[ApiModel] Add test for outlining instance initializer

Bug: b/243883589
Change-Id: Icdfbb5cef64e0003848cc2f3cea67ffcdf1de4ba

src/test/java/com/android/tools/r8/apimodel/ApiModelOutlineInstanceInitializerTest.java

diff --git a/src/test/java/com/android/tools/r8/apimodel/ApiModelOutlineInstanceInitializerTest.java b/src/test/java/com/android/tools/r8/apimodel/ApiModelOutlineInstanceInitializerTest.java
new file mode 100644
index 0000000..ea08c59
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/apimodel/ApiModelOutlineInstanceInitializerTest.java
@@ -0,0 +1,179 @@
+// Copyright (c) 2022, 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.apimodel;
+
+import static com.android.tools.r8.apimodel.ApiModelingTestHelper.setMockApiLevelForClass;
+import static com.android.tools.r8.apimodel.ApiModelingTestHelper.setMockApiLevelForMethod;
+import static com.android.tools.r8.apimodel.ApiModelingTestHelper.verifyThat;
+import static org.junit.Assume.assumeTrue;
+
+import com.android.tools.r8.CompilationMode;
+import com.android.tools.r8.SingleTestRunResult;
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestCompilerBuilder;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.android.tools.r8.testing.AndroidBuildVersion;
+import com.android.tools.r8.utils.AndroidApiLevel;
+import com.android.tools.r8.utils.codeinspector.CodeInspector;
+import java.lang.reflect.Method;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameter;
+import org.junit.runners.Parameterized.Parameters;
+
+@RunWith(Parameterized.class)
+public class ApiModelOutlineInstanceInitializerTest extends TestBase {
+
+  private static final AndroidApiLevel classApiLevel = AndroidApiLevel.M;
+
+  private static final String[] EXPECTED =
+      new String[] {"LibraryClass::<clinit>", "Argument::<clinit>", "Hello World!"};
+
+  @Parameter public TestParameters parameters;
+
+  @Parameters(name = "{0}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withAllRuntimesAndApiLevels().build();
+  }
+
+  private void setupTestBuilder(TestCompilerBuilder<?, ?, ?, ?, ?> testBuilder) throws Exception {
+    testBuilder
+        .addLibraryClasses(LibraryClass.class, Argument.class)
+        .addDefaultRuntimeLibrary(parameters)
+        .addProgramClasses(Main.class)
+        .setMinApi(parameters.getApiLevel())
+        .addAndroidBuildVersion()
+        .apply(setMockApiLevelForClass(Argument.class, classApiLevel))
+        .apply(
+            setMockApiLevelForMethod(
+                Argument.class.getDeclaredConstructor(String.class), classApiLevel))
+        .apply(setMockApiLevelForClass(LibraryClass.class, classApiLevel))
+        .apply(
+            setMockApiLevelForMethod(
+                LibraryClass.class.getDeclaredConstructor(Argument.class), classApiLevel))
+        .apply(setMockApiLevelForMethod(LibraryClass.class.getMethod("print"), classApiLevel))
+        .apply(ApiModelingTestHelper::enableApiCallerIdentification)
+        .apply(ApiModelingTestHelper::enableOutliningOfMethods)
+        .apply(ApiModelingTestHelper::disableStubbingOfClasses);
+  }
+
+  public boolean addToBootClasspath() {
+    return parameters.isDexRuntime()
+        && parameters.getApiLevel().isGreaterThanOrEqualTo(classApiLevel);
+  }
+
+  @Test
+  public void testD8Debug() throws Exception {
+    assumeTrue(parameters.isDexRuntime());
+    testForD8()
+        .setMode(CompilationMode.DEBUG)
+        .apply(this::setupTestBuilder)
+        .compile()
+        .inspect(inspector -> inspect(inspector, false))
+        .applyIf(
+            addToBootClasspath(),
+            b -> b.addBootClasspathClasses(LibraryClass.class, Argument.class))
+        .run(parameters.getRuntime(), Main.class)
+        .apply(this::checkOutput);
+  }
+
+  @Test
+  public void testD8Release() throws Exception {
