How to use beOfType method of io.kotest.matchers.types.TypeMatchers class

Best Kotest code snippet using io.kotest.matchers.types.TypeMatchers.beOfType

TypeMatchersTest.kt

Source:TypeMatchersTest.kt

2import io.kotest.assertions.throwables.shouldThrow3import io.kotest.core.spec.style.WordSpec4import io.kotest.matchers.collections.shouldHaveSize5import io.kotest.matchers.types.beInstanceOf6import io.kotest.matchers.types.beOfType7import io.kotest.matchers.types.beTheSameInstanceAs8import io.kotest.matchers.nulls.beNull9import io.kotest.matchers.nulls.shouldBeNull10import io.kotest.matchers.should11import io.kotest.matchers.shouldBe12import io.kotest.matchers.shouldNot13import io.kotest.matchers.types.haveAnnotation14import io.kotest.matchers.types.instanceOf15import io.kotest.matchers.types.shouldBeInstanceOf16import io.kotest.matchers.types.shouldBeSameInstanceAs17import io.kotest.matchers.types.shouldBeTypeOf18import io.kotest.matchers.types.shouldHaveAnnotation19import io.kotest.matchers.types.shouldNotBeInstanceOf20import io.kotest.matchers.types.shouldNotBeTypeOf21import java.util.ArrayList22import java.util.LinkedList23@Suppress("UnnecessaryVariable")24class TypeMatchersTest : WordSpec() {25  @Retention(AnnotationRetention.RUNTIME)26  annotation class Vod27  @Vod28  class Wibble29  init {30     "typeOf" should {31        "test for exact type" {32           val arrayList: List<Int> = arrayListOf(1, 2, 3)33           arrayList.shouldBeTypeOf<ArrayList<*>>()34           arrayList.shouldNotBeTypeOf<List<*>>()35        }36     }37    "haveAnnotation(annotation)" should {38      "test for the presence of an annotation" {39        Wibble::class.java should haveAnnotation(Vod::class.java)40        Wibble::class.java.shouldHaveAnnotation(Vod::class.java)41      }42    }43    "beInstanceOf" should {44       "test that value is assignable to class" {45          val arrayList: List<Int> = arrayListOf(1, 2, 3)46          arrayList should beInstanceOf(ArrayList::class)47          arrayList should beInstanceOf<ArrayList<*>>()48          arrayList should instanceOf(ArrayList::class)49          arrayList should instanceOf<ArrayList<*>>()50          arrayList.shouldBeInstanceOf<ArrayList<*>>()51          arrayList should beInstanceOf(List::class)52          arrayList should beInstanceOf<List<*>>()53          arrayList should instanceOf(List::class)54          arrayList should instanceOf<List<*>>()55          arrayList.shouldBeInstanceOf<List<*>>()56          shouldThrow<AssertionError> { arrayList should beInstanceOf(LinkedList::class) }57          shouldThrow<AssertionError> { arrayList should beInstanceOf(LinkedList::class) }58          shouldThrow<AssertionError> { arrayList should beInstanceOf<LinkedList<*>>() }59          shouldThrow<AssertionError> { arrayList should instanceOf(LinkedList::class) }60          shouldThrow<AssertionError> { arrayList should instanceOf<LinkedList<*>>() }61          shouldThrow<AssertionError> { arrayList.shouldBeInstanceOf<LinkedList<*>>() }62          arrayList.shouldNotBeInstanceOf<LinkedList<*>>()63          shouldThrow<AssertionError> { arrayList.shouldNotBeInstanceOf<ArrayList<*>>() }64       }65       "use smart contracts to cast" {66          val list: Collection<Int> = arrayListOf(1, 2, 3)67          list.shouldBeInstanceOf<ArrayList<Int>>()68          list.add(4) // this will only work if smart contracts worked69       }70       "return the receiver" {71          val list: Collection<Int> = arrayListOf(1, 2, 3)72          list.shouldBeInstanceOf<ArrayList<Int>>()73             .shouldHaveSize(3)74       }75       "Allow execution with a lambda" {76          val list = arrayListOf(1, 2, 3)77          list.shouldBeInstanceOf<ArrayList<Int>> {78             it shouldBeSameInstanceAs list79          }80       }81      "Returns typecasted value when invoked with a lambda" {82        val list = arrayListOf(1, 2, 3)83        val typecastedList = list.shouldBeInstanceOf<ArrayList<Int>> {}84        typecastedList shouldBeSameInstanceAs list85      }86      "accepts null values" {87        val arrayList: List<Int>? = null88        shouldThrow<AssertionError> { arrayList should beInstanceOf(ArrayList::class) }89        shouldThrow<AssertionError> { arrayList.shouldBeInstanceOf<ArrayList<*>>() }90        shouldThrow<AssertionError> { arrayList shouldNot beInstanceOf(List::class) }91        shouldThrow<AssertionError> { arrayList.shouldNotBeInstanceOf<LinkedList<*>>() }92      }93    }94    "beOfType" should {95      "test that value have exactly the same type" {96        val arrayList: List<Int> = arrayListOf(1, 2, 3)97        arrayList should beOfType<ArrayList<Int>>()98        shouldThrow<AssertionError> {99          arrayList should beOfType<LinkedList<Int>>()100        }101        shouldThrow<AssertionError> {102          arrayList should beOfType<List<Int>>()103        }104      }105      "Allow execution with a lambda" {106        val list: Any = arrayListOf(1, 2, 3)107        list.shouldBeTypeOf<ArrayList<Int>> {108          it shouldBeSameInstanceAs list109          it[0] shouldBe 1110        }111      }112      "Returns typecasted value when executed with a lambda" {113        val list: Any = arrayListOf(1, 2, 3)114        val typecastedList = list.shouldBeTypeOf<ArrayList<Int>> {}115        typecastedList shouldBeSameInstanceAs list116        typecastedList[0] shouldBe 1117      }118       "uses smart contracts to cast" {119          val list: Any = arrayListOf(1, 2, 3)120          list.shouldBeTypeOf<ArrayList<Int>>()121          list[0] shouldBe 1122       }123       "return the receiver" {124          arrayListOf(1, 2, 3)125             .shouldBeTypeOf<ArrayList<Int>>()126             .shouldHaveSize(3)127       }128      "accepts null values" {129        val arrayList: List<Int>? = null130        shouldThrow<AssertionError> { arrayList should beOfType<List<Int>>() }131        shouldThrow<AssertionError> { arrayList.shouldBeTypeOf<List<*>>() }132        shouldThrow<AssertionError> { arrayList shouldNot beOfType<List<Int>>() }133        shouldThrow<AssertionError> { arrayList.shouldNotBeTypeOf<List<*>>() }134      }135    }136    "TypeMatchers.theSameInstanceAs" should {137      "test that references are equal" {138        val b: List<Int>? = listOf(1, 2, 3)139        val a: List<Int>? = b140        val c: List<Int>? = listOf(1, 2, 3)141        a should beTheSameInstanceAs(b)142        a.shouldBeSameInstanceAs(b)143        shouldThrow<AssertionError> {144          a should beTheSameInstanceAs(c)145        }146        shouldThrow<AssertionError> {...

