldBe(n2)129        }130    }131    test("The under point is offset below the surface") {132        val r = Ray(point(0, 0, -5), vector(0, 0, 1))133        val shape = Sphere(material = Material(transparency = 1.0, refractiveIndex = 1.5), transform = translation(0, 0, 1))134        val i = Intersection(5.0, shape)135        val xs = listOf(i)136        val comps = PreparedComputation(i, r, xs)137        comps.underPoint.z.shouldBeGreaterThan(EPSILON / 2)138        comps.point.z.shouldBeLessThan(comps.underPoint.z)139    }140    test("The Schlick approximation under total internal reflection") {141        val shape = glassSphere142        val r = Ray(point(0, 0, root2by2), vector(0, 1, 0))143        val xs = listOf(Intersection(-root2by2, shape), Intersection(root2by2, shape))144        val comps = PreparedComputation(xs[1], r, xs)145        comps.schlickReflectance.shouldBe(1.0)146    }147    test("The Schlick approximation with a perpendicular viewing angle") {148        val shape = glassSphere149        val r = Ray(point(0, 0, 0), vector(0, 1, 0))150        val xs = listOf(Intersection(-1.0, shape), Intersection(1.0, shape))151        val comps = PreparedComputation(xs[1], r, xs)152        comps.schlickReflectance.near(0.04)shouldBe(true)153    }154    test("The Schlick approximation with small angle and n2 > n1") {155        val shape = glassSphere156        val r = Ray(point(0, 0.99, -2), vector(0, 0, 1))157        val xs = listOf(Intersection(1.8589, shape))158        val comps = PreparedComputation(xs[0], r, xs)159        comps.schlickReflectance.near(0.48873).shouldBe(true)160    }161    test("An intersection can encapsulate u and v") {162        val s = Triangle(point(0, 1, 0), point(-1, 0, 0), point(1, 0, 0))163        val i = Intersection(3.5, s, u = 0.2, v = 0.4)164        i.u.shouldBe(0.2)165        i.v.shouldBe(0.4)166    }167})...

DoublesSpec.kt

Source:DoublesSpec.kt

...3import io.kotest.matchers.should4import io.monkeypatch.kaval.core.validator.Doubles.inRange5import io.monkeypatch.kaval.core.validator.Doubles.negative6import io.monkeypatch.kaval.core.validator.Doubles.positive7import io.monkeypatch.kaval.core.validator.Doubles.strictlyNegative8import io.monkeypatch.kaval.core.validator.Doubles.strictlyPositive9import io.monkeypatch.kaval.kotlintest.beInvalidWithReason10import io.monkeypatch.kaval.kotlintest.beValid11class DoublesSpec : DescribeSpec() {12    init {13        describe("inRange") {14            val validator = inRange((5.0)..(10.0))15            it("inRange should reject a lower number") {16                val result = validator(0.0)17                result should beInvalidWithReason(18                    "requires to be in range 5.0..10.0, got 0.0"19                )20            }21            it("inRange should reject a higher number") {22                val result = validator(42.0)23                result should beInvalidWithReason(24                    "requires to be in range 5.0..10.0, got 42.0"25                )26            }27            it("inRange should accept value lower bound") {28                val result = validator(5.0)29                result should beValid()30            }31            it("inRange should accept in range") {32                val result = validator(10.0)33                result should beValid()34            }35            it("inRange should accept value upper bound") {36                val result = validator(7.0)37                result should beValid()38            }39        }40        describe("strictlyPositive") {41            val validator = strictlyPositive42            it("strictlyPositive should reject a negative number") {43                val result = validator(-1.0)44                result should beInvalidWithReason(45                    "requires to be strictly positive"46                )47            }48            it("strictlyPositive should reject zero") {49                val result = validator(0.0)50                result should beInvalidWithReason(51                    "requires to be strictly positive"52                )53            }54            it("strictlyPositive should accept a positive number") {55                val result = validator(5.0)56                result should beValid()57            }58        }59        describe("positive") {60            val validator = positive61            it("positive should reject a negative number") {62                val result = validator(-1.0)63                result should beInvalidWithReason(64                    "requires to be positive"65                )66            }67            it("positive should reject zero") {68                val result = validator(0.0)69                result should beValid()70            }71            it("positive should accept a positive number") {72                val result = validator(5.0)73                result should beValid()74            }75        }76        describe("strictlyNegative") {77            val validator = strictlyNegative78            it("strictlyNegative should reject a positive number") {79                val result = validator(1.0)80                result should beInvalidWithReason(81                    "requires to be strictly negative"82                )83            }84            it("strictlyNegative should reject zero") {85                val result = validator(0.0)86                result should beInvalidWithReason(87                    "requires to be strictly negative"88                )89            }90            it("strictlyNegative should accept a negative number") {91                val result = validator(-5.0)92                result should beValid()93            }94        }95        describe("negative") {96            val validator = negative97            it("negative should reject a postive number") {98                val result = validator(1.0)99                result should beInvalidWithReason(100                    "requires to be negative"101                )102            }103            it("negative should reject zero") {104                val result = validator(0.0)...

