FixItTest.cpp
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//===- unittest/Tooling/FixitTest.cpp ------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "TestVisitor.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Tooling/FixIt.h"
using namespace clang;
using tooling::fixit::getText;
using tooling::fixit::createRemoval;
using tooling::fixit::createReplacement;
namespace {
struct CallsVisitor : TestVisitor<CallsVisitor> {
bool VisitCallExpr(CallExpr *Expr) {
OnCall(Expr, Context);
return true;
}
std::function<void(CallExpr *, ASTContext *Context)> OnCall;
};
std::string LocationToString(SourceLocation Loc, ASTContext *Context) {
return Loc.printToString(Context->getSourceManager());
}
TEST(FixItTest, getText) {
CallsVisitor Visitor;
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
EXPECT_EQ("foo(x, y)", getText(*CE, *Context));
EXPECT_EQ("foo(x, y)", getText(CE->getSourceRange(), *Context));
Expr *P0 = CE->getArg(0);
Expr *P1 = CE->getArg(1);
EXPECT_EQ("x", getText(*P0, *Context));
EXPECT_EQ("y", getText(*P1, *Context));
};
Visitor.runOver("void foo(int x, int y) { foo(x, y); }");
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
EXPECT_EQ("APPLY(foo, x, y)", getText(*CE, *Context));
};
Visitor.runOver("#define APPLY(f, x, y) f(x, y)\n"
"void foo(int x, int y) { APPLY(foo, x, y); }");
}
TEST(FixItTest, getTextWithMacro) {
CallsVisitor Visitor;
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
EXPECT_EQ("F OO", getText(*CE, *Context));
Expr *P0 = CE->getArg(0);
Expr *P1 = CE->getArg(1);
EXPECT_EQ("", getText(*P0, *Context));
EXPECT_EQ("", getText(*P1, *Context));
};
Visitor.runOver("#define F foo(\n"
"#define OO x, y)\n"
"void foo(int x, int y) { F OO ; }");
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
EXPECT_EQ("", getText(*CE, *Context));
Expr *P0 = CE->getArg(0);
Expr *P1 = CE->getArg(1);
EXPECT_EQ("x", getText(*P0, *Context));
EXPECT_EQ("y", getText(*P1, *Context));
};
Visitor.runOver("#define FOO(x, y) (void)x; (void)y; foo(x, y);\n"
"void foo(int x, int y) { FOO(x,y) }");
}
TEST(FixItTest, createRemoval) {
CallsVisitor Visitor;
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
FixItHint Hint = createRemoval(*CE);
EXPECT_EQ("foo(x, y)", getText(Hint.RemoveRange.getAsRange(), *Context));
EXPECT_TRUE(Hint.InsertFromRange.isInvalid());
EXPECT_TRUE(Hint.CodeToInsert.empty());
Expr *P0 = CE->getArg(0);
FixItHint Hint0 = createRemoval(*P0);
EXPECT_EQ("x", getText(Hint0.RemoveRange.getAsRange(), *Context));
EXPECT_TRUE(Hint0.InsertFromRange.isInvalid());
EXPECT_TRUE(Hint0.CodeToInsert.empty());
Expr *P1 = CE->getArg(1);
FixItHint Hint1 = createRemoval(*P1);
EXPECT_EQ("y", getText(Hint1.RemoveRange.getAsRange(), *Context));
EXPECT_TRUE(Hint1.InsertFromRange.isInvalid());
EXPECT_TRUE(Hint1.CodeToInsert.empty());
};
Visitor.runOver("void foo(int x, int y) { foo(x, y); }");
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
Expr *P0 = CE->getArg(0);
FixItHint Hint0 = createRemoval(*P0);
EXPECT_EQ("x + y", getText(Hint0.RemoveRange.getAsRange(), *Context));
Expr *P1 = CE->getArg(1);
FixItHint Hint1 = createRemoval(*P1);
EXPECT_EQ("y + x", getText(Hint1.RemoveRange.getAsRange(), *Context));
};
Visitor.runOver("void foo(int x, int y) { foo(x + y, y + x); }");
}
TEST(FixItTest, createRemovalWithMacro) {
CallsVisitor Visitor;
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
FixItHint Hint = createRemoval(*CE);
EXPECT_EQ("FOO", getText(Hint.RemoveRange.getAsRange(), *Context));
EXPECT_TRUE(Hint.InsertFromRange.isInvalid());
EXPECT_TRUE(Hint.CodeToInsert.empty());
Expr *P0 = CE->getArg(0);
FixItHint Hint0 = createRemoval(*P0);
EXPECT_EQ("input.cc:2:26 <Spelling=input.cc:1:17>",
LocationToString(Hint0.RemoveRange.getBegin(), Context));
