UseDataClass: do not report on expect classes (#7857)

Fixes #7832

Author: t-kameyama

detekt-rules-style/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/style/UseDataClass.kt

@@ -10,6 +10,7 @@ import io.gitlab.arturbosch.detekt.api.Rule
 import io.gitlab.arturbosch.detekt.api.Severity
 import io.gitlab.arturbosch.detekt.api.config
 import io.gitlab.arturbosch.detekt.api.internal.Configuration
+import io.gitlab.arturbosch.detekt.rules.isExpect
 import io.gitlab.arturbosch.detekt.rules.isOpen
 import org.jetbrains.kotlin.psi.KtClass
 import org.jetbrains.kotlin.psi.KtFile
@@ -132,7 +133,8 @@ class UseDataClass(config: Config = Config.empty) : Rule(config) {
             klass.isSealed() ||
             klass.isInline() ||
             klass.isValue() ||
-            klass.isInner()
+            klass.isInner() ||
+            klass.isExpect()
 
     private fun hasOnlyPrivateConstructors(klass: KtClass): Boolean {
         val primaryConstructor = klass.primaryConstructor

detekt-rules-style/src/test/kotlin/io/gitlab/arturbosch/detekt/rules/style/UseDataClassSpec.kt

@@ -7,6 +7,7 @@ import io.gitlab.arturbosch.detekt.test.assertThat
 import io.gitlab.arturbosch.detekt.test.compileAndLint
 import io.gitlab.arturbosch.detekt.test.compileAndLintWithContext
 import io.gitlab.arturbosch.detekt.test.lint
+import io.gitlab.arturbosch.detekt.test.lintWithContext
 import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
 import org.junit.jupiter.api.Nested
 import org.junit.jupiter.api.Test
@@ -429,4 +430,14 @@ class UseDataClassSpec(val env: KotlinCoreEnvironment) {
         """.trimIndent()
         assertThat(subject.compileAndLint(code)).isEmpty()
     }
+
+    @Test
+    fun `does not report expected classes`() {
+        val code = """
+            expect class Foo() {
+                val bar: String
+            }
+        """.trimIndent()
+        assertThat(subject.lintWithContext(env, code)).isEmpty()
+    }
 }