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platform_system_core/base/strings_test.cpp
Elliott Hughes b4dc7be6c5 libbase: add ConsumePrefix/ConsumeSuffix. 
adb was already using ConsumePrefix, and now we have another would-be
user in cutils. (There appears to be one place in adb that should use
ConsumeSuffix, so I'm assuming we'll want that sooner or later.)

I've kept these inline because adb and google3's versions both were, and
I'm easily led.

Test: treehugger
Change-Id: I29d99032f6f6ccbfaefece59725db8afb02a4c87
2019-05-03 12:49:31 -07:00

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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "android-base/strings.h"
#include <gtest/gtest.h>
#include <string>
#include <vector>
#include <set>
#include <unordered_set>
TEST(strings, split_empty) {
std::vector<std::string> parts = android::base::Split("", ",");
ASSERT_EQ(1U, parts.size());
ASSERT_EQ("", parts[0]);
}
TEST(strings, split_single) {
std::vector<std::string> parts = android::base::Split("foo", ",");
ASSERT_EQ(1U, parts.size());
ASSERT_EQ("foo", parts[0]);
}
TEST(strings, split_simple) {
std::vector<std::string> parts = android::base::Split("foo,bar,baz", ",");
ASSERT_EQ(3U, parts.size());
ASSERT_EQ("foo", parts[0]);
ASSERT_EQ("bar", parts[1]);
ASSERT_EQ("baz", parts[2]);
}
TEST(strings, split_with_empty_part) {
std::vector<std::string> parts = android::base::Split("foo,,bar", ",");
ASSERT_EQ(3U, parts.size());
ASSERT_EQ("foo", parts[0]);
ASSERT_EQ("", parts[1]);
ASSERT_EQ("bar", parts[2]);
}
TEST(strings, split_with_trailing_empty_part) {
std::vector<std::string> parts = android::base::Split("foo,bar,", ",");
ASSERT_EQ(3U, parts.size());
ASSERT_EQ("foo", parts[0]);
ASSERT_EQ("bar", parts[1]);
ASSERT_EQ("", parts[2]);
}
TEST(strings, split_null_char) {
std::vector<std::string> parts =
android::base::Split(std::string("foo\0bar", 7), std::string("\0", 1));
ASSERT_EQ(2U, parts.size());
ASSERT_EQ("foo", parts[0]);
ASSERT_EQ("bar", parts[1]);
}
TEST(strings, split_any) {
std::vector<std::string> parts = android::base::Split("foo:bar,baz", ",:");
ASSERT_EQ(3U, parts.size());
ASSERT_EQ("foo", parts[0]);
ASSERT_EQ("bar", parts[1]);
ASSERT_EQ("baz", parts[2]);
}
TEST(strings, split_any_with_empty_part) {
std::vector<std::string> parts = android::base::Split("foo:,bar", ",:");
ASSERT_EQ(3U, parts.size());
ASSERT_EQ("foo", parts[0]);
ASSERT_EQ("", parts[1]);
ASSERT_EQ("bar", parts[2]);
}
TEST(strings, trim_empty) {
ASSERT_EQ("", android::base::Trim(""));
}
TEST(strings, trim_already_trimmed) {
ASSERT_EQ("foo", android::base::Trim("foo"));
}
TEST(strings, trim_left) {
ASSERT_EQ("foo", android::base::Trim(" foo"));
}
TEST(strings, trim_right) {
ASSERT_EQ("foo", android::base::Trim("foo "));
}
TEST(strings, trim_both) {
ASSERT_EQ("foo", android::base::Trim(" foo "));
}
TEST(strings, trim_no_trim_middle) {
ASSERT_EQ("foo bar", android::base::Trim("foo bar"));
}
TEST(strings, trim_other_whitespace) {
ASSERT_EQ("foo", android::base::Trim("\v\tfoo\n\f"));
}
TEST(strings, join_nothing) {
std::vector<std::string> list = {};
ASSERT_EQ("", android::base::Join(list, ','));
}
TEST(strings, join_single) {
std::vector<std::string> list = {"foo"};
ASSERT_EQ("foo", android::base::Join(list, ','));
}
TEST(strings, join_simple) {
std::vector<std::string> list = {"foo", "bar", "baz"};
ASSERT_EQ("foo,bar,baz", android::base::Join(list, ','));
}
