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shaka-packager/base/strings/string_split_unittest.cc

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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/strings/string_split.h"
#include "base/strings/utf_string_conversions.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using ::testing::ElementsAre;
namespace base {
namespace {
#if !defined(WCHAR_T_IS_UTF16)
// Overload SplitString with a wide-char version to make it easier to
// test the string16 version with wide character literals.
void SplitString(const std::wstring& str,
wchar_t c,
std::vector<std::wstring>* result) {
std::vector<string16> result16;
SplitString(WideToUTF16(str), c, &result16);
for (size_t i = 0; i < result16.size(); ++i)
result->push_back(UTF16ToWide(result16[i]));
}
#endif
} // anonymous namespace
class SplitStringIntoKeyValuesTest : public testing::Test {
protected:
std::string key;
std::vector<std::string> values;
};
TEST_F(SplitStringIntoKeyValuesTest, EmptyInputMultipleValues) {
EXPECT_FALSE(SplitStringIntoKeyValues(std::string(), // Empty input
'\t', // Key separators
&key,
&values));
EXPECT_TRUE(key.empty());
EXPECT_TRUE(values.empty());
}
TEST_F(SplitStringIntoKeyValuesTest, EmptyValueInputMultipleValues) {
EXPECT_FALSE(SplitStringIntoKeyValues("key_with_no_value\t",
'\t', // Key separators
&key, &values));
EXPECT_EQ("key_with_no_value", key);
EXPECT_TRUE(values.empty());
}
TEST_F(SplitStringIntoKeyValuesTest, EmptyKeyInputMultipleValues) {
EXPECT_TRUE(SplitStringIntoKeyValues("\tvalue for empty key",
'\t', // Key separators
&key, &values));
EXPECT_TRUE(key.empty());
ASSERT_EQ(1U, values.size());
}
TEST_F(SplitStringIntoKeyValuesTest, KeyWithMultipleValues) {
EXPECT_TRUE(SplitStringIntoKeyValues("key1\tvalue1, value2 value3",
'\t', // Key separators
&key, &values));
EXPECT_EQ("key1", key);
ASSERT_EQ(1U, values.size());
EXPECT_EQ("value1, value2 value3", values[0]);
}
TEST_F(SplitStringIntoKeyValuesTest, EmptyInputSingleValue) {
EXPECT_FALSE(SplitStringIntoKeyValues(std::string(), // Empty input
'\t', // Key separators
&key,
&values));
EXPECT_TRUE(key.empty());
EXPECT_TRUE(values.empty());
}
TEST_F(SplitStringIntoKeyValuesTest, EmptyValueInputSingleValue) {
EXPECT_FALSE(SplitStringIntoKeyValues("key_with_no_value\t",
'\t', // Key separators
&key, &values));
EXPECT_EQ("key_with_no_value", key);
EXPECT_TRUE(values.empty());
}
TEST_F(SplitStringIntoKeyValuesTest, EmptyKeyInputSingleValue) {
EXPECT_TRUE(SplitStringIntoKeyValues("\tvalue for empty key",
'\t', // Key separators
&key, &values));
EXPECT_TRUE(key.empty());
ASSERT_EQ(1U, values.size());
EXPECT_EQ("value for empty key", values[0]);
}
TEST_F(SplitStringIntoKeyValuesTest, KeyWithSingleValue) {
EXPECT_TRUE(SplitStringIntoKeyValues("key1\tvalue1, value2 value3",
'\t', // Key separators
&key, &values));
EXPECT_EQ("key1", key);
