Add test for JvmStatic on functions, interfaces and props

Bug: 158393309
Change-Id: I258836c91b244452f40dc1ade2b7f5b2c98dd375
diff --git a/src/test/java/com/android/tools/r8/kotlin/metadata/MetadataRewriteJvmStaticTest.java b/src/test/java/com/android/tools/r8/kotlin/metadata/MetadataRewriteJvmStaticTest.java
new file mode 100644
index 0000000..efe4143
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/kotlin/metadata/MetadataRewriteJvmStaticTest.java
@@ -0,0 +1,147 @@
+// Copyright (c) 2020, the R8 project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+package com.android.tools.r8.kotlin.metadata;
+
+import static com.android.tools.r8.KotlinCompilerTool.KOTLINC;
+import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.assertEquals;
+
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.android.tools.r8.ToolHelper;
+import com.android.tools.r8.ToolHelper.KotlinTargetVersion;
+import com.android.tools.r8.kotlin.metadata.jvmstatic_app.MainJava;
+import com.android.tools.r8.shaking.ProguardKeepAttributes;
+import com.android.tools.r8.utils.DescriptorUtils;
+import com.android.tools.r8.utils.StringUtils;
+import com.android.tools.r8.utils.codeinspector.ClassSubject;
+import com.android.tools.r8.utils.codeinspector.CodeInspector;
+import com.android.tools.r8.utils.codeinspector.KmClassSubject;
+import com.android.tools.r8.utils.codeinspector.KmFunctionSubject;
+import com.android.tools.r8.utils.codeinspector.KmPropertySubject;
+import com.android.tools.r8.utils.codeinspector.MethodSubject;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+@RunWith(Parameterized.class)
+public class MetadataRewriteJvmStaticTest extends KotlinMetadataTestBase {
+
+  private static final String EXPECTED =
+      StringUtils.lines("Hello, Hello", "Calling func...", "Foo");
+  private static final String PKG_LIB = PKG + ".jvmstatic_lib";
+  private static final String PKG_APP = PKG + ".jvmstatic_app";
+
+  private final TestParameters parameters;
+
+  @Parameterized.Parameters(name = "{0} target: {1}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withCfRuntimes().build();
+  }
+
+  public MetadataRewriteJvmStaticTest(TestParameters parameters) {
+    // We are testing static methods on interfaces which requires java 8.
+    super(KotlinTargetVersion.JAVA_8);
+    this.parameters = parameters;
+  }
+
+  private static Path kotlincLibJar = Paths.get("");
+
+  @BeforeClass
+  public static void createLibJar() throws Exception {
+    kotlincLibJar =
+        kotlinc(KOTLINC, KotlinTargetVersion.JAVA_8)
+            .addSourceFiles(
+                getKotlinFileInTest(DescriptorUtils.getBinaryNameFromJavaType(PKG_LIB), "lib"))
+            .compile();
+  }
+
+  @Test
+  public void smokeTest() throws Exception {
+    Path output =
+        kotlinc(parameters.getRuntime().asCf(), KOTLINC, targetVersion)
+            .addClasspathFiles(kotlincLibJar)
+            .addSourceFiles(
+                getKotlinFileInTest(DescriptorUtils.getBinaryNameFromJavaType(PKG_APP), "main"))
+            .setOutputPath(temp.newFolder().toPath())
+            .compile();
+    testForJvm()
+        .addRunClasspathFiles(ToolHelper.getKotlinStdlibJar(), kotlincLibJar)
+        .addClasspath(output)
+        .run(parameters.getRuntime(), PKG_APP + ".MainKt")
+        .assertSuccessWithOutput(EXPECTED);
+  }
+
+  @Test
+  public void testMetadata() throws Exception {
+    Path libJar =
+        testForR8(parameters.getBackend())
+            .addProgramFiles(kotlincLibJar)
+            .addKeepAllClassesRule()
+            .addKeepAttributes(ProguardKeepAttributes.RUNTIME_VISIBLE_ANNOTATIONS)
+            .compile()
+            .inspect(this::inspect)
+            .writeToZip();
+    testKotlin(libJar);
+    testJava(libJar);
+  }
+
+  private void testKotlin(Path libJar) throws Exception {
+    Path output =
+        kotlinc(parameters.getRuntime().asCf(), KOTLINC, targetVersion)
+            .addClasspathFiles(libJar)
+            .addSourceFiles(
+                getKotlinFileInTest(DescriptorUtils.getBinaryNameFromJavaType(PKG_APP), "main"))
+            .setOutputPath(temp.newFolder().toPath())
+            .compile();
+    testForJvm()
+        .addRunClasspathFiles(ToolHelper.getKotlinStdlibJar(), libJar)
+        .addClasspath(output)
