diff --git a/tests/core/pistringTest.cpp b/tests/core/pistringTest.cpp
index 39652773..f2f78486 100644
--- a/tests/core/pistringTest.cpp
+++ b/tests/core/pistringTest.cpp
@@ -214,3 +214,63 @@ TEST(PIString_Tests, operator_compare_pistring_true){
 	PIString str2 = "testing";
 	ASSERT_TRUE(str1 == str2);
 }
+
+TEST(PIString_Tests, operator_compare_pistring_false){
+	PIString str1 = "tes";
+	PIString str2 = "testing";
+	ASSERT_FALSE(str1 == str2);
+}
+
+TEST(PIString_Tests, operator_compare_pichar_true){
+	PIString str1 = "t";
+	PIChar str2 = "t";
+	ASSERT_TRUE(str1 == str2);
+}
+
+TEST(PIString_Tests, operator_compare_pichar_false){
+	PIString str1 = "t";
+	PIChar str2 = "p";
+	ASSERT_FALSE(str1 == str2);
+}
+
+TEST(PIString_Tests, operator_compare_char_true){
+	PIString str1 = "test";
+	char str2[] = "test";
+	ASSERT_TRUE(str1 == str2);
+}
+
+TEST(PIString_Tests, operator_compare_char_false){
+	PIString str1 = "t";
+	char str2[] = "test";
+	ASSERT_FALSE(str1 == str2);
+}
+
+TEST(PIString_Tests, operator_enq_compare_pistring_false){
+	PIString str1 = "testing";
+	PIString str2 = "testing";
+	ASSERT_FALSE(str1 != str2);
+}
+
+TEST(PIString_Tests, operator_enq_compare_pistring_true){
+	PIString str1 = "tes";
+	PIString str2 = "testing";
+	ASSERT_TRUE(str1 != str2);
+}
+
+TEST(PIString_Tests, operator_enq_compare_pichar_false){
+	PIString str1 = "t";
+	PIChar str2 = "t";
+	ASSERT_FALSE(str1 != str2);
+}
+
+TEST(PIString_Tests, operator_enq_compare_pichar_true){
+	PIString str1 = "t";
+	PIChar str2 = "p";
+	ASSERT_TRUE(str1 != str2);
+}
+
+TEST(PIString_Tests, operator_enq_compare_char_false){
+	PIString str1 = "test";
+	char str2[] = "test";
+	ASSERT_FALSE(str1 != str2);
+}