Revert "[clangd] Migrate last tweak tests to TweakTesting.h and remove old helpers. NFC"

This reverts commit 8f85685b5c, which
breaks on old gcc that have the macro + raw strings bug.

llvm-svn: 370262

clang-tools-extra/clangd/unittests/TweakTests.cpp

@@ -23,6 +23,8 @@
 #include "gtest/gtest.h"
 #include <cassert>
 
+using llvm::Failed;
+using llvm::Succeeded;
 using ::testing::AllOf;
 using ::testing::HasSubstr;
 using ::testing::StartsWith;
@@ -31,6 +33,100 @@ namespace clang {
 namespace clangd {
 namespace {
 
+// FIXME(sammccall): migrate the rest of the tests to use TweakTesting.h and
+// remove these helpers.
+std::string markRange(llvm::StringRef Code, Range R) {
+  size_t Begin = llvm::cantFail(positionToOffset(Code, R.start));
+  size_t End = llvm::cantFail(positionToOffset(Code, R.end));
+  assert(Begin <= End);
+  if (Begin == End) // Mark a single point.
+    return (Code.substr(0, Begin) + "^" + Code.substr(Begin)).str();
+  // Mark a range.
+  return (Code.substr(0, Begin) + "[[" + Code.substr(Begin, End - Begin) +
+          "]]" + Code.substr(End))
+      .str();
+}
+
+void checkAvailable(StringRef ID, llvm::StringRef Input, bool Available) {
+  Annotations Code(Input);
+  ASSERT_TRUE(0 < Code.points().size() || 0 < Code.ranges().size())
+      << "no points of interest specified";
+  TestTU TU;
+  TU.Filename = "foo.cpp";
+  TU.Code = Code.code();
+
+  ParsedAST AST = TU.build();
+
+  auto CheckOver = [&](Range Selection) {
+    unsigned Begin = cantFail(positionToOffset(Code.code(), Selection.start));
+    unsigned End = cantFail(positionToOffset(Code.code(), Selection.end));
+    auto T = prepareTweak(ID, Tweak::Selection(AST, Begin, End));
+    if (Available)
+      EXPECT_THAT_EXPECTED(T, Succeeded())
+          << "code is " << markRange(Code.code(), Selection);
+    else
+      EXPECT_THAT_EXPECTED(T, Failed())
+          << "code is " << markRange(Code.code(), Selection);
+  };
+  for (auto P : Code.points())
+    CheckOver(Range{P, P});
+  for (auto R : Code.ranges())
+    CheckOver(R);
+}
+
+/// Checks action is available at every point and range marked in \p Input.
+void checkAvailable(StringRef ID, llvm::StringRef Input) {
+  return checkAvailable(ID, Input, /*Available=*/true);
+}
+
+/// Same as checkAvailable, but checks the action is not available.
+void checkNotAvailable(StringRef ID, llvm::StringRef Input) {
+  return checkAvailable(ID, Input, /*Available=*/false);
+}
+
+llvm::Expected<Tweak::Effect> apply(StringRef ID, llvm::StringRef Input) {
+  Annotations Code(Input);
+  Range SelectionRng;
+  if (Code.points().size() != 0) {
+    assert(Code.ranges().size() == 0 &&
+           "both a cursor point and a selection range were specified");
+    SelectionRng = Range{Code.point(), Code.point()};
+  } else {
+    SelectionRng = Code.range();
+  }
+  TestTU TU;
+  TU.Filename = "foo.cpp";
+  TU.Code = Code.code();
+
+  ParsedAST AST = TU.build();
+  unsigned Begin = cantFail(positionToOffset(Code.code(), SelectionRng.start));
+  unsigned End = cantFail(positionToOffset(Code.code(), SelectionRng.end));
+  Tweak::Selection S(AST, Begin, End);
+
+  auto T = prepareTweak(ID, S);
+  if (!T)
+    return T.takeError();
+  return (*T)->apply(S);
+}
+
+llvm::Expected<std::string> applyEdit(StringRef ID, llvm::StringRef Input) {
+  auto Effect = apply(ID, Input);
+  if (!Effect)
+    return Effect.takeError();
+  if (!Effect->ApplyEdit)
+    return llvm::createStringError(llvm::inconvertibleErrorCode(),
+                                   "No replacements");
+  Annotations Code(Input);
+  return applyAllReplacements(Code.code(), *Effect->ApplyEdit);
+}
+
+void checkTransform(llvm::StringRef ID, llvm::StringRef Input,
+                    std::string Output) {
+  auto Result = applyEdit(ID, Input);
+  ASSERT_TRUE(bool(Result)) << llvm::toString(Result.takeError()) << Input;
+  EXPECT_EQ(Output, std::string(*Result)) << Input;
+}
+
 TWEAK_TEST(SwapIfBranches);
 TEST_F(SwapIfBranchesTest, Test) {
   Context = Function;
@@ -119,9 +215,9 @@ TEST_F(DumpRecordLayoutTest, Test) {
               AllOf(StartsWith("message:"), HasSubstr("0 |   int x")));
 }
 
