mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-25 06:10:14 +01:00
Chandler Carruth
2ddf0936fd
This library manages buffers of source code, either in-memory or mapped from the filesystem. At the moment it is a bit simplistic and assumes `mmap` is available in its implementation details. We should make this more portable in the future, but this is currently just a direct copy from the toolchain repository.
60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "source/source_buffer.h"
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#include "gtest/gtest.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/raw_ostream.h"
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namespace Carbon {
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namespace {
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TEST(SourceBufferTest, StringRep) {
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SourceBuffer buffer =
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SourceBuffer::CreateFromText(llvm::Twine("Hello") + " World");
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EXPECT_EQ("/text", buffer.Filename());
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EXPECT_EQ("Hello World", buffer.Text());
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// Give a custom filename.
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auto buffer2 = SourceBuffer::CreateFromText("Hello World Again!", "/custom/text");
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EXPECT_EQ("/custom/text", buffer2.Filename());
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EXPECT_EQ("Hello World Again!", buffer2.Text());
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}
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auto CreateTestFile(llvm::StringRef text) -> std::string {
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int fd = -1;
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llvm::SmallString<1024> path;
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auto error_code = llvm::sys::fs::createTemporaryFile("test_file", ".txt", fd, path);
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if (error_code) {
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llvm::report_fatal_error(llvm::Twine("Failed to create temporary file: ") +
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error_code.message());
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}
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llvm::raw_fd_ostream out_stream(fd, /*shouldClose=*/true);
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out_stream << text;
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out_stream.close();
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return path.str().str();
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}
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TEST(SourceBufferTest, FileRep) {
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auto test_file_path = CreateTestFile("Hello World");
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auto expected_buffer = SourceBuffer::CreateFromFile(test_file_path);
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ASSERT_TRUE(static_cast<bool>(expected_buffer))
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<< "Error message: " << expected_buffer.takeError();
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SourceBuffer& buffer = *expected_buffer;
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EXPECT_EQ(test_file_path, buffer.Filename());
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EXPECT_EQ("Hello World", buffer.Text());
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}
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} // namespace
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} // namespace Carbon
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