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76 lines
2.2 KiB
C++
76 lines
2.2 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 "toolchain/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::Testing {
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namespace {
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TEST(SourceBufferTest, StringRep) {
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auto buffer = 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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}
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TEST(SourceBufferText, StringRepWithFilename) {
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// Give a custom filename.
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auto buffer =
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SourceBuffer::CreateFromText("Hello World Again!", "/custom/text");
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EXPECT_EQ("/custom/text", buffer->filename());
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EXPECT_EQ("Hello World Again!", buffer->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 =
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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: " << toString(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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TEST(SourceBufferTest, FileRepEmpty) {
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auto test_file_path = CreateTestFile("");
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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: " << toString(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("", buffer.text());
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}
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} // namespace
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} // namespace Carbon::Testing
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