src/gromacs/utility/tests/stringutil.cpp

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  35 /*! \internal \file
  36  * \brief
  37  * Tests for string utility functions and classes.
  38  *
  39  * For development, the tests can be run with a '-stdout' command-line option
  40  * to print out the help to stdout instead of using the XML reference
  41  * framework.
  42  *
  43  * \author Teemu Murtola <teemu.murtola@gmail.com>
  44  * \ingroup module_utility
  45  */
  46 #include "gmxpre.h"
  47
  48 #include "gromacs/utility/stringutil.h"
  49
  50 #include <string>
  51 #include <vector>
  52
  53 #include <gmock/gmock.h>
  54 #include <gtest/gtest.h>
  55
  56 #include "gromacs/utility/arrayref.h"
  57 #include "gromacs/utility/exceptions.h"
  58
  59 #include "testutils/refdata.h"
  60 #include "testutils/stringtest.h"
  61
  62 namespace gmx
  63 {
  64 namespace test
  65 {
  66 namespace
  67 {
  68
  69 /********************************************************************
  70  * Tests for simple string utilities
  71  */
  72
  73 TEST(StringUtilityTest, StartsWith)
  74 {
  75     EXPECT_TRUE(gmx::startsWith("foobar", "foo"));
  76     EXPECT_TRUE(gmx::startsWith("foobar", ""));
  77     EXPECT_TRUE(gmx::startsWith("", ""));
  78     EXPECT_FALSE(gmx::startsWith("", "foobar"));
  79     EXPECT_FALSE(gmx::startsWith("foo", "foobar"));
  80     EXPECT_FALSE(gmx::startsWith("foobar", "oob"));
  81     EXPECT_TRUE(gmx::startsWith(std::string("foobar"), "foo"));
  82     EXPECT_TRUE(gmx::startsWith(std::string("foobar"), ""));
  83     EXPECT_TRUE(gmx::startsWith(std::string(""), ""));
  84     EXPECT_FALSE(gmx::startsWith(std::string(""), "foobar"));
  85     EXPECT_FALSE(gmx::startsWith(std::string("foo"), "foobar"));
  86     EXPECT_FALSE(gmx::startsWith(std::string("foobar"), "oob"));
  87 }
  88
  89 TEST(StringUtilityTest, EndsWith)
  90 {
  91     EXPECT_TRUE(gmx::endsWith("foobar", "bar"));
  92     EXPECT_TRUE(gmx::endsWith("foobar", nullptr));
  93     EXPECT_TRUE(gmx::endsWith("foobar", ""));
  94     EXPECT_TRUE(gmx::endsWith("", ""));
  95     EXPECT_FALSE(gmx::endsWith("", "foobar"));
  96     EXPECT_FALSE(gmx::endsWith("foobar", "bbar"));
  97     EXPECT_FALSE(gmx::endsWith("foobar", "barr"));
  98     EXPECT_FALSE(gmx::endsWith("foobar", "foofoobar"));
  99 }
 100
 101 TEST(StringUtilityTest, StripSuffixIfPresent)
 102 {
 103     EXPECT_EQ("foo", gmx::stripSuffixIfPresent("foobar", "bar"));
 104     EXPECT_EQ("foobar", gmx::stripSuffixIfPresent("foobar", nullptr));
 105     EXPECT_EQ("foobar", gmx::stripSuffixIfPresent("foobar", ""));
 106     EXPECT_EQ("foobar", gmx::stripSuffixIfPresent("foobar", "bbar"));
 107     EXPECT_EQ("foobar", gmx::stripSuffixIfPresent("foobar", "barr"));
 108     EXPECT_EQ("foobar", gmx::stripSuffixIfPresent("foobar", "foofoobar"));
 109 }
 110
 111 TEST(StringUtilityTest, StripString)
 112 {
 113     EXPECT_EQ("", gmx::stripString(""));
 114     EXPECT_EQ("foo", gmx::stripString("foo"));
 115     EXPECT_EQ("foo", gmx::stripString("  foo"));
 116     EXPECT_EQ("foo", gmx::stripString("foo "));
 117     EXPECT_EQ("f o o", gmx::stripString(" f o o  "));
 118 }
 119
 120 TEST(StringUtilityTest, SplitString)
 121 {
 122     using ::testing::ElementsAre;
 123     using ::testing::IsEmpty;
 124     using ::testing::Matcher;
 125     Matcher<std::vector<std::string> > matcher = ElementsAre("foo", "bar");
 126     EXPECT_THAT(gmx::splitString("foo bar"), matcher);
