Add support for linking classes.

Change-Id: I0026be6e4c919f7391fd83c654f58c3bc67f44e1
diff --git a/src/object_test.cc b/src/object_test.cc
index d6d22c3..7cbf086 100644
--- a/src/object_test.cc
+++ b/src/object_test.cc
@@ -1,7 +1,9 @@
 // Copyright 2011 Google Inc. All Rights Reserved.
 // Author: cshapiro@google.com (Carl Shapiro)
 
+#include "src/dex_file.h"
 #include "src/object.h"
+#include "src/scoped_ptr.h"
 
 #include <stdio.h>
 #include "gtest/gtest.h"
@@ -22,4 +24,146 @@
                                       "Ljava/lang/reflect/Method;"));
 }
 
+// class ProtoCompare {
+//     int m1(short x, int y, long z) { return x + y + (int)z; }
+//     int m2(short x, int y, long z) { return x + y + (int)z; }
+//     int m3(long x, int y, short z) { return (int)x + y + z; }
+//     long m4(long x, int y, short z) { return x + y + z; }
+// }
+static const char kProtoCompareDex[] =
+  "ZGV4CjAzNQBLUetu+TVZ8gsYsCOFoij7ecsHaGSEGA8gAwAAcAAAAHhWNBIAAAAAAAAAAIwCAAAP"
+  "AAAAcAAAAAYAAACsAAAABAAAAMQAAAAAAAAAAAAAAAYAAAD0AAAAAQAAACQBAADcAQAARAEAAN4B"
+  "AADmAQAA6QEAAO8BAAD1AQAA+AEAAP4BAAAOAgAAIgIAADUCAAA4AgAAOwIAAD8CAABDAgAARwIA"
+  "AAEAAAAEAAAABgAAAAcAAAAJAAAACgAAAAIAAAAAAAAAyAEAAAMAAAAAAAAA1AEAAAUAAAABAAAA"
+  "yAEAAAoAAAAFAAAAAAAAAAIAAwAAAAAAAgABAAsAAAACAAEADAAAAAIAAAANAAAAAgACAA4AAAAD"
+  "AAMAAAAAAAIAAAAAAAAAAwAAAAAAAAAIAAAAAAAAAHACAAAAAAAAAQABAAEAAABLAgAABAAAAHAQ"
+  "BQAAAA4ABwAFAAAAAABQAgAABQAAAJAAAwSEUbAQDwAAAAcABQAAAAAAWAIAAAUAAACQAAMEhFGw"
+  "EA8AAAAGAAUAAAAAAGACAAAEAAAAhCCwQLBQDwAJAAUAAAAAAGgCAAAFAAAAgXC7UIGCuyAQAAAA"
+  "AwAAAAEAAAAEAAAAAwAAAAQAAAABAAY8aW5pdD4AAUkABElKSVMABElTSUoAAUoABEpKSVMADkxQ"
+  "cm90b0NvbXBhcmU7ABJMamF2YS9sYW5nL09iamVjdDsAEVByb3RvQ29tcGFyZS5qYXZhAAFTAAFW"
+  "AAJtMQACbTIAAm0zAAJtNAABAAcOAAIDAAAABw4AAwMAAAAHDgAEAwAAAAcOAAUDAAAABw4AAAAB"
+  "BACAgATEAgEA3AIBAPgCAQCUAwEArAMAAAwAAAAAAAAAAQAAAAAAAAABAAAADwAAAHAAAAACAAAA"
+  "BgAAAKwAAAADAAAABAAAAMQAAAAFAAAABgAAAPQAAAAGAAAAAQAAACQBAAABIAAABQAAAEQBAAAB"
+  "EAAAAgAAAMgBAAACIAAADwAAAN4BAAADIAAABQAAAEsCAAAAIAAAAQAAAHACAAAAEAAAAQAAAIwC"
+  "AAA=";
+
+// TODO: test 0 argument methods
+// TODO: make this test simpler and shorter
+TEST(Method, ProtoCompare) {
+  scoped_ptr<DexFile> dex_file(DexFile::OpenBase64(kProtoCompareDex));
+  ASSERT_TRUE(dex_file != NULL);
+
