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ComposeCompositionLocalNamingCheckTest.kt
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ComposeCompositionLocalNamingCheckTest.kt
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// Copyright 2022 Twitter, Inc.
// SPDX-License-Identifier: Apache-2.0
package com.twitter.compose.rules.detekt
import com.twitter.compose.rules.ComposeCompositionLocalNaming
import io.gitlab.arturbosch.detekt.api.Config
import io.gitlab.arturbosch.detekt.api.SourceLocation
import io.gitlab.arturbosch.detekt.test.assertThat
import io.gitlab.arturbosch.detekt.test.lint
import org.intellij.lang.annotations.Language
import org.junit.jupiter.api.Test
class ComposeCompositionLocalNamingCheckTest {
private val rule = ComposeCompositionLocalNamingCheck(Config.empty)
@Test
fun `error when a CompositionLocal has a wrong name`() {
@Language("kotlin")
val code =
"""
val AppleLocal = staticCompositionLocalOf<String> { "Apple" }
val Plum: String = staticCompositionLocalOf { "Plum" }
""".trimIndent()
val errors = rule.lint(code)
assertThat(errors)
.hasStartSourceLocations(
SourceLocation(1, 5),
SourceLocation(2, 5)
)
for (error in errors) {
assertThat(error).hasMessage(ComposeCompositionLocalNaming.CompositionLocalNeedsLocalPrefix)
}
}
@Test
fun `passes when a CompositionLocal is well named`() {
@Language("kotlin")
val code =
"""
val LocalBanana = staticCompositionLocalOf<String> { "Banana" }
val LocalPotato = compositionLocalOf { "Potato" }
""".trimIndent()
val errors = rule.lint(code)
assertThat(errors).isEmpty()
}
}