 127     EXPECT_THAT(gmx::splitString("  foo bar"), matcher);
 128     EXPECT_THAT(gmx::splitString("foo bar  "), matcher);
 129     EXPECT_THAT(gmx::splitString(" foo \t bar  "), matcher);
 130     EXPECT_THAT(gmx::splitString(""), IsEmpty());
 131     EXPECT_THAT(gmx::splitString("   "), IsEmpty());
 132 }
 133
 134 TEST(StringUtilityTest, SplitDelimitedString)
 135 {
 136     using ::testing::ElementsAre;
 137     using ::testing::IsEmpty;
 138     EXPECT_THAT(gmx::splitDelimitedString("foo;bar", ';'), ElementsAre("foo", "bar"));
 139     EXPECT_THAT(gmx::splitDelimitedString(";foo;bar;", ';'), ElementsAre("", "foo", "bar", ""));
 140     EXPECT_THAT(gmx::splitDelimitedString("foo;;bar", ';'), ElementsAre("foo", "", "bar"));
 141     EXPECT_THAT(gmx::splitDelimitedString("foo", ';'), ElementsAre("foo"));
 142     EXPECT_THAT(gmx::splitDelimitedString(";", ';'), ElementsAre("", ""));
 143     EXPECT_THAT(gmx::splitDelimitedString("", ';'), IsEmpty());
 144 }
 145
 146 TEST(StringUtilityTest, SplitAndTrimDelimitedString)
 147 {
 148     using ::testing::ElementsAre;
 149     using ::testing::IsEmpty;
 150     EXPECT_THAT(splitAndTrimDelimitedString("", ';'), IsEmpty());
 151     EXPECT_THAT(splitAndTrimDelimitedString(" \t\n ", ';'), ElementsAre(""));
 152     EXPECT_THAT(splitAndTrimDelimitedString("foo", ';'), ElementsAre("foo"));
 153     EXPECT_THAT(splitAndTrimDelimitedString(" foo ", ';'), ElementsAre("foo"));
 154     EXPECT_THAT(splitAndTrimDelimitedString("foo;bar", ';'), ElementsAre("foo", "bar"));
 155     EXPECT_THAT(splitAndTrimDelimitedString(";foo;bar", ';'), ElementsAre("", "foo", "bar"));
 156     EXPECT_THAT(splitAndTrimDelimitedString("foo;bar;", ';'), ElementsAre("foo", "bar", ""));
 157     EXPECT_THAT(splitAndTrimDelimitedString(";foo;bar;", ';'), ElementsAre("", "foo", "bar", ""));
 158     EXPECT_THAT(splitAndTrimDelimitedString("foo;;bar", ';'), ElementsAre("foo", "", "bar"));
 159     EXPECT_THAT(splitAndTrimDelimitedString("foo  ;  bar ", ';'), ElementsAre("foo", "bar"));
 160     EXPECT_THAT(splitAndTrimDelimitedString("  ; foo ;  bar ", ';'), ElementsAre("", "foo", "bar"));
 161     EXPECT_THAT(splitAndTrimDelimitedString(" foo  ;  bar ; ", ';'), ElementsAre("foo", "bar", ""));
 162     EXPECT_THAT(splitAndTrimDelimitedString(" ;  foo\n ;  bar ;  ", ';'), ElementsAre("", "foo", "bar", ""));
 163     EXPECT_THAT(splitAndTrimDelimitedString(" foo  ; ; \tbar", ';'), ElementsAre("foo", "", "bar"));
 164 }
 165
 166 /********************************************************************
 167  * Tests for formatString()
 168  */
 169
 170 TEST(FormatStringTest, HandlesBasicFormatting)
 171 {
 172     EXPECT_EQ("12 abc", gmx::formatString("%d %s", 12, "abc"));
 173 }
 174
 175 TEST(FormatStringTest, HandlesLongStrings)
 176 {
 177     std::string longString = gmx::formatString("%*c%d", 2000, 'x', 10);
 178     EXPECT_EQ(2002U, longString.length());
 179     EXPECT_EQ("x10", longString.substr(1999));
 180 }
 181
 182 /********************************************************************
 183  * Tests for StringFormatter
 184  */
 185
 186 TEST(StringFormatterTest, HandlesBasicFormatting)
 187 {
 188     int value = 103;
 189     EXPECT_EQ("103", gmx::StringFormatter("%d") (value));
 190     EXPECT_EQ("null", gmx::StringFormatter("null") (value));
 191 }
 192
 193 /********************************************************************
 194  * Tests for formatAndJoin
 195  */
 196
