124 lines
4.0 KiB
C++
124 lines
4.0 KiB
C++
//===-- FileDistanceTests.cpp ------------------------*- C++ -*-----------===//
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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 "FileDistance.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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namespace clang {
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namespace clangd {
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namespace {
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TEST(FileDistanceTests, Distance) {
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FileDistanceOptions Opts;
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Opts.UpCost = 5;
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Opts.DownCost = 3;
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SourceParams CostTwo;
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CostTwo.Cost = 2;
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FileDistance D(
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{{"tools/clang/lib/Format/FormatToken.cpp", SourceParams()},
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{"tools/clang/include/clang/Format/FormatToken.h", SourceParams()},
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{"include/llvm/ADT/StringRef.h", CostTwo}},
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Opts);
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// Source
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EXPECT_EQ(D.distance("tools/clang/lib/Format/FormatToken.cpp"), 0u);
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EXPECT_EQ(D.distance("include/llvm/ADT/StringRef.h"), 2u);
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// Parent
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EXPECT_EQ(D.distance("tools/clang/lib/Format/"), 5u);
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// Child
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EXPECT_EQ(D.distance("tools/clang/lib/Format/FormatToken.cpp/Oops"), 3u);
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// Ancestor (up+up+up+up)
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EXPECT_EQ(D.distance("/"), 22u);
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// Sibling (up+down)
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EXPECT_EQ(D.distance("tools/clang/lib/Format/AnotherFile.cpp"), 8u);
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// Cousin (up+up+down+down)
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EXPECT_EQ(D.distance("include/llvm/Support/Allocator.h"), 18u);
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// First cousin, once removed (up+up+up+down+down)
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EXPECT_EQ(D.distance("include/llvm-c/Core.h"), 23u);
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}
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TEST(FileDistanceTests, BadSource) {
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// We mustn't assume that paths above sources are best reached via them.
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FileDistanceOptions Opts;
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Opts.UpCost = 5;
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Opts.DownCost = 3;
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SourceParams CostLots;
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CostLots.Cost = 100;
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FileDistance D({{"a", SourceParams()}, {"b/b/b", CostLots}}, Opts);
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EXPECT_EQ(D.distance("b"), 8u); // a+up+down, not b+up+up
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EXPECT_EQ(D.distance("b/b/b"), 14u); // a+up+down+down+down, not b
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EXPECT_EQ(D.distance("b/b/b/c"), 17u); // a+up+down+down+down+down, not b+down
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}
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// Force the unittest URI scheme to be linked,
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static int LLVM_ATTRIBUTE_UNUSED UseUnittestScheme = UnittestSchemeAnchorSource;
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TEST(FileDistanceTests, URI) {
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FileDistanceOptions Opts;
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Opts.UpCost = 5;
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Opts.DownCost = 3;
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SourceParams CostLots;
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CostLots.Cost = 1000;
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URIDistance D({{testPath("foo"), CostLots},
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{"/not/a/testpath", SourceParams()},
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{"C:\\not\\a\\testpath", SourceParams()}},
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Opts);
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#ifdef _WIN32
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EXPECT_EQ(D.distance("file:///C%3a/not/a/testpath/either"), 3u);
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#else
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EXPECT_EQ(D.distance("file:///not/a/testpath/either"), 3u);
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#endif
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EXPECT_EQ(D.distance("unittest:///foo"), 1000u);
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EXPECT_EQ(D.distance("unittest:///bar"), 1008u);
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}
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TEST(FileDistance, LimitUpTraversals) {
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FileDistanceOptions Opts;
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Opts.UpCost = Opts.DownCost = 1;
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SourceParams CheapButLimited, CostLots;
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CheapButLimited.MaxUpTraversals = 1;
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CostLots.Cost = 100;
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FileDistance D({{"/", CostLots}, {"/a/b/c", CheapButLimited}}, Opts);
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EXPECT_EQ(D.distance("/a"), 101u);
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EXPECT_EQ(D.distance("/a/z"), 102u);
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EXPECT_EQ(D.distance("/a/b"), 1u);
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EXPECT_EQ(D.distance("/a/b/z"), 2u);
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}
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TEST(FileDistance, DisallowDownTraversalsFromRoot) {
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FileDistanceOptions Opts;
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Opts.UpCost = Opts.DownCost = 1;
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Opts.AllowDownTraversalFromRoot = false;
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SourceParams CostLots;
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CostLots.Cost = 100;
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FileDistance D({{"/", SourceParams()}, {"/a/b/c", CostLots}}, Opts);
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EXPECT_EQ(D.distance("/"), 0u);
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EXPECT_EQ(D.distance("/a"), 102u);
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EXPECT_EQ(D.distance("/a/b"), 101u);
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EXPECT_EQ(D.distance("/x"), FileDistance::Unreachable);
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}
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TEST(ScopeDistance, Smoke) {
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ScopeDistance D({"x::y::z", "x::", "", "a::"});
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EXPECT_EQ(D.distance("x::y::z::"), 0u);
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EXPECT_GT(D.distance("x::y::"), D.distance("x::y::z::"));
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EXPECT_GT(D.distance("x::"), D.distance("x::y::"));
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EXPECT_GT(D.distance("x::y::z::down::"), D.distance("x::y::"));
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EXPECT_GT(D.distance(""), D.distance("a::"));
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EXPECT_GT(D.distance("x::"), D.distance("a::"));
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}
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} // namespace
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} // namespace clangd
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} // namespace clang
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