119 lines
3.4 KiB
C++
119 lines
3.4 KiB
C++
// 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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