43 lines
1.4 KiB
Kotlin
43 lines
1.4 KiB
Kotlin
package be.simplenotes.domain.testutils
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import arrow.core.Either
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import com.natpryce.hamkrest.MatchResult
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import com.natpryce.hamkrest.Matcher
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fun isLeft() = object : Matcher<Either<*, *>> {
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override val description: String
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get() = "is Either.Left<>"
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override fun invoke(actual: Either<*, *>) = when {
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actual.isLeft() -> MatchResult.Match
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else -> MatchResult.Mismatch("is Either.Right<>")
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}
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}
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fun isRight() = object : Matcher<Either<*, *>> {
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override val description: String
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get() = "is Either.Right<>"
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override fun invoke(actual: Either<*, *>) = when (actual) {
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is Either.Right -> MatchResult.Match
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is Either.Left -> {
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val valueA = actual.a
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MatchResult.Mismatch("is Either.Left<${if (valueA == null) "Null" else valueA::class.simpleName}>")
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}
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}
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}
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inline fun <reified A> isLeftOfType() = object : Matcher<Either<*, *>> {
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override val description: String
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get() = "is Either.Left<${A::class.qualifiedName}>"
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override fun invoke(actual: Either<*, *>) = when (actual) {
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is Either.Right -> MatchResult.Mismatch("was Either.Right<>")
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is Either.Left -> {
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val valueA = actual.a
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if (valueA is A) MatchResult.Match
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else MatchResult.Mismatch("was Left<${if (valueA == null) "Null" else valueA::class.simpleName}>")
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}
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}
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}
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