Rewrite module test in kotlin

okio/build.gradle.kts

@@ -251,8 +251,14 @@ tasks {
     options.release = 9
   }
 
+  val integrationTest = named<Test>("integrationTest") {
+    jvmArgumentProviders.add(CommandLineArgumentProvider {
+      listOf("--patch-module", "okio.test.integration=${sourceSets["integrationTest"].output.asPath}")
+    })
+  }
+
   check {
-    dependsOn(testing.suites.named("integrationTest"))
+    dependsOn(integrationTest)
   }
 }
 

okio/src/jvmIntegrationTest/java/module-info.java

@@ -1,4 +1,5 @@
 open module okio.test.integration {
   requires okio;
   requires junit;
+  requires kotlin.stdlib;
 }

okio/src/jvmIntegrationTest/kotlin/okio/test/integration/ModuleTest.kt

@@ -0,0 +1,21 @@
+package okio.test.integration
+
+import okio.FileSystem
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class ModuleTest {
+  @Test
+  fun testModule() {
+    // test okio.test.integration is modular
+    assertTrue(ModuleTest::class.java.module.isNamed)
+    assertEquals(ModuleTest::class.java.module.name, "okio.test.integration")
+    assertFalse(ModuleTest::class.java.module.descriptor.isAutomatic)
+    // test okio is modular
+    assertTrue(FileSystem::class.java.module.isNamed)
+    assertEquals(FileSystem::class.java.module.name, "okio")
+    assertFalse(FileSystem::class.java.module.descriptor.isAutomatic)
+  }
+}