test-snippets.md

Test Snippets

1. Every Class Has Test

@Test
fun `every class has test`() {
    Konsist
        .scopeFromProduction()
        .classes()
        .assertTrue { it.hasTestClass() }
}

2. Every Class - Except Data And Value Class - Has Test

@Test
fun `every class - except data and value class - has test`() {
    Konsist
        .scopeFromProduction()
        .classes()
        .withoutModifier(KoModifier.DATA, KoModifier.VALUE)
        .assertTrue { it.hasTestClass() }
}

3. Test Classes Should Have Test Subject Named Sut

@Test
fun `test classes should have test subject named sut`() {
    Konsist
        .scopeFromTest()
        .classes()
        .assertTrue {
            val type = it.name.removeSuffix("Test")
            val sut = it
                .properties()
                .firstOrNull { property -> property.name == "sut" }

            sut != null && (sut.type?.name == type || sut.text.contains("$type("))
        }
}

4. Test Classes Should Have All Members Private Besides Tests

@Test
fun `test classes should have all members private besides tests`() {
    Konsist
        .scopeFromTest()
        .classes()
        .declarations()
        .filterIsInstance<KoAnnotationProvider>()
        .withoutAnnotationOf(Test::class, ParameterizedTest::class, RepeatedTest::class)
        .filterIsInstance<KoVisibilityModifierProvider>()
        .assertTrue { it.hasPrivateModifier }
}