beOfType

Using AI Code Generation

1    import io.kotest.matchers.types.beOfType2    import io.kotest.matchers.types.shouldBeOfType3    import io.kotest.matchers.types.shouldNotBeOfType4    import io.kotest.matchers.types.shouldNotBeSameInstanceAs5    import io.kotest.matchers.types.shouldNotBeSameTypeAs6    import io.kotest.matchers.types.shouldNotBeNull7    import io.kotest.matchers.types.shouldNotBeSameInstanceAs8    import io.kotest.matchers.types.shouldNotBeSameTypeAs9    import io.kotest.matchers.types.shouldNotBeNull10    import io.kotest.matchers.types.shouldNotBeSameInstanceAs11    import io.kotest.matchers.types.shouldNotBeSameTypeAs12    import io.kotest.matchers.types.shouldNotBeNull13    import io.kotest.matchers.types.shouldNotBeSameInstanceAs14    import io.kotest.matchers.types.shouldNotBeSameTypeAs15    import io.kotest.matchers.types.shouldNotBeNull16    import io.kotest.matchers.types.shouldNotBeSameInstanceAs17    import io.kotest.matchers.types.shouldNotBeSameTypeAs18    import io.kotest.matchers.types.shouldNotBeNull19    import io.kotest.matchers.types.shouldNotBeSameInstanceAs20    import io.kotest.matchers.types.shouldNotBeSameTypeAs21    import io.kotest.matchers.types.shouldNotBeNull22    import io.kotest.matchers.types.shouldNotBeSameInstanceAs23    import io.kotest.matchers.types.shouldNotBeSameTypeAs24    import io.kotest.matchers.types.shouldNotBeNull25    import io.kotest.matchers.types.shouldNotBeSameInstanceAs26    import io.kotest.matchers.types.shouldNotBeSameTypeAs27    import io.kotest.matchers.types.shouldNotBeNull28    import io.kotest.matchers.types.shouldNotBeSameInstanceAs29    import io.kotest.matchers.types.shouldNotBeSameTypeAs30    import io.kotest.matchers.types.shouldNotBeNull31    import io.kotest.matchers.types.shouldNotBeSameInstanceAs32    import io.kotest.matchers.types.shouldNotBeSameTypeAs33    import io.kotest.matchers.types.shouldNotBeNull34    import io.kotest.matchers.types