TEST(strings, join_separator_in_vector) {
std::vector<std::string> list = {",", ","};
ASSERT_EQ(",,,", android::base::Join(list, ','));
}
TEST(strings, join_simple_ints) {
std::set<int> list = {1, 2, 3};
ASSERT_EQ("1,2,3", android::base::Join(list, ','));
}
TEST(strings, join_unordered_set) {
std::unordered_set<int> list = {1, 2};
ASSERT_TRUE("1,2" == android::base::Join(list, ',') ||
"2,1" == android::base::Join(list, ','));
}
TEST(strings, StartsWith_empty) {
ASSERT_FALSE(android::base::StartsWith("", "foo"));
ASSERT_TRUE(android::base::StartsWith("", ""));
}
TEST(strings, StartsWithIgnoreCase_empty) {
ASSERT_FALSE(android::base::StartsWithIgnoreCase("", "foo"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("", ""));
}
TEST(strings, StartsWith_simple) {
ASSERT_TRUE(android::base::StartsWith("foo", ""));
ASSERT_TRUE(android::base::StartsWith("foo", "f"));
ASSERT_TRUE(android::base::StartsWith("foo", "fo"));
ASSERT_TRUE(android::base::StartsWith("foo", "foo"));
}
TEST(strings, StartsWithIgnoreCase_simple) {
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", ""));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "f"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "F"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "fo"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "fO"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "Fo"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "FO"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "foo"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "foO"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "fOo"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "fOO"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "Foo"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "FoO"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "FOo"));
ASSERT_TRUE(android::base::StartsWithIgnoreCase("foo", "FOO"));
}
TEST(strings, StartsWith_prefix_too_long) {
ASSERT_FALSE(android::base::StartsWith("foo", "foobar"));
}
TEST(strings, StartsWithIgnoreCase_prefix_too_long) {
ASSERT_FALSE(android::base::StartsWithIgnoreCase("foo", "foobar"));
ASSERT_FALSE(android::base::StartsWithIgnoreCase("foo", "FOOBAR"));
}
TEST(strings, StartsWith_contains_prefix) {
ASSERT_FALSE(android::base::StartsWith("foobar", "oba"));
ASSERT_FALSE(android::base::StartsWith("foobar", "bar"));
}
TEST(strings, StartsWithIgnoreCase_contains_prefix) {
ASSERT_FALSE(android::base::StartsWithIgnoreCase("foobar", "oba"));
ASSERT_FALSE(android::base::StartsWithIgnoreCase("foobar", "OBA"));
ASSERT_FALSE(android::base::StartsWithIgnoreCase("foobar", "bar"));
ASSERT_FALSE(android::base::StartsWithIgnoreCase("foobar", "BAR"));
}
TEST(strings, StartsWith_char) {
ASSERT_FALSE(android::base::StartsWith("", 'f'));
ASSERT_TRUE(android::base::StartsWith("foo", 'f'));
ASSERT_FALSE(android::base::StartsWith("foo", 'o'));
}
TEST(strings, EndsWith_empty) {
ASSERT_FALSE(android::base::EndsWith("", "foo"));
ASSERT_TRUE(android::base::EndsWith("", ""));
}
TEST(strings, EndsWithIgnoreCase_empty) {
ASSERT_FALSE(android::base::EndsWithIgnoreCase("", "foo"));
ASSERT_FALSE(android::base::EndsWithIgnoreCase("", "FOO"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("", ""));
}
TEST(strings, EndsWith_simple) {
ASSERT_TRUE(android::base::EndsWith("foo", ""));
ASSERT_TRUE(android::base::EndsWith("foo", "o"));
ASSERT_TRUE(android::base::EndsWith("foo", "oo"));
