Add gTest unittests to clang, and write the first one.

This is the Makefile version only; the cmake implementation is coming soon.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124777 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 122 insertions, 0 deletions

diff --git a/unittests/Frontend/FrontendActionTest.cpp b/unittests/Frontend/FrontendActionTest.cpp
new file mode 100644
index 0000000000..49a63983f0
--- /dev/null
+++ b/unittests/Frontend/FrontendActionTest.cpp
@@ -0,0 +1,76 @@
+//===- unittests/Frontend/FrontendActionTest.cpp - FrontendAction tests ---===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/AST/RecursiveASTVisitor.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Frontend/CompilerInvocation.h"
+#include "clang/Frontend/FrontendAction.h"
+
+#include "llvm/ADT/Triple.h"
+#include "llvm/LLVMContext.h"
+#include "llvm/Support/MemoryBuffer.h"
+
+#include "gtest/gtest.h"
+
+using namespace llvm;
+using namespace clang;
+
+namespace {
+
+class TestASTFrontendAction : public ASTFrontendAction {
+public:
+  std::vector<std::string> decl_names;
+
+  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                         StringRef InFile) {
+    return new Visitor(decl_names);
+  }
+
+private:
+  class Visitor : public ASTConsumer, public RecursiveASTVisitor<Visitor> {
+  public:
+    Visitor(std::vector<std::string> &decl_names) : decl_names_(decl_names) {}
+
+    virtual void HandleTranslationUnit(ASTContext &context) {
+      TraverseDecl(context.getTranslationUnitDecl());
+    }
+
+    virtual bool VisitNamedDecl(NamedDecl *Decl) {
+      decl_names_.push_back(Decl->getQualifiedNameAsString());
+      return true;
+    }
+
+  private:
+    std::vector<std::string> &decl_names_;
+  };
+};
+
+TEST(ASTFrontendAction, Sanity) {
+  CompilerInvocation *invocation = new CompilerInvocation;
+  invocation->getPreprocessorOpts().addRemappedFile(
+    "test.cc", MemoryBuffer::getMemBuffer("int main() { float x; }"));
+  invocation->getFrontendOpts().Inputs.push_back(
+    std::make_pair(IK_CXX, "test.cc"));
+  invocation->getFrontendOpts().ProgramAction = frontend::ParseSyntaxOnly;
+  invocation->getTargetOpts().Triple = "i386-unknown-linux-gnu";
+  CompilerInstance compiler;
+  compiler.setLLVMContext(new LLVMContext);
+  compiler.setInvocation(invocation);
+  compiler.createDiagnostics(0, NULL);
+
+  TestASTFrontendAction test_action;
+  ASSERT_TRUE(compiler.ExecuteAction(test_action));
+  ASSERT_EQ(3U, test_action.decl_names.size());
+  EXPECT_EQ("__builtin_va_list", test_action.decl_names[0]);
+  EXPECT_EQ("main", test_action.decl_names[1]);
+  EXPECT_EQ("x", test_action.decl_names[2]);
+}
+
+} // anonymous namespace
diff --git a/unittests/Frontend/Makefile b/unittests/Frontend/Makefile
new file mode 100644
index 0000000000..1ac0dd64a5
--- /dev/null
+++ b/unittests/Frontend/Makefile
@@ -0,0 +1,19 @@
+##===- unittests/ADT/Makefile ------------------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+CLANG_LEVEL = ../..
+TESTNAME = Frontend
+LINK_COMPONENTS := core support mc
+USEDLIBS = clangFrontendTool.a clangFrontend.a clangDriver.a \
+           clangSerialization.a clangCodeGen.a clangParse.a clangSema.a \
+           clangStaticAnalyzerCheckers.a clangStaticAnalyzerCore.a \
+           clangAnalysis.a clangIndex.a clangRewrite.a \
+           clangAST.a clangLex.a clangBasic.a
+
+include $(CLANG_LEVEL)/unittests/Makefile
diff --git a/unittests/Makefile b/unittests/Makefile
new file mode 100644
index 0000000000..bf64f0611b
--- /dev/null
+++ b/unittests/Makefile
@@ -0,0 +1,27 @@
+##===- unittests/Makefile ----------------------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+# If CLANG_LEVEL is not set, then we are the top-level Makefile. Otherwise, we
+# are being included from a subdirectory makefile.
+
+ifndef CLANG_LEVEL
+
+IS_UNITTEST_LEVEL := 1
+CLANG_LEVEL := ..
+PARALLEL_DIRS = Frontend
+
+endif  # CLANG_LEVEL
+
+include $(CLANG_LEVEL)/Makefile
+
+ifndef IS_UNITTEST_LEVEL
+
+include $(LLVM_SRC_ROOT)/unittests/Makefile.unittest
+
+endif  # IS_UNITTEST_LEVEL