 197 TEST(formatAndJoinTest, Works)
 198 {
 199     const char * const words[] = { "The", "quick", "brown", "fox" };
 200     EXPECT_EQ("The       .quick     .brown     .fox       ",
 201               gmx::formatAndJoin(gmx::ConstArrayRef<const char *>(words), ".",
 202                                  gmx::StringFormatter("%-10s")));
 203
 204     const int values[] = { 0, 1, 4 };
 205     EXPECT_EQ("0,1,4", gmx::formatAndJoin(gmx::ConstArrayRef<int>(values), ",",
 206                                           gmx::StringFormatter("%d")));
 207 }
 208
 209 /********************************************************************
 210  * Tests for joinStrings
 211  */
 212
 213 TEST(JoinStringsTest, Works)
 214 {
 215     const char * const               words[] = { "The", "quick", "brown", "fox" };
 216     gmx::ConstArrayRef<const char *> refToWords(words);
 217     EXPECT_EQ("The; quick; brown; fox", gmx::joinStrings(refToWords.begin(), refToWords.end(), "; "));
 218     EXPECT_EQ("The-quick-brown-fox", gmx::joinStrings(refToWords, "-"));
 219     EXPECT_EQ("The-quick-brown-fox", gmx::joinStrings(words, "-"));
 220 }
 221
 222 /********************************************************************
 223  * Tests for replaceAll() and replaceAllWords()
 224  */
 225
 226 TEST(ReplaceAllTest, HandlesEmptyStrings)
 227 {
 228     EXPECT_EQ("", gmx::replaceAll("", "aaa", "bbbb"));
 229     EXPECT_EQ("", gmx::replaceAllWords("", "aaa", "bbbb"));
 230 }
 231
 232 TEST(ReplaceAllTest, HandlesNoMatches)
 233 {
 234     const std::string text("Text with no matches");
 235     EXPECT_EQ(text, gmx::replaceAll(text, "aaa", "bbbb"));
 236     EXPECT_EQ(text, gmx::replaceAllWords(text, "aaa", "bbbb"));
 237 }
 238
 239 TEST(ReplaceAllTest, HandlesMatchesAtEnds)
 240 {
 241     EXPECT_EQ("bbbbtext", gmx::replaceAll("aaatext", "aaa", "bbbb"));
 242     EXPECT_EQ("textbbbb", gmx::replaceAll("textaaa", "aaa", "bbbb"));
 243     EXPECT_EQ("bbbb text", gmx::replaceAllWords("aaa text", "aaa", "bbbb"));
 244     EXPECT_EQ("text bbbb", gmx::replaceAllWords("text aaa", "aaa", "bbbb"));
 245 }
 246
 247 TEST(ReplaceAllTest, HandlesMultipleMatches)
 248 {
 249     const std::string text("Text aaa with multiple aaa matches");
 250     EXPECT_EQ("Text bbbb with multiple bbbb matches",
 251               gmx::replaceAll(text, "aaa", "bbbb"));
 252     EXPECT_EQ("Text bbbb with multiple bbbb matches",
 253               gmx::replaceAllWords(text, "aaa", "bbbb"));
 254 }
 255
 256 TEST(ReplaceAllTest, HandlesWordBoundaries)
 257 {
 258     const std::string text("Text aaax with one word aaa match");
 259     EXPECT_EQ("Text aaax with one word bbbb match",
 260               gmx::replaceAllWords(text, "aaa", "bbbb"));
 261 }
 262
 263 TEST(ReplaceAllTest, HandlesPossibleRecursiveMatches)
 264 {
 265     const std::string text("Text with recursive aaabbbbbb matches");
 266     EXPECT_EQ("Text with recursive aaaaaabbb matches",
 267               gmx::replaceAll(text, "aaabbb", "aaaaaa"));
 268 }
 269
 270 /********************************************************************
 271  * Tests for TextLineWrapper
 272  */
 273
 274 //! Simple test string for wrapping.
 275 const char g_wrapText[] = "A quick brown fox jumps over the lazy dog";
 276 //! Test string for wrapping with embedded line breaks.
 277 const char g_wrapText2[] = "A quick brown fox jumps\nover the lazy dog";
 278 //! Test string for wrapping with embedded line breaks and an empty line.