ASSERT_TRUE(android::base::EndsWith("foo", "foo"));
}
TEST(strings, EndsWithIgnoreCase_simple) {
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", ""));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "o"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "O"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "oo"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "oO"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "Oo"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "OO"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "foo"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "foO"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "fOo"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "fOO"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "Foo"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "FoO"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "FOo"));
ASSERT_TRUE(android::base::EndsWithIgnoreCase("foo", "FOO"));
}
TEST(strings, EndsWith_prefix_too_long) {
ASSERT_FALSE(android::base::EndsWith("foo", "foobar"));
}
TEST(strings, EndsWithIgnoreCase_prefix_too_long) {
ASSERT_FALSE(android::base::EndsWithIgnoreCase("foo", "foobar"));
ASSERT_FALSE(android::base::EndsWithIgnoreCase("foo", "FOOBAR"));
}
TEST(strings, EndsWith_contains_prefix) {
ASSERT_FALSE(android::base::EndsWith("foobar", "oba"));
ASSERT_FALSE(android::base::EndsWith("foobar", "foo"));
}
TEST(strings, EndsWithIgnoreCase_contains_prefix) {
ASSERT_FALSE(android::base::EndsWithIgnoreCase("foobar", "OBA"));
ASSERT_FALSE(android::base::EndsWithIgnoreCase("foobar", "FOO"));
}
TEST(strings, StartsWith_std_string) {
ASSERT_TRUE(android::base::StartsWith("hello", std::string{"hell"}));
ASSERT_FALSE(android::base::StartsWith("goodbye", std::string{"hell"}));
}
TEST(strings, StartsWithIgnoreCase_std_string) {
ASSERT_TRUE(android::base::StartsWithIgnoreCase("HeLlO", std::string{"hell"}));
ASSERT_FALSE(android::base::StartsWithIgnoreCase("GoOdByE", std::string{"hell"}));
}
TEST(strings, EndsWith_std_string) {
ASSERT_TRUE(android::base::EndsWith("hello", std::string{"lo"}));
ASSERT_FALSE(android::base::EndsWith("goodbye", std::string{"lo"}));
}
TEST(strings, EndsWithIgnoreCase_std_string) {
ASSERT_TRUE(android::base::EndsWithIgnoreCase("HeLlO", std::string{"lo"}));
ASSERT_FALSE(android::base::EndsWithIgnoreCase("GoOdByE", std::string{"lo"}));
}
TEST(strings, EndsWith_char) {
ASSERT_FALSE(android::base::EndsWith("", 'o'));
ASSERT_TRUE(android::base::EndsWith("foo", 'o'));
ASSERT_FALSE(android::base::EndsWith("foo", "f"));
}
TEST(strings, EqualsIgnoreCase) {
ASSERT_TRUE(android::base::EqualsIgnoreCase("foo", "FOO"));
ASSERT_TRUE(android::base::EqualsIgnoreCase("FOO", "foo"));
ASSERT_FALSE(android::base::EqualsIgnoreCase("foo", "bar"));
ASSERT_FALSE(android::base::EqualsIgnoreCase("foo", "fool"));
}
TEST(strings, ubsan_28729303) {
android::base::Split("/dev/null", ":");
}
TEST(strings, ConsumePrefix) {
std::string_view s{"foo.bar"};
ASSERT_FALSE(android::base::ConsumePrefix(&s, "bar."));
ASSERT_EQ("foo.bar", s);
ASSERT_TRUE(android::base::ConsumePrefix(&s, "foo."));
ASSERT_EQ("bar", s);
}
TEST(strings, ConsumeSuffix) {
std::string_view s{"foo.bar"};
ASSERT_FALSE(android::base::ConsumeSuffix(&s, ".foo"));
ASSERT_EQ("foo.bar", s);
ASSERT_TRUE(android::base::ConsumeSuffix(&s, ".bar"));
ASSERT_EQ("foo", s);
}
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