+    assumeTrue(parameters.isDexRuntime());
+    testForD8()
+        .setMode(CompilationMode.RELEASE)
+        .apply(this::setupTestBuilder)
+        .compile()
+        .inspect(inspector -> inspect(inspector, false))
+        .applyIf(
+            addToBootClasspath(),
+            b -> b.addBootClasspathClasses(LibraryClass.class, Argument.class))
+        .run(parameters.getRuntime(), Main.class)
+        .apply(this::checkOutput);
+  }
+
+  @Test
+  public void testR8() throws Exception {
+    testForR8(parameters.getBackend())
+        .apply(this::setupTestBuilder)
+        .addKeepMainRule(Main.class)
+        .compile()
+        .inspect(inspector -> inspect(inspector, true))
+        .applyIf(
+            addToBootClasspath(),
+            b -> b.addBootClasspathClasses(LibraryClass.class, Argument.class))
+        .run(parameters.getRuntime(), Main.class)
+        .apply(this::checkOutput);
+  }
+
+  private void inspect(CodeInspector inspector, boolean isR8) throws Exception {
+    Method mainMethod = Main.class.getMethod("main", String[].class);
+    verifyThat(inspector, parameters, Argument.class.getDeclaredConstructor(String.class))
+        .isOutlinedFromUntil(mainMethod, AndroidApiLevel.B);
+    verifyThat(inspector, parameters, LibraryClass.class.getDeclaredConstructor(Argument.class))
+        .isOutlinedFromUntil(mainMethod, AndroidApiLevel.B);
+    verifyThat(inspector, parameters, LibraryClass.class.getMethod("print"))
+        .isOutlinedFromUntil(mainMethod, isR8 ? AndroidApiLevel.B : classApiLevel);
+  }
+
+  private void checkOutput(SingleTestRunResult<?> runResult) {
+    if (parameters.isDexRuntime()
+        && parameters.getApiLevel().isGreaterThanOrEqualTo(classApiLevel)) {
+      runResult.assertSuccessWithOutputLines(EXPECTED);
+    } else {
+      runResult.assertSuccessWithOutputLines("Not calling API");
+    }
+  }
+
+  public static class Argument {
+
+    private final String string;
+
+    static {
+      System.out.println("Argument::<clinit>");
+    }
+
+    public Argument(String string) {
+      this.string = string;
+    }
+
+    @Override
+    public String toString() {
+      return string;
+    }
+  }
+
+  // Only present from api level 23.
+  public static class LibraryClass {
+
+    private final Argument argument;
+
+    static {
+      System.out.println("LibraryClass::<clinit>");
+    }
+
+    public LibraryClass(Argument argument) {
+      this.argument = argument;
+    }
+
+    public void print() {
+      System.out.println(argument.toString());
+    }
+  }
+
+  public static class Main {
+
+    public static void main(String[] args) {
+      if (AndroidBuildVersion.VERSION >= 23) {
+        LibraryClass libraryClass = new LibraryClass(new Argument("Hello World!"));
+        libraryClass.print();
+      } else {
+        System.out.println("Not calling API");
+      }
+    }
+  }
+}

src/test/java/com/android/tools/r8/apimodel/ApiModelingTestHelper.java

diff --git a/src/test/java/com/android/tools/r8/apimodel/ApiModelingTestHelper.java b/src/test/java/com/android/tools/r8/apimodel/ApiModelingTestHelper.java
index 4166e5e..178c115 100644
--- a/src/test/java/com/android/tools/r8/apimodel/ApiModelingTestHelper.java
+++ b/src/test/java/com/android/tools/r8/apimodel/ApiModelingTestHelper.java
@@ -196,6 +196,12 @@
         inspector, parameters, Reference.methodFromMethod(method));
   }
 
+  static ApiModelingMethodVerificationHelper verifyThat(
+      CodeInspector inspector, TestParameters parameters, Constructor method) {
+    return new ApiModelingMethodVerificationHelper(
+        inspector, parameters, Reference.methodFromMethod(method));
+  }
+
   static ApiModelingFieldVerificationHelper verifyThat(
       CodeInspector inspector, TestParameters parameters, Field field) {
     return new ApiModelingFieldVerificationHelper(