84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
//===-- FileCacheTests.cpp ------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "support/FileCache.h"
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#include "TestFS.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include <atomic>
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#include <chrono>
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namespace clang {
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namespace clangd {
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namespace config {
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namespace {
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class TestCache : public FileCache {
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MockFS FS;
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mutable std::string Value;
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public:
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TestCache() : FileCache(testPath("foo.cc")) {}
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void setContents(const char *C) {
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if (C)
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FS.Files[testPath("foo.cc")] = C;
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else
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FS.Files.erase(testPath("foo.cc"));
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}
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std::string get(std::chrono::steady_clock::time_point FreshTime,
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bool ExpectParse) const {
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bool GotParse = false;
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bool GotRead;
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std::string Result;
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read(
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FS, FreshTime,
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[&](llvm::Optional<llvm::StringRef> Data) {
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GotParse = true;
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Value = Data.value_or("").str();
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},
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[&]() {
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GotRead = true;
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Result = Value;
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});
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EXPECT_EQ(GotParse, ExpectParse);
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EXPECT_TRUE(GotRead);
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return Result;
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}
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};
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TEST(FileCacheTest, Invalidation) {
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TestCache C;
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auto StaleOK = std::chrono::steady_clock::now();
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auto MustBeFresh = StaleOK + std::chrono::hours(1);
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C.setContents("a");
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EXPECT_EQ("a", C.get(StaleOK, /*ExpectParse=*/true)) << "Parsed first time";
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EXPECT_EQ("a", C.get(StaleOK, /*ExpectParse=*/false)) << "Cached (time)";
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EXPECT_EQ("a", C.get(MustBeFresh, /*ExpectParse=*/false)) << "Cached (stat)";
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C.setContents("bb");
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EXPECT_EQ("a", C.get(StaleOK, /*ExpectParse=*/false)) << "Cached (time)";
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EXPECT_EQ("bb", C.get(MustBeFresh, /*ExpectParse=*/true)) << "Size changed";
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EXPECT_EQ("bb", C.get(MustBeFresh, /*ExpectParse=*/true)) << "Cached (stat)";
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C.setContents(nullptr);
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EXPECT_EQ("bb", C.get(StaleOK, /*ExpectParse=*/false)) << "Cached (time)";
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EXPECT_EQ("", C.get(MustBeFresh, /*ExpectParse=*/true)) << "Stat failed";
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EXPECT_EQ("", C.get(MustBeFresh, /*ExpectParse=*/false)) << "Cached (404)";
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C.setContents("bb"); // Match the previous stat values!
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EXPECT_EQ("", C.get(StaleOK, /*ExpectParse=*/false)) << "Cached (time)";
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EXPECT_EQ("bb", C.get(MustBeFresh, /*ExpectParse=*/true)) << "Size changed";
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}
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} // namespace
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} // namespace config
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} // namespace clangd
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} // namespace clang
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