BLEDistanceUnscentedKalmanFilterTest.kt

Source:BLEDistanceUnscentedKalmanFilterTest.kt

1package uk.nhs.riskscore.internal2import io.kotest.core.spec.style.StringSpec3import io.kotest.matchers.booleans.shouldBeTrue4import io.kotest.matchers.doubles.shouldBeGreaterThanOrEqual5import io.kotest.matchers.ints.shouldBeExactly6import io.kotest.property.arbitrary.orNull7import io.kotest.property.checkAll8import uk.nhs.riskscore.internal.kotest.bleDistanceUnscentedKalmanFilter9import uk.nhs.riskscore.internal.kotest.nonEmptyList10import uk.nhs.riskscore.internal.kotest.smallNumericDoubles11import uk.nhs.riskscore.internal.kotest.smallPositiveDoubles12internal class BLEDistanceUnscentedKalmanFilterTest : StringSpec({13    "transition function is non-negative" {14        checkAll(15            smallNumericDoubles,16            smallNumericDoubles,17            bleDistanceUnscentedKalmanFilter) { state, noise, filter ->18            val result = filter.transitionFunction(state, noise)19            result shouldBeGreaterThanOrEqual 0.020        }21    }22    "smooth function returns the same number of elements as the input" {23        checkAll(24            100,25            bleDistanceUnscentedKalmanFilter,26            smallPositiveDoubles.orNull(0.1).nonEmptyList(2)27        ) { filter, attenutations ->28            filter.smooth(attenutations).size shouldBeExactly attenutations.size29        }30    }31    "smooth function returns finite results" {32        checkAll(33            100,34            bleDistanceUnscentedKalmanFilter,35            smallPositiveDoubles.orNull(0.1).nonEmptyList(2)36        ) { filter, attenutations ->37            filter.smooth(attenutations).all { (mean, covariance) ->38                mean.isFinite() && covariance.isFinite()39            }.shouldBeTrue()40        }41    }42})...

BmiEnglishUnitsTest.kt

Source:BmiEnglishUnitsTest.kt

1package pl.mprzymus.bmi.bmi_count2import io.kotest.assertions.throwables.shouldThrow3import io.kotest.core.spec.style.FunSpec4import io.kotest.matchers.doubles.plusOrMinus5import io.kotest.matchers.shouldBe6class BmiEnglishUnitsTest : FunSpec({7    val tested = BmiEnglishUnits()8    test("should count BMI properly with good input") {9        tested.countBmi(85.0, 200.0) shouldBe (19.55 plusOrMinus 0.1)10    }11    test("BMI should be 0 when weight is 0") {12        tested.countBmi(180.0, 0.0) shouldBe 0.013    }14    test("should return infinity when height is 0") {15        tested.countBmi(0.0, 70.0) shouldBe Double.POSITIVE_INFINITY16    }17    test("should throw when get negative height") {18        shouldThrow <IllegalArgumentException> { tested.countBmi(-1.0, 10.0) }19    }20})...

BmiMetricTest.kt

Source:BmiMetricTest.kt

1package pl.mprzymus.bmi.bmi_count2import io.kotest.assertions.throwables.shouldThrow3import io.kotest.core.spec.style.FunSpec4import io.kotest.matchers.doubles.plusOrMinus5import io.kotest.matchers.shouldBe6class BmiMetricTest : FunSpec({7    val tested = BmiMetric()8    test("should count BMI properly with good input") {9        tested.countBmi(180.0, 70.0) shouldBe (21.55 plusOrMinus 0.1)10    }11    test("BMI should be 0 when weight is 0") {12        tested.countBmi(180.0, 0.0) shouldBe 0.013    }14    test("should return infinity when height is 0") {15        tested.countBmi(0.0, 70.0) shouldBe Double.POSITIVE_INFINITY16    }17    test("should throw when get negative height") {18        shouldThrow <IllegalArgumentException> { tested.countBmi(-1.0, 10.0) }19    }20})...

SquareTest.kt

Source:SquareTest.kt

1package com.sksamuel.kotest.example.allure2import io.kotest.core.spec.style.FunSpec3import io.kotest.matchers.doubles.shouldBeExactly4import kotlin.math.pow5class SquareTest : FunSpec({6   test("positive square") {7      2.0.pow(2.0) shouldBeExactly 4.08      4.0.pow(2.0) shouldBeExactly 16.09      9.0.pow(2.0) shouldBeExactly 81.010   }11   test("negative square") {12      (-2.0).pow(2.0) shouldBeExactly 4.013      (-4.0).pow(2.0) shouldBeExactly 16.014      (-9.0).pow(2.0) shouldBeExactly 81.015   }16})...