+  Class* klass = dex_file->LoadClass("LProtoCompare;");
+  ASSERT_TRUE(klass != NULL);
+
+  ASSERT_EQ(4U, klass->NumVirtualMethods());
+
+  Method* m1 = klass->GetVirtualMethod(0);
+  ASSERT_STREQ("m1", m1->GetName().data());
+
+  Method* m2 = klass->GetVirtualMethod(1);
+  ASSERT_STREQ("m2", m2->GetName().data());
+
+  Method* m3 = klass->GetVirtualMethod(2);
+  ASSERT_STREQ("m3", m3->GetName().data());
+
+  Method* m4 = klass->GetVirtualMethod(3);
+  ASSERT_STREQ("m4", m4->GetName().data());
+
+  EXPECT_TRUE(m1->HasSameReturnType(m2));
+  EXPECT_TRUE(m2->HasSameReturnType(m1));
+
+  EXPECT_TRUE(m1->HasSameReturnType(m2));
+  EXPECT_TRUE(m2->HasSameReturnType(m1));
+
+  EXPECT_FALSE(m1->HasSameReturnType(m4));
+  EXPECT_FALSE(m4->HasSameReturnType(m1));
+
+  EXPECT_TRUE(m1->HasSameArgumentTypes(m2));
+  EXPECT_TRUE(m2->HasSameArgumentTypes(m1));
+
+  EXPECT_FALSE(m1->HasSameArgumentTypes(m3));
+  EXPECT_FALSE(m3->HasSameArgumentTypes(m1));
+
+  EXPECT_FALSE(m1->HasSameArgumentTypes(m4));
+  EXPECT_FALSE(m4->HasSameArgumentTypes(m1));
+
+  EXPECT_TRUE(m1->HasSamePrototype(m2));
+  EXPECT_TRUE(m2->HasSamePrototype(m1));
+
+  EXPECT_FALSE(m1->HasSamePrototype(m3));
+  EXPECT_FALSE(m3->HasSamePrototype(m1));
+
+  EXPECT_FALSE(m3->HasSamePrototype(m4));
+  EXPECT_FALSE(m4->HasSamePrototype(m3));
+
+  EXPECT_FALSE(m1->HasSameName(m2));
+  EXPECT_FALSE(m1->HasSameNameAndPrototype(m2));
+}
+
+// class ProtoCompare2 {
+//     int m1(short x, int y, long z) { return x + y + (int)z; }
+//     int m2(short x, int y, long z) { return x + y + (int)z; }
+//     int m3(long x, int y, short z) { return (int)x + y + z; }
+//     long m4(long x, int y, short z) { return x + y + z; }
+// }
+static const char kProtoCompare2Dex[] =
+  "ZGV4CjAzNQDVUXj687EpyTTDJZEZPA8dEYnDlm0Ir6YgAwAAcAAAAHhWNBIAAAAAAAAAAIwCAAAP"
+  "AAAAcAAAAAYAAACsAAAABAAAAMQAAAAAAAAAAAAAAAYAAAD0AAAAAQAAACQBAADcAQAARAEAAN4B"
+  "AADmAQAA6QEAAO8BAAD1AQAA+AEAAP4BAAAPAgAAIwIAADcCAAA6AgAAPQIAAEECAABFAgAASQIA"
+  "AAEAAAAEAAAABgAAAAcAAAAJAAAACgAAAAIAAAAAAAAAyAEAAAMAAAAAAAAA1AEAAAUAAAABAAAA"
+  "yAEAAAoAAAAFAAAAAAAAAAIAAwAAAAAAAgABAAsAAAACAAEADAAAAAIAAAANAAAAAgACAA4AAAAD"
+  "AAMAAAAAAAIAAAAAAAAAAwAAAAAAAAAIAAAAAAAAAHICAAAAAAAAAQABAAEAAABNAgAABAAAAHAQ"
+  "BQAAAA4ABwAFAAAAAABSAgAABQAAAJAAAwSEUbAQDwAAAAcABQAAAAAAWgIAAAUAAACQAAMEhFGw"
