Add test checking R8 compiled programs can be debugged.

This checks that compiling in debug or compiling no-optimize no-obfuscate will
yield a result that has maintained the input line numbers.

Change-Id: I29c3a3046f270752d893a183b963bfb9e7093e3b
diff --git a/src/test/java/com/android/tools/r8/debug/R8DebugNonMinifiedProgramTest.java b/src/test/java/com/android/tools/r8/debug/R8DebugNonMinifiedProgramTest.java
new file mode 100644
index 0000000..cb32247
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/debug/R8DebugNonMinifiedProgramTest.java
@@ -0,0 +1,32 @@
+// Copyright (c) 2019, 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.debug;
+
+import com.android.tools.r8.NeverClassInline;
+import com.android.tools.r8.NeverInline;
+
+public class R8DebugNonMinifiedProgramTest {
+
+  public static void main(String[] args) {
+    System.out.println("Hello, world: " + new A().foo());
+  }
+
+  @NeverClassInline
+  public static class A {
+
+    @NeverInline
+    String foo() {
+      return "Class A";
+    }
+  }
+
+  @NeverClassInline
+  public static class B {
+
+    @NeverInline
+    String bar() {
+      return "Class B";
+    }
+  }
+}
diff --git a/src/test/java/com/android/tools/r8/debug/R8DebugNonMinifiedProgramTestRunner.java b/src/test/java/com/android/tools/r8/debug/R8DebugNonMinifiedProgramTestRunner.java
new file mode 100644
index 0000000..ecfc8c1
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/debug/R8DebugNonMinifiedProgramTestRunner.java
@@ -0,0 +1,93 @@
+// Copyright (c) 2019, 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.debug;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import com.android.tools.r8.R8FullTestBuilder;
+import com.android.tools.r8.R8TestCompileResult;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.android.tools.r8.utils.AndroidApiLevel;
+import java.util.function.BiFunction;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+@RunWith(Parameterized.class)
+public class R8DebugNonMinifiedProgramTestRunner extends DebugTestBase {
+
+  private static final Class<?> CLASS = R8DebugNonMinifiedProgramTest.class;
+
+  @Parameterized.Parameters(name = "{0}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withAllRuntimes().withAllApiLevels().build();
+  }
+
+  private final TestParameters parameters;
+
+  public R8DebugNonMinifiedProgramTestRunner(TestParameters parameters) {
+    this.parameters = parameters;
+  }
+
+  private static BiFunction<Backend, AndroidApiLevel, R8TestCompileResult> compiledDebug
+      = memoizeBiFunction(R8DebugNonMinifiedProgramTestRunner::compileDebug);
+
+  private static BiFunction<Backend, AndroidApiLevel, R8TestCompileResult> compiledNoOptNoMinify
+      = memoizeBiFunction(R8DebugNonMinifiedProgramTestRunner::compileNoOptNoMinify);
+
+  private static R8TestCompileResult compileDebug(Backend backend, AndroidApiLevel apiLevel)
+      throws Exception {
+    return compile(testForR8(getStaticTemp(), backend).debug(), apiLevel);
+  }
+
+  private static R8TestCompileResult compileNoOptNoMinify(Backend backend, AndroidApiLevel apiLevel)
+      throws Exception {
+    return compile(
+        testForR8(getStaticTemp(), backend)
+            .addKeepRules("-dontoptimize", "-dontobfuscate", "-keepattributes LineNumberTable"),
+        apiLevel);
+  }
+
+  private static R8TestCompileResult compile(R8FullTestBuilder builder, AndroidApiLevel apiLevel)
+      throws Exception {
+    return builder.enableInliningAnnotations()
+        .enableClassInliningAnnotations()
+        .addProgramClassesAndInnerClasses(CLASS)
+        .addKeepMainRule(CLASS)
+        .setMinApi(apiLevel)
+        .compile()
+        .inspect(inspector -> {
+          // Check that tree shaking is running (e.g., B is removed).
+          assertTrue(inspector.clazz(R8DebugNonMinifiedProgramTest.A.class).isPresent());
+          assertFalse(inspector.clazz(R8DebugNonMinifiedProgramTest.B.class).isPresent());
+        });
+  }
+
+  @Test
+  public void testDebugMode() throws Throwable {
+    runTest(compiledDebug.apply(parameters.getBackend(), parameters.getApiLevel()));
+  }
+
+  @Test
+  public void testNoOptimizationAndNoMinification() throws Throwable {
+    runTest(compiledNoOptNoMinify.apply(parameters.getBackend(), parameters.getApiLevel()));
+  }
+
+  private void runTest(R8TestCompileResult compileResult) throws Throwable {
+    compileResult
+        .run(parameters.getRuntime(), CLASS)
+        .assertSuccessWithOutputLines("Hello, world: Class A");
+
+    DebugTestConfig debugTestConfig = compileResult.debugConfig();
+    assertNull("For this test the map file must not be present!", debugTestConfig.getProguardMap());
+    runDebugTest(debugTestConfig, CLASS,
+        breakpoint(CLASS.getTypeName(), "main"),
+        run(),
+        checkLine(12),
+        run());
+  }
+}
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