diff --git a/test/unittest/shellmatta_utils/test_utils_removeChars.cpp b/test/unittest/shellmatta_utils/test_utils_removeChars.cpp
index 4eb9b15..f4d9e02 100644
--- a/test/unittest/shellmatta_utils/test_utils_removeChars.cpp
+++ b/test/unittest/shellmatta_utils/test_utils_removeChars.cpp
@@ -28,7 +28,7 @@ TEST_CASE("shellmatta_utils_removeChars_nothing_removed"){
     inst.cursor = 20u;
     inst.inputCount = 20u;
 
-    char buffer[20] = "abcdefghijklmnopqr\0";
+    char buffer[20] = "abcdefghijklmnopqr";
     inst.buffer = buffer;
     inst.bufferSize = 20u;
 
@@ -36,12 +36,12 @@ TEST_CASE("shellmatta_utils_removeChars_nothing_removed"){
     
     CHECK( inst.cursor == 20u);
     CHECK( inst.inputCount == 20);
-    REQUIRE(strncmp("abcdefghijklmnopqr\0", buffer, sizeof(buffer)) == 0);
+    REQUIRE(strncmp("abcdefghijklmnopqr", buffer, sizeof(buffer)) == 0);
 }
 
 TEST_CASE("shellmatta_utils_removeChars_backspace_false"){
     shellmatta_instance_t inst;
-    char buffer[20] = "abcdefghijklmnopqr\0";
+    char buffer[20] = "abcdefghijklmnopqr";
     memset(&inst, 0, sizeof(inst));
     uint32_t length = 5u;
     bool backspace = false;
@@ -61,12 +61,12 @@ TEST_CASE("shellmatta_utils_removeChars_backspace_false"){
 
     CHECK( inst.cursor == 20u);
     CHECK( inst.inputCount == 20);
-    REQUIRE(strncmp("abcdefghijklmnopqr\0", buffer, sizeof(buffer)) == 0);
+    REQUIRE(strncmp("abcdefghijklmnopqr", buffer, sizeof(buffer)) == 0);
 }
 
 TEST_CASE("shellmatta_utils_removeChars_remove_five"){
     shellmatta_instance_t inst;
-    char buffer[20] = "abcdefghijklmnopqr\0";
+    char buffer[20] = "abcdefghijklmnopqr";
 
     memset(&inst, 0, sizeof(inst));
 
@@ -88,12 +88,12 @@ TEST_CASE("shellmatta_utils_removeChars_remove_five"){
 
     CHECK( inst.cursor == 5u);
     CHECK( inst.inputCount == 15u);
-    REQUIRE(strncmp("abcdeklmnopqr\0", buffer, sizeof(buffer)) == 0);
+    REQUIRE(strncmp("abcdeklmnopqr", buffer, sizeof(buffer)) == 0);
 }
 
 TEST_CASE("shellmatta_utils_removeChars_length_greater_than_CursorPos"){
     shellmatta_instance_t inst;
-    char buffer[20] = "abcdefghijklmnopqr\0";
+    char buffer[20] = "abcdefghijklmnopqr";
 
     memset(&inst, 0, sizeof(inst));
 
@@ -115,5 +115,86 @@ TEST_CASE("shellmatta_utils_removeChars_length_greater_than_CursorPos"){
 
     CHECK( inst.cursor == 0u);
     CHECK( inst.inputCount == 10u);
-    REQUIRE(strncmp("klmnopqr\0", buffer, sizeof(buffer)) == 0);
-}
\ No newline at end of file
+    REQUIRE(strncmp("klmnopqr", buffer, sizeof(buffer)) == 0);
+}
+
+TEST_CASE("shellmatta_utils_removeChars_remove_chars_in_the_middle_of_the_buffer_backspace_false"){
+    shellmatta_instance_t inst;
+    char buffer[20] = "abcdefghijklmnopqr";
+
+    memset(&inst, 0, sizeof(inst));
+
+    inst.write = writeFct;
+    write_callCnt = 0u;
+    memset(write_data, 0, sizeof(write_data));
+    write_idx = 0u;
+
+    uint32_t length = 5u;
+    bool backspace = false;
+
+    inst.cursor = 10u;
+    inst.inputCount = 20u;
+
+    inst.bufferSize = 20u;
+    inst.buffer = buffer;
+
+    utils_removeChars(&inst, length, backspace);
+
+    CHECK( inst.cursor == 10u);
+    CHECK( inst.inputCount == 20u);
+    REQUIRE(strncmp("abcdefghijklmnopqr", buffer, sizeof(buffer)) == 0);
+}
+
+TEST_CASE("shellmatta_utils_removeChars_remove_more_chars_in_middle_of_buffer_than_are_present_backspace_false"){
+    shellmatta_instance_t inst;
+    char buffer[20] = "abcdefghijklmnopqr";
+
+    memset(&inst, 0, sizeof(inst));
+
+    inst.write = writeFct;
+    write_callCnt = 0u;
+    memset(write_data, 0, sizeof(write_data));
+    write_idx = 0u;
+
+    uint32_t length = 15u;
+    bool backspace = false;
+
+    inst.cursor = 10u;
+    inst.inputCount = 20u;
+
+    inst.bufferSize = 20u;
+    inst.buffer = buffer;
+
+    utils_removeChars(&inst, length, backspace);
+    
+    CHECK( inst.cursor == 10u);
+    CHECK( inst.inputCount == 20u);
+    REQUIRE(strncmp("abcdefghijklmnopqr", buffer, sizeof(buffer)) == 0);
+}
+
+TEST_CASE("shellmatta_utils_removeChars_curser_outside_buffer"){
+    shellmatta_instance_t inst;
+    char buffer[20] = "abcdefghijklmnopqr";
+
+    memset(&inst, 0, sizeof(inst));
+
+    inst.write = writeFct;
+    write_callCnt = 0u;
+    memset(write_data, 0, sizeof(write_data));
+    write_idx = 0u;
+
+    uint32_t length = 15u;
+    bool backspace = false;
+
+    inst.cursor = 21u;
+    inst.inputCount = 20u;
+
+    inst.bufferSize = 20u;
+    inst.buffer = buffer;
+
+    utils_removeChars(&inst, length, backspace);
+    
+    CHECK( inst.cursor == 21u);
+    CHECK( inst.inputCount == 20u);
+    REQUIRE(strncmp("abcdefghijklmnopqr", buffer, sizeof(buffer)) == 0);
+}