 279 const char g_wrapText3[] = "A quick brown fox jumps\n\nover the lazy dog";
 280 //! Test string for wrapping with a long word.
 281 const char g_wrapTextLongWord[]
 282     = "A quick brown fox jumps awordthatoverflowsaline over the lazy dog";
 283 //! Test string for wrapping with extra whitespace.
 284 const char g_wrapTextWhitespace[] = " A quick brown   fox jumps  \n over the lazy dog";
 285
 286 //! Test fixture for gmx::TextLineWrapper.
 287 typedef gmx::test::StringTestBase TextLineWrapperTest;
 288
 289 TEST_F(TextLineWrapperTest, HandlesEmptyStrings)
 290 {
 291     gmx::TextLineWrapper wrapper;
 292
 293     EXPECT_EQ("", wrapper.wrapToString(""));
 294     EXPECT_EQ("", wrapper.wrapToString("   "));
 295     EXPECT_TRUE(wrapper.wrapToVector("").empty());
 296     {
 297         std::vector<std::string> wrapped(wrapper.wrapToVector("   "));
 298         ASSERT_EQ(1U, wrapped.size());
 299         EXPECT_EQ("", wrapped[0]);
 300     }
 301 }
 302
 303 TEST_F(TextLineWrapperTest, HandlesTrailingWhitespace)
 304 {
 305     gmx::TextLineWrapper wrapper;
 306
 307     EXPECT_EQ("line", wrapper.wrapToString("line   "));
 308     EXPECT_EQ("line\n", wrapper.wrapToString("line   \n"));
 309
 310     wrapper.settings().setKeepFinalSpaces(true);
 311     EXPECT_EQ("line   ", wrapper.wrapToString("line   "));
 312     EXPECT_EQ("line   \n", wrapper.wrapToString("line   \n"));
 313 }
 314
 315 TEST_F(TextLineWrapperTest, HandlesTrailingNewlines)
 316 {
 317     gmx::TextLineWrapper wrapper;
 318
 319     EXPECT_EQ("line", wrapper.wrapToString("line"));
 320     EXPECT_EQ("line\n", wrapper.wrapToString("line\n"));
 321     EXPECT_EQ("line\n\n", wrapper.wrapToString("line\n\n"));
 322     EXPECT_EQ("\n", wrapper.wrapToString("\n"));
 323     EXPECT_EQ("\n\n", wrapper.wrapToString("\n\n"));
 324     {
 325         std::vector<std::string> wrapped(wrapper.wrapToVector("line"));
 326         ASSERT_EQ(1U, wrapped.size());
 327         EXPECT_EQ("line", wrapped[0]);
 328     }
 329     {
 330         std::vector<std::string> wrapped(wrapper.wrapToVector("line\n"));
 331         ASSERT_EQ(1U, wrapped.size());
 332         EXPECT_EQ("line", wrapped[0]);
 333     }
 334     {
 335         std::vector<std::string> wrapped(wrapper.wrapToVector("line\n\n"));
 336         ASSERT_EQ(2U, wrapped.size());
 337         EXPECT_EQ("line", wrapped[0]);
 338         EXPECT_EQ("", wrapped[1]);
 339     }
 340     {
 341         std::vector<std::string> wrapped(wrapper.wrapToVector("\n"));
 342         ASSERT_EQ(1U, wrapped.size());
 343         EXPECT_EQ("", wrapped[0]);
 344     }
 345     {
 346         std::vector<std::string> wrapped(wrapper.wrapToVector("\n\n"));
 347         ASSERT_EQ(2U, wrapped.size());
 348         EXPECT_EQ("", wrapped[0]);
 349         EXPECT_EQ("", wrapped[1]);
 350     }
 351 }
 352
 353 TEST_F(TextLineWrapperTest, WrapsCorrectly)
 354 {
 355     gmx::TextLineWrapper wrapper;
 356
 357     wrapper.settings().setLineLength(10);
 358     checkText(wrapper.wrapToString(g_wrapText), "WrappedAt10");
 359     std::vector<std::string> wrapped(wrapper.wrapToVector(g_wrapText));
 360     checker().checkSequence(wrapped.begin(), wrapped.end(), "WrappedToVector");
 361     wrapper.settings().setLineLength(13);
 362     checkText(wrapper.wrapToString(g_wrapText), "WrappedAt13");
 363     wrapper.settings().setLineLength(14);
 364     checkText(wrapper.wrapToString(g_wrapText), "WrappedAt14");
