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//===--- ImportTests.cpp - Tests for representation of imports ------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#include "TestContext.h"
#include "swift/AST/Import.h"
#include "gtest/gtest.h"
using namespace swift;
using namespace swift::unittest;
namespace {
/// Helper class used to create ImportPath and hold all strings for identifiers
class ImportPathContext {
TestContext Ctx;
public:
ImportPathContext() = default;
/// Hepler routine for building ImportPath
/// Build()
/// @see ImportPathBuilder
inline ImportPath Build(StringRef Name) noexcept {
return ImportPath::Builder(Ctx.Ctx, Name, '.').copyTo(Ctx.Ctx);
}
};
} // namespace
TEST(ImportPath, Comparison) {
ImportPathContext ctx;
/// Simple soundness check:
EXPECT_FALSE(ctx.Build("A.B.C") < ctx.Build("A.B.C"));
/// Check order chain:
/// A < A.A < A.A.A < A.A.B < A.B < A.B.A < AA < B < B.A
EXPECT_LT(ctx.Build("A"), ctx.Build("A.A"));
EXPECT_LT(ctx.Build("A.A"), ctx.Build("A.A.A"));
EXPECT_LT(ctx.Build("A.A.A"), ctx.Build("A.A.B"));
EXPECT_LT(ctx.Build("A.A.B"), ctx.Build("A.B"));
EXPECT_LT(ctx.Build("A.B"), ctx.Build("A.B.A"));
EXPECT_LT(ctx.Build("A.B.A"), ctx.Build("AA"));
EXPECT_LT(ctx.Build("B"), ctx.Build("B.A"));
/// Further ImportPaths are semantically incorrect, but we must
/// check that comparing them does not cause compiler to crash.
EXPECT_LT(ctx.Build("."), ctx.Build("A"));
EXPECT_LT(ctx.Build("A"), ctx.Build("AA."));
EXPECT_LT(ctx.Build("A"), ctx.Build("AA.."));
EXPECT_LT(ctx.Build(".A"), ctx.Build("AA"));
}
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