d6d30dd959
std::string_view::starts_with isn't available until C++20. Create llvm::starts_with for now; we can delete this when LLVM moves to C++20 one day. To run the newly added unit test: $ cd llvm/build; ninja ADTTests; cd - $ ./llvm/build/unittests/ADT/ADTTests --gtest_filter=StringViewExtrasTest.\* Reviewed By: MaskRay, erichkeane Differential Revision: https://reviews.llvm.org/D148367
33 lines
1.1 KiB
C++
33 lines
1.1 KiB
C++
//===- StringExtrasTest.cpp - Unit tests for String extras ----------------===//
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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 "llvm/ADT/StringViewExtras.h"
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#include "llvm/Support/raw_ostream.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include <string_view>
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using namespace llvm;
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TEST(StringViewExtrasTest, starts_with) {
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std::string haystack = "hello world";
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EXPECT_TRUE(llvm::starts_with(haystack, 'h'));
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EXPECT_FALSE(llvm::starts_with(haystack, '\0'));
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EXPECT_TRUE(llvm::starts_with(haystack, "hello"));
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// TODO: should this differ from \0?
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EXPECT_TRUE(llvm::starts_with(haystack, ""));
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std::string empty;
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EXPECT_FALSE(llvm::starts_with(empty, 'h'));
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EXPECT_FALSE(llvm::starts_with(empty, '\0'));
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EXPECT_FALSE(llvm::starts_with(empty, "hello"));
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// TODO: should this differ from \0?
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EXPECT_TRUE(llvm::starts_with(empty, ""));
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}
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