 365     checkText(wrapper.wrapToString(g_wrapTextLongWord), "WrappedWithLongWord");
 366 }
 367
 368 TEST_F(TextLineWrapperTest, WrapsCorrectlyWithExistingBreaks)
 369 {
 370     gmx::TextLineWrapper wrapper;
 371
 372     checkText(wrapper.wrapToString(g_wrapText2), "WrappedWithNoLimit");
 373     wrapper.settings().setLineLength(10);
 374     checkText(wrapper.wrapToString(g_wrapText2), "WrappedAt10");
 375     wrapper.settings().setLineLength(14);
 376     checkText(wrapper.wrapToString(g_wrapText2), "WrappedAt14");
 377 }
 378
 379 TEST_F(TextLineWrapperTest, HandlesIndent)
 380 {
 381     gmx::TextLineWrapper wrapper;
 382     wrapper.settings().setIndent(2);
 383
 384     checkText(wrapper.wrapToString(g_wrapText2), "WrappedWithNoLimit");
 385     wrapper.settings().setLineLength(16);
 386     checkText(wrapper.wrapToString(g_wrapText2), "WrappedAt14");
 387 }
 388
 389 TEST_F(TextLineWrapperTest, HandlesIndentWithEmptyLines)
 390 {
 391     gmx::TextLineWrapper wrapper;
 392     wrapper.settings().setIndent(2);
 393
 394     checkText(wrapper.wrapToString(g_wrapText3), "WrappedWithNoLimit");
 395     wrapper.settings().setLineLength(16);
 396     checkText(wrapper.wrapToString(g_wrapText3), "WrappedAt14");
 397 }
 398
 399 TEST_F(TextLineWrapperTest, HandlesHangingIndent)
 400 {
 401     gmx::TextLineWrapper wrapper;
 402     wrapper.settings().setFirstLineIndent(2);
 403     wrapper.settings().setIndent(4);
 404
 405     checkText(wrapper.wrapToString(g_wrapText2), "WrappedWithNoLimit");
 406     wrapper.settings().setLineLength(16);
 407     checkText(wrapper.wrapToString(g_wrapText2), "WrappedAt14/12");
 408 }
 409
 410 TEST_F(TextLineWrapperTest, HandlesContinuationCharacter)
 411 {
 412     gmx::TextLineWrapper wrapper;
 413     wrapper.settings().setFirstLineIndent(2);
 414     wrapper.settings().setIndent(4);
 415     wrapper.settings().setContinuationChar('\\');
 416
 417     wrapper.settings().setLineLength(16);
 418     checkText(wrapper.wrapToString(g_wrapText2), "WrappedAt14/12");
 419 }
 420
 421 TEST_F(TextLineWrapperTest, WrapsCorrectlyWithExtraWhitespace)
 422 {
 423     gmx::TextLineWrapper wrapper;
 424     wrapper.settings().setLineLength(14);
 425
 426     checkText(wrapper.wrapToString(g_wrapTextWhitespace),
 427               "WrappedAt14");
 428
 429     wrapper.settings().setKeepFinalSpaces(true);
 430     checkText(wrapper.wrapToString(g_wrapTextWhitespace),
 431               "WrappedAt14WithTrailingWhitespace");
 432 }
 433
 434 TEST(StringUtilityTest, ParseDigitsFromString)
 435 {
 436     using ::testing::ElementsAre;
 437     using ::testing::IsEmpty;
 438     EXPECT_THAT(parseDigitsFromString("01"), ElementsAre(0, 1));
 439     EXPECT_THAT(parseDigitsFromString("0,1"), ElementsAre(0, 1));
 440     EXPECT_THAT(parseDigitsFromString(",0,1"), ElementsAre(0, 1));
 441     EXPECT_THAT(parseDigitsFromString("0,1,"), ElementsAre(0, 1));
 442     EXPECT_THAT(parseDigitsFromString(",0,1,"), ElementsAre(0, 1));
 443     EXPECT_THAT(parseDigitsFromString(","), IsEmpty());
 444     EXPECT_THAT(parseDigitsFromString(",,"), IsEmpty());
 445     EXPECT_THAT(parseDigitsFromString(""), IsEmpty());
 446     EXPECT_THROW(parseDigitsFromString("a"), InvalidInputError);
 447     EXPECT_THROW(parseDigitsFromString("0a"), InvalidInputError);
 448 }
 449
 450 } // namespace
 451 } // namespace
 452 } // namespace