[Compose] Test composition of method with no line info after having it
Bug: b/284925475
Change-Id: I58db6515ea6cb59c7ea607d6a801b52a4064da66
diff --git a/src/test/java/com/android/tools/r8/mappingcompose/ComposeMethodWithLineNumberRemovedTest.java b/src/test/java/com/android/tools/r8/mappingcompose/ComposeMethodWithLineNumberRemovedTest.java
new file mode 100644
index 0000000..abd20c6
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/mappingcompose/ComposeMethodWithLineNumberRemovedTest.java
@@ -0,0 +1,63 @@
+// Copyright (c) 2023, 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.mappingcompose;
+
+import static org.junit.Assert.assertThrows;
+
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.android.tools.r8.naming.ClassNameMapper;
+import com.android.tools.r8.naming.MappingComposer;
+import com.android.tools.r8.utils.StringUtils;
+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;
+
+/*
+ * This is a regression test for b/284925475.
+ */
+@RunWith(Parameterized.class)
+public class ComposeMethodWithLineNumberRemovedTest extends TestBase {
+
+ @Parameter() public TestParameters parameters;
+
+ @Parameters(name = "{0}")
+ public static TestParametersCollection data() {
+ return getTestParameters().withNoneRuntime().build();
+ }
+
+ private static final String mappingFoo =
+ StringUtils.unixLines(
+ "# {'id':'com.android.tools.r8.mapping','version':'2.2'}",
+ "package.FieldDefinition$FullFieldDefinition -> package.internal.Th:",
+ "package.FieldDefinition -> package.internal.Uh:",
+ "# {'id':'sourceFile','fileName':'FieldDefinition.java'}",
+ " 1:1:void <init>():13:13 -> <init>",
+ " 1:1:package.FieldDefinition$FullFieldDefinition asFullFieldDefinition():0:0 -> a",
+ " # {'id':'com.android.tools.r8.residualsignature',"
+ + "'signature':'()Lpackage/internal/Th;'}");
+ private static final String mappingBar =
+ StringUtils.unixLines(
+ "# {'id':'com.android.tools.r8.mapping','version':'2.2'}",
+ "package.ClassReference ->" + " package.ClassReference:",
+ "package.internal.Th -> package.other_internal.F1:",
+ "package.internal.Uh -> package.other_internal.M1:",
+ "# {'id':'sourceFile','fileName':'R8_new_hash_name'}",
+ " 1:1:void <init>() -> <init>",
+ " package.internal.Th a() -> b",
+ " # {'id':'com.android.tools.r8.residualsignature',"
+ + "'signature':'()Lpackage/retrace_internal/F1;'}");
+
+ @Test
+ public void testCompose() throws Exception {
+ ClassNameMapper mappingForFoo = ClassNameMapper.mapperFromString(mappingFoo);
+ ClassNameMapper mappingForBar = ClassNameMapper.mapperFromString(mappingBar);
+ // TODO(b/284925475): We should relax the assertion that line numbers can be removed.
+ assertThrows(AssertionError.class, () -> MappingComposer.compose(mappingForFoo, mappingForBar));
+ }
+}
