1 files changed, 99 insertions, 0 deletions
diff --git a/tests/Tests_String.h b/tests/Tests_String.h
new file mode 100644
index 0000000..542b6d8
--- /dev/null
+++ b/tests/Tests_String.h
@@ -0,0 +1,99 @@
+#include <cstring>
+#include "../doctest/doctest/doctest.h"
+#include "../src/Generic/String/String.h"
+
+TEST_SUITE_BEGIN("ClassString");
+
+TEST_SUITE("Constructors") {
+	TEST_CASE("Ctor_CreatesInternalArrayOfLength_WhenGivenCorrectLength") {
+		String s(5);
+
+		CHECK_EQ(strlen(s.get_cstr()), 5);
+	}
+	TEST_CASE("Ctor_CopiesValues_WhenGivenCorrectCString") {
+		String s("Testing string.");
+
+		CHECK_EQ(strcmp(s.get_cstr(), "Testing string."), 0);
+	}
+}
+
+TEST_SUITE("GettersAndSetters") {
+	TEST_CASE("CStrGetter_ReturnsCorrectPointer_WhenCreatedWithCString") {
+		String s("Testing string.");
+
+		CHECK_EQ(strcmp(s.get_cstr(), "Testing string."), 0);
+	}
+
+	TEST_CASE("LengthGetter_ReturnsCorrectLength_WhenCreatedWithLength") {
+		String s(5);
+
+		CHECK_EQ(s.get_length(), 5);
+	}
+	TEST_CASE("LengthGetter_ReturnsCorrectLength_WhenCreatedWithCString") {
+		String s("Testing string.");
+
+		CHECK_EQ(s.get_length(), strlen(s.get_cstr()));
+	}
+}
+
+TEST_SUITE("Operators") {
+	TEST_CASE("BracketsOperator_ReturnsCorrectCharacter_WhenGivenCorrectIndex") {
+		String s("Tesing string.");
+
+		unsigned index = 0;
+		char expectedCharacter = '\0';
+		SUBCASE("IndexIsZero") { index = 0; expectedCharacter = 'T'; }
+		SUBCASE("IndexIsSomewhereInTheMiddle") { index = 5; expectedCharacter = 'g'; }
+		SUBCASE("IndexIsLast") { index = 13; expectedCharacter = '.'; }
+		SUBCASE("IndexIsTerminatingZero") { index = 14; expectedCharacter = '\0'; }
+
+		CHECK_EQ(s[index], expectedCharacter);
+	}
+	TEST_CASE("BracketsOperator_SetsCharacter_WhenGivenCorrectIndexAndValue") {
+		String s("Tesing string.");
+
+		unsigned index = 0;
+		char replaceWith = 'W';
+		SUBCASE("IndexIsZero") { index = 0; }
+		SUBCASE("IndexIsSomewhereInTheMiddle") { index = 5; }
+		SUBCASE("IndexIsLast") { index = 13; }
+		s[index] = replaceWith;
+
+		CHECK_EQ(s[index], replaceWith);
+	}
+
+	TEST_CASE("PlusEqualOperator_AppendsProperlyCString_WhenGivenCorrectStringAndCreatedWithCstr") {
+		String s("Testing");
+		s += " string.";
+
+		CHECK_EQ(strcmp(s.get_cstr(), "Testing string."), 0);
+	}
+	TEST_CASE("PlusEqualOperator_AppendsProperlyNumber_WhenGivenCorrectNumberAndCreatedWithCstr") {
+		String s("Testing");
+		s += 15684;
+
+		CHECK_EQ(strcmp(s.get_cstr(), "Testing15684"), 0);
+	}
+}
+
+TEST_SUITE("compare()") {
+	TEST_CASE("compare_ReturnsSameResultAsstrcmp_WhenFirstIsLessThanSecond") {
+		String s1("Test"), s2("test");
+
+		CHECK_LT(s1.compare(s2), 0);
+		CHECK_LT(strcmp("Test", "test"), 0);
+	}
+	TEST_CASE("compare_ReturnsSameResultAsstrcmp_WhenFirstIsGreaterThanSecond") {
+		String s1("test"), s2("Test");
+
+		CHECK_GT(s1.compare(s2), 0);
+		CHECK_GT(strcmp("test", "Test"), 0);
+	}
+	TEST_CASE("compare_ReturnsSameResultAsstrcmp_WhenFirstIsEqualToSecond") {
+		String s1("test"), s2("test");
+
+		CHECK_EQ(s1.compare(s2), strcmp("test", "test"));
+	}
+}
+
+TEST_SUITE_END();