beOfType

Using AI Code Generation

1import io.kotest.matchers.shouldBe2import io.kotest.matchers.types.beOfType3import io.kotest.matchers.types.shouldBeInstanceOf4import io.kotest.matchers.types.shouldNotBeInstanceOf5import io.kotest.matchers.shouldBe6import io.kotest.matchers.types.beOfType7import io.kotest.matchers.types.shouldBeInstanceOf8import io.kotest.matchers.types.shouldNotBeInstanceOf9import io.kotest.matchers.shouldBe10import io.kotest.matchers.types.beOfType11import io.kotest.matchers.types.shouldBeInstanceOf12import io.kotest.matchers.types.shouldNotBeInstanceOf13import io.kotest.matchers.shouldBe14import io.kotest.matchers.types.beOfType15import io.kotest.matchers.types.shouldBeInstanceOf16import io.kotest.matchers.types.shouldNotBeInstanceOf17import io.kotest.matchers.shouldBe18import io.kotest.matchers.types.beOfType19import io.kotest.matchers.types.shouldBeInstanceOf20import io.kotest.matchers.types.shouldNotBeInstanceOf21import io.kotest.matchers.shouldBe22import io.kotest.matchers.types.beOfType23import io.kotest.matchers.types.shouldBeInstanceOf24import io.kotest.matchers.types.shouldNotBeInstanceOf25import io.kotest.matchers.shouldBe26import io.kotest.matchers.types.beOfType27import io.kotest.matchers.types.shouldBeInstanceOf28import io.kotest.matchers.types.shouldNotBeInstanceOf29import io.kotest.matchers.shouldBe30import io.kotest.matchers.types.beOfType31import io.kotest.matchers.types.shouldBeInstanceOf32import io

beOfType

Using AI Code Generation

1    it("should be of type") {2        a.shouldBeOfType<String>()3    }4    it("should be instance of") {5        a.shouldBeInstanceOf<String>()6    }7    it("should be null") {8        a.shouldBeNull()9    }10    it("should not be null") {11        a.shouldNotBeNull()12    }13    it("should be one of") {14        a.shouldBeOneOf("abc", "def")15    }16    it("should be the same instance as") {17        a.shouldBeTheSameInstanceAs("abc")18    }19    it("should not be the same instance as") {20        a.shouldNotBeTheSameInstanceAs("def")21    }22    it("should be the same instance as") {23        a.shouldBeTheSameInstanceAs("abc")24    }25    it("should not be the same instance as") {26        a.shouldNotBeTheSameInstanceAs("def")27    }28    it("should be the same instance as") {

beOfType

Using AI Code Generation

1fun <T : Any> beOfType(expected: KClass<T>) = object : Matcher<T> {2override fun test(value: T) = Result(3}4val list = listOf("a", "b", "c")5list should beOfType(List::class)6list should beOfType(ArrayList::class)7list should beOfType(List::class)8list should beOfType(ArrayList::class)9fun <T : Any> beOfType(expected: KClass<T>) = object : Matcher<T> {10override fun test(value: T) = Result(11}12val list = listOf("a", "b", "c")13list should beOfType(List::class)14list should beOfType(ArrayList::class)15list should beOfType(List::class)16list should beOfType(ArrayList::class)17fun <T : Any> beOfType(expected: KClass<T>) = object : Matcher<T> {18override fun test(value: T) = Result(19}20val list = listOf("a", "b", "c")21list should beOfType(List::class)22list should beOfType(ArrayList::class)23list should beOfType(List::class)24list should beOfType(ArrayList::class)25fun <T : Any> beOfType(expected: KClass<T>) = object : Matcher<T> {26override fun test(value: T) = Result(27}28val list = listOf("a", "b", "c")29list should beOfType(List::class)30list should beOfType(ArrayList::class)31list should beOfType(List::class)32list should beOfType(ArrayList::class)33fun <T : Any> beOfType(expected: KClass<T>) = object : Matcher<T> {

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