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How to use testNotNull method of io.kotest.matchers.internal class

Best Kotest code snippet using io.kotest.matchers.internal.testNotNull

Matcher.kt

Source:Matcher.kt

...56 */57internal abstract class NeverNullMatcher<T : Any?> : Matcher<T?> {58   final override fun test(value: T?): MatcherResult {59      return if (value == null) invoke(false, { "Expecting actual not to be null" }, { "" })60      else testNotNull(value)61   }62   override fun invert(): Matcher<T?> = object : NeverNullMatcher<T?>() {63      override fun testNotNull(value: T?): MatcherResult {64         if (value == null) return invoke(false, { "Expecting actual not to be null" }, { "" })65         val result = this@NeverNullMatcher.testNotNull(value)66         return invoke(!result.passed(), { result.negatedFailureMessage() }, { result.failureMessage() })67      }68   }69   abstract fun testNotNull(value: T): MatcherResult70   companion object {71      /**72       * Create matcher with the given function to evaluate the value and return a MatcherResult73       *74       * @param tester The function that evaluates a value and returns a MatcherResult75       */76      inline operator fun <T : Any> invoke(crossinline tester: (T) -> MatcherResult) = object : NeverNullMatcher<T>() {77         override fun testNotNull(value: T) = tester(value)78      }79   }80}81fun <T : Any> neverNullMatcher(t: (T) -> MatcherResult): Matcher<T?> {82   return object : NeverNullMatcher<T>() {83      override fun testNotNull(value: T): MatcherResult {84         return t(value)85      }86   }87}88/**89 * An instance of [MatcherResult] contains the result of an evaluation of a [Matcher].90 */91interface MatcherResult {92   /**93    * Returns true if the matcher indicated this was a valid94    * value and false if the matcher indicated an invalid value.95    */96   fun passed(): Boolean97   /**...

testNotNull

Using AI Code Generation

1+import io.kotest.matchers.internal.test.*2+import io.kotest.matchers.internal.should.*3+import io.kotest.matchers.internal.test.*4+import io.kotest.matchers.internal.should.*5+import io.kotest.matchers.internal.test.*6+import io.kotest.matchers.internal.should.*7+import io.kotest.matchers.internal.test.*8+import io.kotest.matchers.internal.should.*9+import io.kotest.matchers.internal.test.*10+import io.kotest.matchers.internal.should.*11+import io.kotest.matchers.internal.test.*12+import io.kotest.matchers.internal.should.*13+import io.kotest.matchers.internal.test.*14+import io.kotest.matchers.internal.should.*15+import io.kotest.matchers.internal.test.*16+import io.kotest.matchers.internal.should.*17+import io.kotest.matchers.internal.test.*18+import io.kotest.matchers.internal.should.*19+import io.kotest.matchers.internal.test.*20+import io.kotest.matchers.internal.should.*21+import io.kotest.matchers.internal.test.*22+import io.kotest.matchers.internal.should.*23+import io.kotest.matchers.internal.test.*24+import io.kotest.matchers.internal.should.*25+import io.kotest

testNotNull

Using AI Code Generation

1    import io.kotest.matchers.internal.testNotNull2    import io.kotest.matchers.shouldBe3    import org.junit.jupiter.api.Test4    import org.junit.jupiter.api.assertThrows5    class Test {6        fun `test testNotNull`() {7            assertThrows<AssertionError> {8                testNotNull(null) { }9            }10            testNotNull(1) {11            }12        }13    }

testNotNull

Using AI Code Generation

1+    fun testNotNull() {2+        actual shouldNot beNull()3+    }4+    fun testNull() {5+        actual shouldBe nullValue()6+    }7+    fun testNotSame() {8+        actual shouldNot beSameInstanceAs(expected)9+    }10+    fun testSame() {11+        actual shouldBeSameInstanceAs(actual)12+    }13+    fun testInstanceOf() {14+        actual should beInstanceOf(String::class)15+    }16+    fun testNotInstanceOf() {17+        actual shouldNot beInstanceOf(Int::class)18+    }19+    fun testIsIn() {20+        actual should beIn("Hello", "World")21+    }22+    fun testNotIsIn() {23+        actual shouldNot beIn("Hi", "World")24+    }25+    fun testIsNotIn() {26+        actual shouldNot beIn("Hi",

testNotNull

Using AI Code Generation

1+internal fun testNotNull(actual: Any?, message: String? = null) {2+  if (actual == null) {3+    throw AssertionError("expected value to not be null${if (message == null) "" else ": $message"}")4+  }5+}6+internal fun testNull(actual: Any?, message: String? = null) {7+  if (actual != null) {8+    throw AssertionError("expected value to be null${if (message == null) "" else ": $message"}")9+  }10+}11+internal fun testInstanceOf(actual: Any?, expected: KClass<*>, message: String? = null) {12+  if (actual == null) {13+    throw AssertionError("expected value to not be null${if (message == null) "" else ": $message"}")14+  }15+  if (!expected.isInstance(actual)) {16+    throw AssertionError("expected value to be of type ${expected.simpleName} but was ${actual::class.simpleName}${if (message == null) "" else ": $message"}")17+  }18+}19+internal fun testNotInstanceOf(actual: Any?, expected: KClass<*>, message: String? = null) {20+  if (actual == null) {21+    throw AssertionError("expected value to not be null${if (message == null) "" else ": $message"}")22+  }23+  if (expected.isInstance(actual)) {24+    throw AssertionError("expected value to not be of type ${expected.simpleName}${if (message == null) "" else ": $message"}")25+  }26+}27+internal fun testSameInstance(actual: Any?, expected: Any?, message: String? = null) {28+  if (actual !== expected) {29+    throw AssertionError("expected value to be the same instance as $expected but was $actual${if (message == null) "" else ": $message"}")30+  }31+}

testNotNull

Using AI Code Generation

1+import io.kotest.matchers.internal.test.*2+class TestNotNullTest : StringSpec({3+   val notNull = TestNotNull()4+   "should pass for a non-null value" {5+      notNull.test(1)6+   }7+   "should fail for null" {8+      shouldThrow<AssertionError> {9+         notNull.test(null)10+      }11+   }12+})13 import io.kotest.assertions.show.show14+import io.kotest.matchers.internal.test.TestNotNull15 import kotlin.reflect.KClass16@@ -10,6 +11,7 @@ import kotlin.reflect.KClass17 interface Assertion {

testNotNull

Using AI Code Generation

1	val testNotNull = TestNotNull::class.java.getDeclaredMethod("test", Any::class.java)2	val test = { a: Any? -> testNotNull.invoke(null, a) as Boolean }3	val testNull = TestNull::class.java.getDeclaredMethod("test", Any::class.java)4	val testNullFun = { a: Any? -> testNull.invoke(null, a) as Boolean }5	"should be true when testNotNull is called with not null value" {6		test(1) shouldBe true7	}8	"should be false when testNotNull is called with null value" {9		test(null) shouldBe false10	}11	"should be true when testNull is called with null value" {12		testNullFun(null) shouldBe true13	}14	"should be false when testNull is called with not null value" {15		testNullFun(1) shouldBe false16	}17})18private class TestNotNull {19	companion object {20		fun test(a: Any?) = a != null21	}22}23private class TestNull {24	companion object {25		fun test(a: Any?) = a == null26	}27}

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