[Modules][Test][NFC] Fix -Wsign-compare in clang/unittests/Lex/Module…

…DeclStateTest.cpp

In file included from /data/jiefu/llvm-project/clang/unittests/Lex/ModuleDeclStateTest.cpp:22:
/data/jiefu/llvm-project/third-party/unittest/googletest/include/gtest/gtest.h:1526:11: error: comparison of integers of different signs: 'const unsigned long' and 'const int' [-Werror,-Wsign-compare]
  if (lhs == rhs) {
      ~~~ ^  ~~~
/data/jiefu/llvm-project/third-party/unittest/googletest/include/gtest/gtest.h:1553:12: note: in instantiation of function template specialization 'testing::internal::CmpHelperEQ<unsigned long, int>' requested here
    return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
           ^
/data/jiefu/llvm-project/clang/unittests/Lex/ModuleDeclStateTest.cpp:124:3: note: in instantiation of function template specialization 'testing::internal::EqHelper::Compare<unsigned long, int, nullptr>' requested here
  EXPECT_EQ(Callback->importNamedModuleNum(), 0);
  ^
/data/jiefu/llvm-project/third-party/unittest/googletest/include/gtest/gtest.h:2027:54: note: expanded from macro 'EXPECT_EQ'
  EXPECT_PRED_FORMAT2(::testing::internal::EqHelper::Compare, val1, val2)
                                                     ^
1 error generated.

clang/unittests/Lex/ModuleDeclStateTest.cpp

@@ -121,7 +121,7 @@ export module foo;
 
   auto *Callback =
       static_cast<CheckNamedModuleImportingCB *>(PP->getPPCallbacks());
-  EXPECT_EQ(Callback->importNamedModuleNum(), 0);
+  EXPECT_EQ(Callback->importNamedModuleNum(), (size_t)0);
   EXPECT_TRUE(PP->isInNamedModule());
   EXPECT_TRUE(PP->isInNamedInterfaceUnit());
   EXPECT_FALSE(PP->isInImplementationUnit());
@@ -140,7 +140,7 @@ module foo;
 
   auto *Callback =
       static_cast<CheckNamedModuleImportingCB *>(PP->getPPCallbacks());
-  EXPECT_EQ(Callback->importNamedModuleNum(), 0);
+  EXPECT_EQ(Callback->importNamedModuleNum(), (size_t)0);
   EXPECT_TRUE(PP->isInNamedModule());
   EXPECT_FALSE(PP->isInNamedInterfaceUnit());
   EXPECT_TRUE(PP->isInImplementationUnit());
@@ -159,7 +159,7 @@ module foo:part;
 
   auto *Callback =
       static_cast<CheckNamedModuleImportingCB *>(PP->getPPCallbacks());
-  EXPECT_EQ(Callback->importNamedModuleNum(), 0);
+  EXPECT_EQ(Callback->importNamedModuleNum(), (size_t)0);
   EXPECT_TRUE(PP->isInNamedModule());
   EXPECT_FALSE(PP->isInNamedInterfaceUnit());
   EXPECT_FALSE(PP->isInImplementationUnit());
@@ -178,7 +178,7 @@ export module foo:part;
 
   auto *Callback =
       static_cast<CheckNamedModuleImportingCB *>(PP->getPPCallbacks());
-  EXPECT_EQ(Callback->importNamedModuleNum(), 0);
+  EXPECT_EQ(Callback->importNamedModuleNum(), (size_t)0);
   EXPECT_TRUE(PP->isInNamedModule());
   EXPECT_TRUE(PP->isInNamedInterfaceUnit());
   EXPECT_FALSE(PP->isInImplementationUnit());
@@ -197,7 +197,7 @@ export module foo.dot:part.dot;
 
   auto *Callback =
       static_cast<CheckNamedModuleImportingCB *>(PP->getPPCallbacks());
-  EXPECT_EQ(Callback->importNamedModuleNum(), 0);
+  EXPECT_EQ(Callback->importNamedModuleNum(), (size_t)0);
   EXPECT_TRUE(PP->isInNamedModule());
   EXPECT_TRUE(PP->isInNamedInterfaceUnit());
   EXPECT_FALSE(PP->isInImplementationUnit());
@@ -216,7 +216,7 @@ TEST_F(ModuleDeclStateTest, NotModule) {
 
   auto *Callback =
       static_cast<CheckNamedModuleImportingCB *>(PP->getPPCallbacks());
-  EXPECT_EQ(Callback->importNamedModuleNum(), 0);
+  EXPECT_EQ(Callback->importNamedModuleNum(), (size_t)0);
   EXPECT_FALSE(PP->isInNamedModule());
   EXPECT_FALSE(PP->isInNamedInterfaceUnit());
   EXPECT_FALSE(PP->isInImplementationUnit());
@@ -242,7 +242,7 @@ import :another;
 
   auto *Callback =
       static_cast<CheckNamedModuleImportingCB *>(PP->getPPCallbacks());
-  EXPECT_EQ(Callback->importNamedModuleNum(), 2);
+  EXPECT_EQ(Callback->importNamedModuleNum(), (size_t)2);
   EXPECT_TRUE(PP->isInNamedModule());
   EXPECT_TRUE(PP->isInNamedInterfaceUnit());
   EXPECT_FALSE(PP->isInImplementationUnit());
@@ -269,7 +269,7 @@ import :another;
 
   auto *Callback =
       static_cast<CheckNamedModuleImportingCB *>(PP->getPPCallbacks());
-  EXPECT_EQ(Callback->importNamedModuleNum(), 2);
+  EXPECT_EQ(Callback->importNamedModuleNum(), (size_t)2);
   EXPECT_TRUE(PP->isInNamedModule());
   EXPECT_TRUE(PP->isInNamedInterfaceUnit());
   EXPECT_FALSE(PP->isInImplementationUnit());
@@ -295,7 +295,7 @@ import :another;
 
   auto *Callback =
       static_cast<CheckNamedModuleImportingCB *>(PP->getPPCallbacks());
-  EXPECT_EQ(Callback->importNamedModuleNum(), 1);
+  EXPECT_EQ(Callback->importNamedModuleNum(), (size_t)1);
   EXPECT_FALSE(PP->isInNamedModule());
   EXPECT_FALSE(PP->isInNamedInterfaceUnit());
   EXPECT_FALSE(PP->isInImplementationUnit());
@@ -315,7 +315,7 @@ TEST_F(ModuleDeclStateTest, ImportAClangNamedModule) {
 
   auto *Callback =
       static_cast<CheckNamedModuleImportingCB *>(PP->getPPCallbacks());
-  EXPECT_EQ(Callback->importNamedModuleNum(), 1);
+  EXPECT_EQ(Callback->importNamedModuleNum(), (size_t)1);
   EXPECT_FALSE(PP->isInNamedModule());
   EXPECT_FALSE(PP->isInNamedInterfaceUnit());
   EXPECT_FALSE(PP->isInImplementationUnit());
@@ -339,7 +339,7 @@ import M2;
 
   auto *Callback =
       static_cast<CheckNamedModuleImportingCB *>(PP->getPPCallbacks());
-  EXPECT_EQ(Callback->importNamedModuleNum(), 4);
+  EXPECT_EQ(Callback->importNamedModuleNum(), (size_t)4);
   EXPECT_FALSE(PP->isInNamedModule());
   EXPECT_FALSE(PP->isInNamedInterfaceUnit());
   EXPECT_FALSE(PP->isInImplementationUnit());