ASSERT_EQ(1U, values.size());
EXPECT_EQ("value1, value2 value3", values[0]);
}
class SplitStringIntoKeyValuePairsTest : public testing::Test {
protected:
std::vector<std::pair<std::string, std::string> > kv_pairs;
};
TEST_F(SplitStringIntoKeyValuePairsTest, EmptyString) {
EXPECT_TRUE(SplitStringIntoKeyValuePairs(std::string(),
':', // Key-value delimiters
',', // Key-value pair delims
&kv_pairs));
EXPECT_TRUE(kv_pairs.empty());
}
TEST_F(SplitStringIntoKeyValuePairsTest, EmptySecondPair) {
EXPECT_TRUE(SplitStringIntoKeyValuePairs("key1:value1,,key3:value3",
':', // Key-value delimiters
',', // Key-value pair delims
&kv_pairs));
ASSERT_EQ(2U, kv_pairs.size());
EXPECT_EQ("key1", kv_pairs[0].first);
EXPECT_EQ("value1", kv_pairs[0].second);
EXPECT_EQ("key3", kv_pairs[1].first);
EXPECT_EQ("value3", kv_pairs[1].second);
}
TEST_F(SplitStringIntoKeyValuePairsTest, EmptySecondValue) {
EXPECT_FALSE(SplitStringIntoKeyValuePairs("key1:value1 , key2:",
':', // Key-value delimiters
',', // Key-value pair delims
&kv_pairs));
ASSERT_EQ(2U, kv_pairs.size());
EXPECT_EQ("key1", kv_pairs[0].first);
EXPECT_EQ("value1", kv_pairs[0].second);
EXPECT_EQ("key2", kv_pairs[1].first);
EXPECT_EQ("", kv_pairs[1].second);
}
TEST_F(SplitStringIntoKeyValuePairsTest, DelimiterInValue) {
EXPECT_TRUE(SplitStringIntoKeyValuePairs("key1:va:ue1 , key2:value2",
':', // Key-value delimiters
',', // Key-value pair delims
&kv_pairs));
ASSERT_EQ(2U, kv_pairs.size());
EXPECT_EQ("key1", kv_pairs[0].first);
EXPECT_EQ("va:ue1", kv_pairs[0].second);
EXPECT_EQ("key2", kv_pairs[1].first);
EXPECT_EQ("value2", kv_pairs[1].second);
}
TEST(SplitStringUsingSubstrTest, EmptyString) {
std::vector<std::string> results;
SplitStringUsingSubstr(std::string(), "DELIMITER", &results);
ASSERT_EQ(1u, results.size());
EXPECT_THAT(results, ElementsAre(""));
}
// Test for SplitString
TEST(StringUtilTest, SplitString) {
std::vector<std::wstring> r;
SplitString(std::wstring(), L',', &r);
EXPECT_EQ(0U, r.size());
r.clear();
SplitString(L"a,b,c", L',', &r);
ASSERT_EQ(3U, r.size());
EXPECT_EQ(r[0], L"a");
EXPECT_EQ(r[1], L"b");
EXPECT_EQ(r[2], L"c");
r.clear();
SplitString(L"a, b, c", L',', &r);
ASSERT_EQ(3U, r.size());
EXPECT_EQ(r[0], L"a");
EXPECT_EQ(r[1], L"b");
EXPECT_EQ(r[2], L"c");
r.clear();
SplitString(L"a,,c", L',', &r);
ASSERT_EQ(3U, r.size());
EXPECT_EQ(r[0], L"a");
EXPECT_EQ(r[1], L"");
EXPECT_EQ(r[2], L"c");
r.clear();
SplitString(L" ", L'*', &r);
EXPECT_EQ(0U, r.size());
r.clear();
SplitString(L"foo", L'*', &r);
ASSERT_EQ(1U, r.size());
EXPECT_EQ(r[0], L"foo");
r.clear();
SplitString(L"foo ,", L',', &r);
ASSERT_EQ(2U, r.size());
EXPECT_EQ(r[0], L"foo");
EXPECT_EQ(r[1], L"");
r.clear();
SplitString(L",", L',', &r);
ASSERT_EQ(2U, r.size());
EXPECT_EQ(r[0], L"");
EXPECT_EQ(r[1], L"");
r.clear();
SplitString(L"\t\ta\t", L'\t', &r);
ASSERT_EQ(4U, r.size());