+        .run(parameters.getRuntime(), PKG_APP + ".MainKt")
+        .assertSuccessWithOutput(EXPECTED);
+  }
+
+  private void testJava(Path libJar) throws Exception {
+    testForJvm()
+        .addRunClasspathFiles(ToolHelper.getKotlinStdlibJar(), libJar)
+        .addProgramClasses(MainJava.class)
+        .run(parameters.getRuntime(), MainJava.class)
+        .assertSuccessWithOutput(EXPECTED);
+  }
+
+  private void inspect(CodeInspector inspector) {
+    inspectLib(inspector);
+    inspectInterfaceWithCompanion(inspector);
+  }
+
+  private void inspectLib(CodeInspector inspector) {
+    ClassSubject clazz = inspector.clazz(PKG_LIB + ".Lib");
+    assertThat(clazz, isPresent());
+    KmClassSubject kmClass = clazz.getKmClass();
+    assertThat(kmClass, isPresent());
+    KmFunctionSubject staticFun = kmClass.kmFunctionWithUniqueName("staticFun");
+    assertThat(staticFun, isPresent());
+    assertEquals("staticFun(Lkotlin/jvm/functions/Function0;)V", staticFun.signature().asString());
+    KmPropertySubject staticProp = kmClass.kmPropertyWithUniqueName("staticProp");
+    assertThat(staticProp, isPresent());
+  }
+
+  private void inspectInterfaceWithCompanion(CodeInspector inspector) {
+    ClassSubject itf = inspector.clazz(PKG_LIB + ".InterfaceWithCompanion");
+    assertThat(itf, isPresent());
+    MethodSubject greet = itf.uniqueMethodWithName("greet");
+    assertThat(greet, isPresent());
+
+    ClassSubject itfCompanion = inspector.clazz(PKG_LIB + ".InterfaceWithCompanion$Companion");
+    assertThat(itfCompanion, isPresent());
+    KmClassSubject kmClass = itfCompanion.getKmClass();
+    KmFunctionSubject greetKm = kmClass.kmFunctionWithUniqueName("greet");
+    assertThat(greetKm, isPresent());
+    assertEquals("greet(Ljava/lang/String;)V", greetKm.signature().asString());
+  }
+}
diff --git a/src/test/java/com/android/tools/r8/kotlin/metadata/jvmstatic_app/MainJava.java b/src/test/java/com/android/tools/r8/kotlin/metadata/jvmstatic_app/MainJava.java
new file mode 100644
index 0000000..947d12d
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/kotlin/metadata/jvmstatic_app/MainJava.java
@@ -0,0 +1,18 @@
+// Copyright (c) 2020, the R8 project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+package com.android.tools.r8.kotlin.metadata.jvmstatic_app;
+
+import com.android.tools.r8.kotlin.metadata.jvmstatic_lib.InterfaceWithCompanion;
+import com.android.tools.r8.kotlin.metadata.jvmstatic_lib.Lib;
+
+public class MainJava {
+
+  public static void main(String[] args) {
+    InterfaceWithCompanion.greet("Hello");
+    Lib.staticFun(() -> true);
+    Lib.setStaticProp("Foo");
+    System.out.println(Lib.getStaticProp());
+  }
+}
diff --git a/src/test/java/com/android/tools/r8/kotlin/metadata/jvmstatic_app/main.kt b/src/test/java/com/android/tools/r8/kotlin/metadata/jvmstatic_app/main.kt
new file mode 100644
index 0000000..6bd1218
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/kotlin/metadata/jvmstatic_app/main.kt
@@ -0,0 +1,15 @@
+// Copyright (c) 2020, the R8 project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+package com.android.tools.r8.kotlin.metadata.jvmstatic_app
+
+import com.android.tools.r8.kotlin.metadata.jvmstatic_lib.InterfaceWithCompanion
+import com.android.tools.r8.kotlin.metadata.jvmstatic_lib.Lib
+
+fun main() {
+  InterfaceWithCompanion.greet("Hello")
+  Lib.staticFun { true }
+  Lib.staticProp = "Foo"
+  println(Lib.staticProp)
+}
\ No newline at end of file
diff --git a/src/test/java/com/android/tools/r8/kotlin/metadata/jvmstatic_lib/lib.kt b/src/test/java/com/android/tools/r8/kotlin/metadata/jvmstatic_lib/lib.kt
new file mode 100644
index 0000000..cc0f1fb
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/kotlin/metadata/jvmstatic_lib/lib.kt
@@ -0,0 +1,25 @@
+// Copyright (c) 2020, the R8 project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+package com.android.tools.r8.kotlin.metadata.jvmstatic_lib
+
+interface InterfaceWithCompanion {
+  companion object {
+    @JvmStatic fun greet(username: String) {
+      println("Hello, $username")
+    }
+  }
+}
+
+object Lib {
+
+  @JvmStatic
+  fun staticFun(func : () -> Boolean) {
+    println("Calling func...")
+    func()
+  }
+
+  @JvmStatic
+  var staticProp : String = ""
+}
\ No newline at end of file