1 //===- unittest/Tooling/RewriterTest.cpp ----------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "RewriterTestContext.h"
10 #include "clang/Tooling/Core/Replacement.h"
11 #include "gtest/gtest.h"
12
13 namespace clang {
14 namespace tooling {
15 namespace {
16
TEST(Rewriter,OverwritesChangedFiles)17 TEST(Rewriter, OverwritesChangedFiles) {
18 RewriterTestContext Context;
19 FileID ID = Context.createOnDiskFile("t.cpp", "line1\nline2\nline3\nline4");
20 Context.Rewrite.ReplaceText(Context.getLocation(ID, 2, 1), 5, "replaced");
21 EXPECT_FALSE(Context.Rewrite.overwriteChangedFiles());
22 EXPECT_EQ("line1\nreplaced\nline3\nline4",
23 Context.getFileContentFromDisk("t.cpp"));
24 }
25
TEST(Rewriter,ContinuesOverwritingFilesOnError)26 TEST(Rewriter, ContinuesOverwritingFilesOnError) {
27 RewriterTestContext Context;
28 FileID FailingID = Context.createInMemoryFile("invalid/failing.cpp", "test");
29 Context.Rewrite.ReplaceText(Context.getLocation(FailingID, 1, 2), 1, "other");
30 FileID WorkingID = Context.createOnDiskFile(
31 "working.cpp", "line1\nline2\nline3\nline4");
32 Context.Rewrite.ReplaceText(Context.getLocation(WorkingID, 2, 1), 5,
33 "replaced");
34 EXPECT_TRUE(Context.Rewrite.overwriteChangedFiles());
35 EXPECT_EQ("line1\nreplaced\nline3\nline4",
36 Context.getFileContentFromDisk("working.cpp"));
37 }
38
TEST(Rewriter,AdjacentInsertAndDelete)39 TEST(Rewriter, AdjacentInsertAndDelete) {
40 Replacements Replaces;
41 auto Err = Replaces.add(Replacement("<file>", 6, 6, ""));
42 EXPECT_TRUE(!Err);
43 Replaces =
44 Replaces.merge(Replacements(Replacement("<file>", 6, 0, "replaced\n")));
45
46 auto Rewritten = applyAllReplacements("line1\nline2\nline3\nline4", Replaces);
47 EXPECT_TRUE(static_cast<bool>(Rewritten));
48 EXPECT_EQ("line1\nreplaced\nline3\nline4", *Rewritten);
49 }
50
51 } // end namespace
52 } // end namespace tooling
53 } // end namespace clang
54