How to use beNullable method of class

Best Kotest code snippet using


Source:matchers.kt Github


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...3import io.kotest.matchers.MatcherResult4import io.kotest.matchers.should5import kotlin.reflect.KMutableProperty6import kotlin.reflect.KProperty7fun beNullable() = Matcher<KProperty<*>> {8 MatcherResult(9 it.returnType.isMarkedNullable,10 { "Property $it return type should be nullable" },11 { "Property $it return type should not be nullable" },12 )13}14fun beNotNullable() = beNullable().invert()15fun beMutable() = Matcher<KProperty<*>> {16 MatcherResult(17 it is KMutableProperty<*>,18 { "Property $it return type should be mutable" },19 { "Property $it return type should be immutable" },20 )21}22fun beImmutable() = beMutable().invert()23fun beNamed(expectedName: String) = Matcher<KProperty<*>> {24 MatcherResult(25 == expectedName,26 { "Property $it should be named $expectedName" },27 { "Property $it should not be named $expectedName" },28 )29}30fun KProperty<*>.shouldBeNullable() = this should beNullable()31fun KProperty<*>.shouldBeNotNullable() = this should beNullable().invert()32fun KProperty<*>.shouldBeMutable() = this should beMutable()33fun KProperty<*>.shouldBeImmutable() = this should beImmutable()34infix fun KProperty<*>.shouldBeNamed(expectedName: String) = this should beNamed(expectedName)...

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