-TWEAK_TEST(ExtractVariable);
-TEST_F(ExtractVariableTest, Test) {
-  EXPECT_AVAILABLE(R"cpp(
+TEST(TweaksTest, ExtractVariable) {
+  llvm::StringLiteral ID = "ExtractVariable";
+  checkAvailable(ID, R"cpp(
     int xyz(int a = 1) {
       struct T {
         int bar(int a = 1);
@@ -161,14 +257,14 @@ TEST_F(ExtractVariableTest, Test) {
     }
   )cpp");
   // Should not crash.
-  EXPECT_UNAVAILABLE(R"cpp(
+  checkNotAvailable(ID, R"cpp(
     template<typename T, typename ...Args>
     struct Test<T, Args...> {
     Test(const T &v) :val[[(^]]) {}
       T val;
     };
   )cpp");
-  EXPECT_UNAVAILABLE(R"cpp(
+  checkNotAvailable(ID, R"cpp(
     int xyz(int a = [[1]]) {
       struct T {
         int bar(int a = [[1]]);
@@ -386,35 +482,38 @@ TEST_F(ExtractVariableTest, Test) {
                  })cpp"},
       };
   for (const auto &IO : InputOutputs) {
-    EXPECT_EQ(IO.second, apply(IO.first)) << IO.first;
+    checkTransform(ID, IO.first, IO.second);
   }
 }
 
-TWEAK_TEST(AnnotateHighlightings);
-TEST_F(AnnotateHighlightingsTest, Test) {
-  EXPECT_AVAILABLE("^vo^id^ ^f(^) {^}^"); // available everywhere.
-  EXPECT_AVAILABLE("[[int a; int b;]]");
-  EXPECT_EQ("/* storage.type.primitive.cpp */void "
-            "/* entity.name.function.cpp */f() {}",
-            apply("void ^f() {}"));
+TEST(TweaksTest, AnnotateHighlightings) {
+  llvm::StringLiteral ID = "AnnotateHighlightings";
+  checkAvailable(ID, "^vo^id^ ^f(^) {^}^"); // available everywhere.
+  checkAvailable(ID, "[[int a; int b;]]");
+  const char *Input = "void ^f() {}";
+  const char *Output = "/* storage.type.primitive.cpp */void /* entity.name.function.cpp */f() {}";
+  checkTransform(ID, Input, Output);
 
-  EXPECT_EQ(apply(R"cpp(
-      [[void f1();
-      void f2();]]
-  )cpp"),
+  checkTransform(ID,
   R"cpp(
-      /* storage.type.primitive.cpp */void /* entity.name.function.cpp */f1();
-      /* storage.type.primitive.cpp */void /* entity.name.function.cpp */f2();
-  )cpp");
+[[void f1();
+void f2();]]
+)cpp",
+  R"cpp(
+/* storage.type.primitive.cpp */void /* entity.name.function.cpp */f1();
+/* storage.type.primitive.cpp */void /* entity.name.function.cpp */f2();
+)cpp");
 
-  EXPECT_EQ(apply(R"cpp(
-      void f1();
-      void f2() {^};
-  )cpp"),
+   checkTransform(ID,
   R"cpp(
-      void f1();
-      /* storage.type.primitive.cpp */void /* entity.name.function.cpp */f2() {};
-  )cpp");
+void f1();
+void f2() {^};
+)cpp",
+
+  R"cpp(
+void f1();
+/* storage.type.primitive.cpp */void /* entity.name.function.cpp */f2() {};
+)cpp");
 }
 
 TWEAK_TEST(ExpandMacro);