EXPECT_EQ(r[0], L"");
EXPECT_EQ(r[1], L"");
EXPECT_EQ(r[2], L"a");
EXPECT_EQ(r[3], L"");
r.clear();
SplitString(L"\ta\t\nb\tcc", L'\n', &r);
ASSERT_EQ(2U, r.size());
EXPECT_EQ(r[0], L"a");
EXPECT_EQ(r[1], L"b\tcc");
r.clear();
}
TEST(SplitStringUsingSubstrTest, StringWithNoDelimiter) {
std::vector<std::string> results;
SplitStringUsingSubstr("alongwordwithnodelimiter", "DELIMITER", &results);
ASSERT_EQ(1u, results.size());
EXPECT_THAT(results, ElementsAre("alongwordwithnodelimiter"));
}
TEST(SplitStringUsingSubstrTest, LeadingDelimitersSkipped) {
std::vector<std::string> results;
SplitStringUsingSubstr(
"DELIMITERDELIMITERDELIMITERoneDELIMITERtwoDELIMITERthree",
"DELIMITER",
&results);
ASSERT_EQ(6u, results.size());
EXPECT_THAT(results, ElementsAre("", "", "", "one", "two", "three"));
}
TEST(SplitStringUsingSubstrTest, ConsecutiveDelimitersSkipped) {
std::vector<std::string> results;
SplitStringUsingSubstr(
"unoDELIMITERDELIMITERDELIMITERdosDELIMITERtresDELIMITERDELIMITERcuatro",
"DELIMITER",
&results);
ASSERT_EQ(7u, results.size());
EXPECT_THAT(results, ElementsAre("uno", "", "", "dos", "tres", "", "cuatro"));
}
TEST(SplitStringUsingSubstrTest, TrailingDelimitersSkipped) {
std::vector<std::string> results;
SplitStringUsingSubstr(
"unDELIMITERdeuxDELIMITERtroisDELIMITERquatreDELIMITERDELIMITERDELIMITER",
"DELIMITER",
&results);
ASSERT_EQ(7u, results.size());
EXPECT_THAT(
results, ElementsAre("un", "deux", "trois", "quatre", "", "", ""));
}
TEST(StringSplitTest, StringSplitDontTrim) {
std::vector<std::string> r;
SplitStringDontTrim(" ", '*', &r);
ASSERT_EQ(1U, r.size());
EXPECT_EQ(r[0], " ");
SplitStringDontTrim("\t \ta\t ", '\t', &r);
ASSERT_EQ(4U, r.size());
EXPECT_EQ(r[0], "");
EXPECT_EQ(r[1], " ");
EXPECT_EQ(r[2], "a");
EXPECT_EQ(r[3], " ");
SplitStringDontTrim("\ta\t\nb\tcc", '\n', &r);
ASSERT_EQ(2U, r.size());
EXPECT_EQ(r[0], "\ta\t");
EXPECT_EQ(r[1], "b\tcc");
}
TEST(StringSplitTest, SplitStringAlongWhitespace) {
struct TestData {
const char* input;
const size_t expected_result_count;
const char* output1;
const char* output2;
} data[] = {
{ "a", 1, "a", "" },
{ " ", 0, "", "" },
{ " a", 1, "a", "" },
{ " ab ", 1, "ab", "" },
{ " ab c", 2, "ab", "c" },
{ " ab c ", 2, "ab", "c" },
{ " ab cd", 2, "ab", "cd" },
{ " ab cd ", 2, "ab", "cd" },
{ " \ta\t", 1, "a", "" },
{ " b\ta\t", 2, "b", "a" },
{ " b\tat", 2, "b", "at" },
{ "b\tat", 2, "b", "at" },
{ "b\t at", 2, "b", "at" },
};
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(data); ++i) {
std::vector<std::string> results;
SplitStringAlongWhitespace(data[i].input, &results);
ASSERT_EQ(data[i].expected_result_count, results.size());
if (data[i].expected_result_count > 0)
ASSERT_EQ(data[i].output1, results[0]);
if (data[i].expected_result_count > 1)
ASSERT_EQ(data[i].output2, results[1]);
}
}
} // namespace base
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