Abseil Common Libraries (C++) (grcp 依赖)
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119 lines
3.4 KiB
119 lines
3.4 KiB
// Copyright 2017 The Abseil Authors. |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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// This file contains functions that remove a defined part from the std::string, |
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// i.e., strip the std::string. |
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#include "absl/strings/strip.h" |
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#include <cassert> |
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#include <cstdio> |
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#include <cstring> |
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#include "gmock/gmock.h" |
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#include "gtest/gtest.h" |
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#include "absl/strings/string_view.h" |
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namespace { |
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using testing::ElementsAre; |
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using testing::IsEmpty; |
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TEST(Strip, ConsumePrefixOneChar) { |
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absl::string_view input("abc"); |
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EXPECT_TRUE(absl::ConsumePrefix(&input, "a")); |
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EXPECT_EQ(input, "bc"); |
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EXPECT_FALSE(absl::ConsumePrefix(&input, "x")); |
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EXPECT_EQ(input, "bc"); |
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EXPECT_TRUE(absl::ConsumePrefix(&input, "b")); |
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EXPECT_EQ(input, "c"); |
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EXPECT_TRUE(absl::ConsumePrefix(&input, "c")); |
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EXPECT_EQ(input, ""); |
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EXPECT_FALSE(absl::ConsumePrefix(&input, "a")); |
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EXPECT_EQ(input, ""); |
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} |
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TEST(Strip, ConsumePrefix) { |
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absl::string_view input("abcdef"); |
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EXPECT_FALSE(absl::ConsumePrefix(&input, "abcdefg")); |
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EXPECT_EQ(input, "abcdef"); |
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EXPECT_FALSE(absl::ConsumePrefix(&input, "abce")); |
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EXPECT_EQ(input, "abcdef"); |
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EXPECT_TRUE(absl::ConsumePrefix(&input, "")); |
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EXPECT_EQ(input, "abcdef"); |
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EXPECT_FALSE(absl::ConsumePrefix(&input, "abcdeg")); |
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EXPECT_EQ(input, "abcdef"); |
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EXPECT_TRUE(absl::ConsumePrefix(&input, "abcdef")); |
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EXPECT_EQ(input, ""); |
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input = "abcdef"; |
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EXPECT_TRUE(absl::ConsumePrefix(&input, "abcde")); |
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EXPECT_EQ(input, "f"); |
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} |
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TEST(Strip, ConsumeSuffix) { |
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absl::string_view input("abcdef"); |
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EXPECT_FALSE(absl::ConsumeSuffix(&input, "abcdefg")); |
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EXPECT_EQ(input, "abcdef"); |
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EXPECT_TRUE(absl::ConsumeSuffix(&input, "")); |
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EXPECT_EQ(input, "abcdef"); |
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EXPECT_TRUE(absl::ConsumeSuffix(&input, "def")); |
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EXPECT_EQ(input, "abc"); |
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input = "abcdef"; |
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EXPECT_FALSE(absl::ConsumeSuffix(&input, "abcdeg")); |
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EXPECT_EQ(input, "abcdef"); |
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EXPECT_TRUE(absl::ConsumeSuffix(&input, "f")); |
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EXPECT_EQ(input, "abcde"); |
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EXPECT_TRUE(absl::ConsumeSuffix(&input, "abcde")); |
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EXPECT_EQ(input, ""); |
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} |
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TEST(Strip, StripPrefix) { |
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const absl::string_view null_str; |
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EXPECT_EQ(absl::StripPrefix("foobar", "foo"), "bar"); |
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EXPECT_EQ(absl::StripPrefix("foobar", ""), "foobar"); |
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EXPECT_EQ(absl::StripPrefix("foobar", null_str), "foobar"); |
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EXPECT_EQ(absl::StripPrefix("foobar", "foobar"), ""); |
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EXPECT_EQ(absl::StripPrefix("foobar", "bar"), "foobar"); |
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EXPECT_EQ(absl::StripPrefix("foobar", "foobarr"), "foobar"); |
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EXPECT_EQ(absl::StripPrefix("", ""), ""); |
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} |
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TEST(Strip, StripSuffix) { |
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const absl::string_view null_str; |
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EXPECT_EQ(absl::StripSuffix("foobar", "bar"), "foo"); |
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EXPECT_EQ(absl::StripSuffix("foobar", ""), "foobar"); |
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EXPECT_EQ(absl::StripSuffix("foobar", null_str), "foobar"); |
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EXPECT_EQ(absl::StripSuffix("foobar", "foobar"), ""); |
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EXPECT_EQ(absl::StripSuffix("foobar", "foo"), "foobar"); |
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EXPECT_EQ(absl::StripSuffix("foobar", "ffoobar"), "foobar"); |
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EXPECT_EQ(absl::StripSuffix("", ""), ""); |
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} |
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} // namespace
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