+  "EA8AAAAGAAUAAAAAAGICAAAEAAAAhCCwQLBQDwAJAAUAAAAAAGoCAAAFAAAAgXC7UIGCuyAQAAAA"
+  "AwAAAAEAAAAEAAAAAwAAAAQAAAABAAY8aW5pdD4AAUkABElKSVMABElTSUoAAUoABEpKSVMAD0xQ"
+  "cm90b0NvbXBhcmUyOwASTGphdmEvbGFuZy9PYmplY3Q7ABJQcm90b0NvbXBhcmUyLmphdmEAAVMA"
+  "AVYAAm0xAAJtMgACbTMAAm00AAEABw4AAgMAAAAHDgADAwAAAAcOAAQDAAAABw4ABQMAAAAHDgAA"
+  "AAEEAICABMQCAQDcAgEA+AIBAJQDAQCsAwwAAAAAAAAAAQAAAAAAAAABAAAADwAAAHAAAAACAAAA"
+  "BgAAAKwAAAADAAAABAAAAMQAAAAFAAAABgAAAPQAAAAGAAAAAQAAACQBAAABIAAABQAAAEQBAAAB"
+  "EAAAAgAAAMgBAAACIAAADwAAAN4BAAADIAAABQAAAE0CAAAAIAAAAQAAAHICAAAAEAAAAQAAAIwC"
+  "AAA=";
+
+TEST(Method, ProtoCompare2) {
+  scoped_ptr<DexFile> dex_file1(DexFile::OpenBase64(kProtoCompareDex));
+  ASSERT_TRUE(dex_file1 != NULL);
+  scoped_ptr<DexFile> dex_file2(DexFile::OpenBase64(kProtoCompare2Dex));
+  ASSERT_TRUE(dex_file2 != NULL);
+
+  Class* klass1 = dex_file1->LoadClass("LProtoCompare;");
+  ASSERT_TRUE(klass1 != NULL);
+  Class* klass2 = dex_file2->LoadClass("LProtoCompare2;");
+  ASSERT_TRUE(klass2 != NULL);
+
+  Method* m1_1 = klass1->GetVirtualMethod(0);
+  ASSERT_STREQ("m1", m1_1->GetName().data());
+  Method* m2_1 = klass1->GetVirtualMethod(1);
+  ASSERT_STREQ("m2", m2_1->GetName().data());
+  Method* m3_1 = klass1->GetVirtualMethod(2);
+  ASSERT_STREQ("m3", m3_1->GetName().data());
+  Method* m4_1 = klass1->GetVirtualMethod(3);
+  ASSERT_STREQ("m4", m4_1->GetName().data());
+
+  Method* m1_2 = klass2->GetVirtualMethod(0);
+  ASSERT_STREQ("m1", m1_2->GetName().data());
+  Method* m2_2 = klass2->GetVirtualMethod(1);
+  ASSERT_STREQ("m2", m2_2->GetName().data());
+  Method* m3_2 = klass2->GetVirtualMethod(2);
+  ASSERT_STREQ("m3", m3_2->GetName().data());
+  Method* m4_2 = klass2->GetVirtualMethod(3);
+  ASSERT_STREQ("m4", m4_2->GetName().data());
+
+  EXPECT_TRUE(m1_1->HasSameNameAndPrototype(m1_2));
+  EXPECT_TRUE(m1_2->HasSameNameAndPrototype(m1_1));
+
+  EXPECT_TRUE(m2_1->HasSameNameAndPrototype(m2_2));
+  EXPECT_TRUE(m2_2->HasSameNameAndPrototype(m2_1));
+
+  EXPECT_TRUE(m3_1->HasSameNameAndPrototype(m3_2));
+  EXPECT_TRUE(m3_2->HasSameNameAndPrototype(m3_1));
+
+  EXPECT_TRUE(m4_1->HasSameNameAndPrototype(m4_2));
+  EXPECT_TRUE(m4_2->HasSameNameAndPrototype(m4_1));
+}
+
 }  // namespace art