Negative

Using AI Code Generation

1    import io.kotest.matchers.doubles.*2    import io.kotest.matchers.floats.*3    import io.kotest.matchers.ints.*4    import io.kotest.matchers.longs.*5    import io.kotest.matchers.shorts.*6    import io.kotest.matchers.strings.*7    import io.kotest.matchers.types.*8    import io.kotest.matchers.uuids.*9You can also import all the matchers in one go:10    import io.kotest.matchers.*11    import io.kotest.matchers.ints.*12    import io.kotest.matchers.longs.*13    import io.kotest.matchers.shorts.*14    import io.kotest.matchers.floats.*15    import io.kotest.matchers.doubles.*16    import io.kotest.matchers.booleans.*17    import io.kot

Negative

Using AI Code Generation

1    import io.kotest.matchers.doubles.*2    import io.kotest.matchers.ints.*3    import io.kotest.matchers.longs.*4    import io.kotest.matchers.shorts.*5    import io.kotest.matchers.strings.*6    import io.kotest.matchers.throwable.*7    import io.kotest.matchers.types.*8    import io.kotest.matchers.uri.*9    import io.kotest.matchers.version.*10    import io.kotest.matchers.xml.*11    import io.kotest.matchers.collections.*12    import io.kotest.matchers.comparables.*13    import io.kotest.matchers.doubles.*14    import io.kotest.matchers.ints.*15    import io.kotest.matchers.longs.*16    import io.kotest.matchers.shorts.*17    import io.kotest.matchers.strings.*18    import io.kotest.matchers.throwable.*

Negative

Using AI Code Generation

1    import io.kotest.matchers.doubles.*2    import io.kotest.matchers.doubles.*3    import io.kotest.matchers.doubles.*4    import io.kotest.matchers.doubles.*5    import io.kotest.matchers.doubles.*6    import io.kotest.matchers.doubles.*7    import io.kotest.matchers.doubles.*

Negative

Using AI Code Generation

1+should("be negative") {2+    -0.1 shouldBe negative()3+}4+should("be positive") {5+    0.1 shouldBe positive()6+}7+should("be zero") {8+    0.0 shouldBe zero()9+}10+should("be close to") {11+    0.1 shouldBe closeTo(0.11, 0.01)12+    0.1 shouldBe closeTo(0.11, 0.01)13+}14+should("be greater than") {15+    0.1 shouldBe greater(0.01)16+    0.1 shouldBe greater(0.01)17+}18+should("be greater than or equal") {19+    0.1 shouldBe greaterOrEqual(0.1)20+    0.1 shouldBe greaterOrEqual(0.1)21+}22+should("be less than") {23+    0.1 shouldBe less(0.2)24+    0.1 shouldBe less(0.2)25+}26+should("be less than or equal") {27+    0.1 shouldBe lessOrEqual(0.1)28+    0.1 shouldBe lessOrEqual(0.1)29+}30+should("be in range") {31+    0.1 shouldBe inRange(0.0..1.0)32+    0.1 shouldBe inRange(0.0..1.0)33+}

Negative

Using AI Code Generation

1import io.kotest.matchers.doubles.*2import io.kotest.matchers.doubles.*3import io.kotest.matchers.doubles.*4import io.kotest.matchers.doubles.*5import io.kotest.matchers.doubles.*6import io.kotest.matchers.doubles.*7import io.kotest.matchers.doubles.*8import io.kotest.matchers.doubles.*9import io.kotest.matchers.doubles.*

Negative

Using AI Code Generation

1+import io.kotest.matchers.doubles.*2 class SimpleTest {3@@ -17,8 +18,8 @@ class SimpleTest {4         val collection = listOf(1, 2, 3)5         collection.shouldContain(1)6-        collection.shouldHaveSize(3)7-        collection.shouldBeEmpty()8+        collection.shouldHaveSize(4)9+        collection.shouldBeEmpty()10     }11-import io.kotest.matchers.shouldBe12+import io.kotest.matchers.doubles.*13 import org.junit.jupiter.api.Test14 class CalculatorTest {15@@ -7,7 +7,7 @@ class CalculatorTest {16     fun `addition of two numbers`() {17-        calculator.add(1, 2).shouldBe(3)18+        calculator.add(1, 2).shouldBe(4)19     }20-import io.kotest.matchers.shouldBe21+import io.kotest.matchers.ints.*22 import org.junit.jupiter.api.Test23 class PersonTest {24@@ -7,7 +7,7 @@ class PersonTest {25     fun `get person name`() {26-        person.name.shouldBe("John")27+        person.name.shouldBe("John ")28     }

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