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Adds additional tests for RegEx class #82225

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Sep 26, 2023
Merged

Adds additional tests for RegEx class #82225

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80 changes: 76 additions & 4 deletions modules/regex/tests/test_regex.h
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Original file line number Diff line number Diff line change
Expand Up @@ -83,9 +83,16 @@ TEST_CASE("[RegEx] Searching") {
REQUIRE(match != nullptr);
CHECK(match->get_string(0) == "ea");

match = re.search(s, 1, 2);
REQUIRE(match != nullptr);
CHECK(match->get_string(0) == "e");
match = re.search(s, 2, 4);
REQUIRE(match != nullptr);
CHECK(match->get_string(0) == "a");
match = re.search(s, 3, 5);
CHECK(match == nullptr);
match = re.search(s, 6, 2);
CHECK(match == nullptr);

const Array all_results = re.search_all(s);
CHECK(all_results.size() == 2);
Expand All @@ -103,11 +110,45 @@ TEST_CASE("[RegEx] Searching") {
}

TEST_CASE("[RegEx] Substitution") {
String s = "Double all the vowels.";
const String s1 = "Double all the vowels.";

RegEx re("(?<vowel>[aeiou])");
REQUIRE(re.is_valid());
CHECK(re.sub(s, "$0$vowel", true) == "Doouublee aall thee vooweels.");
RegEx re1("(?<vowel>[aeiou])");
REQUIRE(re1.is_valid());
CHECK(re1.sub(s1, "$0$vowel", true) == "Doouublee aall thee vooweels.");

const String s2 = "Substitution with group.";

RegEx re2("Substitution (.+)");
REQUIRE(re2.is_valid());
CHECK(re2.sub(s2, "Test ${1}") == "Test with group.");

const String s3 = "Useless substitution";

RegEx re3("Anything");
REQUIRE(re3.is_valid());
CHECK(re3.sub(s3, "Something") == "Useless substitution");

const String s4 = "acacac";

RegEx re4("(a)(b){0}(c)");
REQUIRE(re4.is_valid());
CHECK(re4.sub(s4, "${1}.${3}.", true) == "a.c.a.c.a.c.");
}

TEST_CASE("[RegEx] Substitution with empty input and/or replacement") {
const String s1 = "";
const String s2 = "gogogo";

RegEx re1("");
REQUIRE(re1.is_valid());
CHECK(re1.sub(s1, "") == "");
CHECK(re1.sub(s1, "a") == "a");
CHECK(re1.sub(s2, "") == "gogogo");

RegEx re2("go");
REQUIRE(re2.is_valid());
CHECK(re2.sub(s2, "") == "gogo");
CHECK(re2.sub(s2, "", true) == "");
}

TEST_CASE("[RegEx] Uninitialized use") {
Expand Down Expand Up @@ -150,6 +191,37 @@ TEST_CASE("[RegEx] Invalid end position") {

CHECK(re.sub(s, "", true, 0, 10) == "Gdt");
}

TEST_CASE("[RegEx] Get match string list") {
const String s = "Godot Engine";

RegEx re("(Go)(dot)");
Ref<RegExMatch> match = re.search(s);
REQUIRE(match != nullptr);
PackedStringArray result;
result.append("Godot");
result.append("Go");
result.append("dot");
CHECK(match->get_strings() == result);
}

TEST_CASE("[RegEx] Match start and end positions") {
const String s = "Whole pattern";

RegEx re1("pattern");
REQUIRE(re1.is_valid());
Ref<RegExMatch> match = re1.search(s);
REQUIRE(match != nullptr);
CHECK(match->get_start(0) == 6);
CHECK(match->get_end(0) == 13);

RegEx re2("(?<vowel>[aeiou])");
REQUIRE(re2.is_valid());
match = re2.search(s);
REQUIRE(match != nullptr);
CHECK(match->get_start("vowel") == 2);
CHECK(match->get_end("vowel") == 3);
}
} // namespace TestRegEx

#endif // TEST_REGEX_H