EXPECT_EQ("input.cc:2:26 <Spelling=input.cc:1:17>",
LocationToString(Hint0.RemoveRange.getEnd(), Context));
EXPECT_TRUE(Hint0.InsertFromRange.isInvalid());
EXPECT_TRUE(Hint0.CodeToInsert.empty());
Expr *P1 = CE->getArg(1);
FixItHint Hint1 = createRemoval(*P1);
EXPECT_EQ("input.cc:2:26 <Spelling=input.cc:1:20>",
LocationToString(Hint1.RemoveRange.getBegin(), Context));
EXPECT_EQ("input.cc:2:26 <Spelling=input.cc:1:20>",
LocationToString(Hint1.RemoveRange.getEnd(), Context));
EXPECT_TRUE(Hint1.InsertFromRange.isInvalid());
EXPECT_TRUE(Hint1.CodeToInsert.empty());
};
Visitor.runOver("#define FOO foo(1, 1)\n"
"void foo(int x, int y) { FOO; }");
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
FixItHint Hint = createRemoval(*CE);
EXPECT_EQ("input.cc:2:26 <Spelling=input.cc:1:37>",
LocationToString(Hint.RemoveRange.getBegin(), Context));
EXPECT_EQ("input.cc:2:26 <Spelling=input.cc:1:45>",
LocationToString(Hint.RemoveRange.getEnd(), Context));
EXPECT_TRUE(Hint.InsertFromRange.isInvalid());
EXPECT_TRUE(Hint.CodeToInsert.empty());
};
Visitor.runOver("#define FOO(x, y) (void)x; (void)y; foo(x, y);\n"
"void foo(int x, int y) { FOO(x,y) }");
}
TEST(FixItTest, createReplacement) {
CallsVisitor Visitor;
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
Expr *P0 = CE->getArg(0);
Expr *P1 = CE->getArg(1);
FixItHint Hint0 = createReplacement(*P0, *P1, *Context);
FixItHint Hint1 = createReplacement(*P1, *P0, *Context);
// Validate Hint0 fields.
EXPECT_EQ("x", getText(Hint0.RemoveRange.getAsRange(), *Context));
EXPECT_TRUE(Hint0.InsertFromRange.isInvalid());
EXPECT_EQ(Hint0.CodeToInsert, "y");
// Validate Hint1 fields.
EXPECT_EQ("y", getText(Hint1.RemoveRange.getAsRange(), *Context));
EXPECT_TRUE(Hint1.InsertFromRange.isInvalid());
EXPECT_EQ(Hint1.CodeToInsert, "x");
};
Visitor.runOver("void foo(int x, int y) { foo(x, y); }");
Visitor.runOver("#define APPLY(f, x, y) f(x, y)\n"
"void foo(int x, int y) { APPLY(foo, x, y); }");
Visitor.runOver("#define APPLY(f, P) f(P)\n"
"#define PAIR(x, y) x, y\n"
"void foo(int x, int y) { APPLY(foo, PAIR(x, y)); }\n");
}
TEST(FixItTest, createReplacementWithMacro) {
CallsVisitor Visitor;
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
Expr *P0 = CE->getArg(0);
Expr *P1 = CE->getArg(1);
FixItHint Hint = createReplacement(*P0, *P1, *Context);
EXPECT_EQ("input.cc:2:26 <Spelling=input.cc:1:17>",
LocationToString(Hint.RemoveRange.getBegin(), Context));
EXPECT_EQ("input.cc:2:26 <Spelling=input.cc:1:17>",
LocationToString(Hint.RemoveRange.getEnd(), Context));
EXPECT_TRUE(Hint.InsertFromRange.isInvalid());
EXPECT_TRUE(Hint.CodeToInsert.empty());
};
Visitor.runOver("#define FOO foo(1, 1)\n"
"void foo(int x, int y) { FOO; }");
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
Expr *P0 = CE->getArg(0);
Expr *P1 = CE->getArg(1);
FixItHint Hint = createReplacement(*P0, *P1, *Context);
EXPECT_EQ("input.cc:2:26 <Spelling=input.cc:2:30>",
LocationToString(Hint.RemoveRange.getBegin(), Context));
EXPECT_EQ("input.cc:2:26 <Spelling=input.cc:2:30>",
LocationToString(Hint.RemoveRange.getEnd(), Context));
EXPECT_TRUE(Hint.InsertFromRange.isInvalid());
EXPECT_EQ("y", Hint.CodeToInsert);
};
Visitor.runOver("#define FOO(x, y) (void)x; (void)y; foo(x, y);\n"
"void foo(int x, int y) { FOO(x,y) }");
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
Expr *P0 = CE->getArg(0);
Expr *P1 = CE->getArg(1);
FixItHint Hint = createReplacement(*P0, *P1, *Context);
EXPECT_EQ("x + y", getText(Hint.RemoveRange.getAsRange(), *Context));
EXPECT_TRUE(Hint.InsertFromRange.isInvalid());
EXPECT_EQ("y + x", Hint.CodeToInsert);
};
Visitor.runOver("void foo(int x, int y) { foo(x + y, y + x); }");
}
} // end anonymous namespace