diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..11e0982
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,29 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "debug unittest",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/output/test/unittest/unittest",
+            "args": [],
+            "stopAtEntry": false,
+            "cwd": "${workspaceFolder}",
+            "environment": [],
+            "externalConsole": false,
+            "MIMode": "gdb",
+            "setupCommands": [
+                {
+                    "description": "Enable pretty-printing for gdb",
+                    "text": "-enable-pretty-printing",
+                    "ignoreFailures": true
+                }
+            ],
+            "preLaunchTask": "make test",
+            "miDebuggerPath": "/usr/bin/gdb"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
new file mode 100644
index 0000000..30e372f
--- /dev/null
+++ b/.vscode/tasks.json
@@ -0,0 +1,40 @@
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "make example",
+            "type": "shell",
+            "command": "make example",
+            "problemMatcher": [
+                "$gcc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            }
+        },
+        {
+            "label": "make clean",
+            "type": "shell",
+            "command": "make clean",
+            "problemMatcher": [
+                "$gcc"
+            ],
+            "group": "build"
+        },
+        {
+            "label": "make unittest",
+            "type": "shell",
+            "command": "make unittest",
+            "problemMatcher": [
+                "$gcc"
+            ],
+            "group": {
+                "kind": "test",
+                "isDefault": true
+            }
+        }
+    ]
+}
\ No newline at end of file
diff --git a/settings/doxygen/doxyfile b/cfg/doxygen/doxyfile
similarity index 100%
rename from settings/doxygen/doxyfile
rename to cfg/doxygen/doxyfile
diff --git a/makefile b/makefile
index 73ee68f..8e014f9 100644
--- a/makefile
+++ b/makefile
@@ -17,19 +17,24 @@ SOURCES :=  src/shellmatta.c                \
             src/shellmatta_history.c        \
             src/shellmatta_utils.c          \
             src/shellmatta_escape.c
-            
+
 INCLUDES    := api .
 
-UNITTEST_SOURCES := test/unittest/test_main.cpp                                    \
-                    test/unittest/shellmatta_utils/test_utils_writeEcho.cpp        \
-                    test/unittest/shellmatta_utils/test_utils_shellItoa.cpp        \
-                    test/unittest/shellmatta_utils/test_utils_saveCursorPos.cpp    \
-                    test/unittest/shellmatta_utils/test_utils_restoreCursorPos.cpp \
-                    test/unittest/shellmatta_utils/test_utils_eraseLine.cpp        \
-                    test/unittest/shellmatta_utils/test_utils_rewindCursor.cpp     \
-                    test/unittest/shellmatta_utils/test_utils_forwardCursor.cpp    \
-                    test/unittest/shellmatta_utils/test_utils_clearInput.cpp       \
-                    test/unittest/shellmatta_utils/test_utils_insertChars.cpp
+UNITTEST_SOURCES := test/unittest/test_main.cpp                                         \
+                    test/unittest/shellmatta_utils/test_utils_writeEcho.cpp             \
+                    test/unittest/shellmatta_utils/test_utils_shellItoa.cpp             \
+                    test/unittest/shellmatta_utils/test_utils_saveCursorPos.cpp         \
+                    test/unittest/shellmatta_utils/test_utils_restoreCursorPos.cpp      \
+                    test/unittest/shellmatta_utils/test_utils_eraseLine.cpp             \
+                    test/unittest/shellmatta_utils/test_utils_rewindCursor.cpp          \
+                    test/unittest/shellmatta_utils/test_utils_forwardCursor.cpp         \
+                    test/unittest/shellmatta_utils/test_utils_clearInput.cpp            \
+                    test/unittest/shellmatta_utils/test_utils_insertChars.cpp           \
+                    test/unittest/shellmatta_utils/test_utils_terminateInput.cpp        \
+                    test/unittest/shellmatta_autocomplete/test_autocomplete_run.cpp     \
+                    test/unittest/shellmatta_escape/test_escape_processArrowKeys.cpp    \
+                    test/unittest/shellmatta_history/test_appendHistoryByte.cpp         \
+                    test/unittest/shellmatta/test_shellmatta_doInit.cpp
 
 INTEGRATIONTEST_SOURCES :=  test/integrationtest/test_main.cpp          \
                             test/integrationtest/test_integration.cpp
@@ -38,12 +43,12 @@ UNITTEST_CPPOBJ  := $(patsubst %.cpp,$(OBJ_DIR)%.o,$(UNITTEST_SOURCES))
 
 INTEGRATIONTEST_CPPOBJ  := $(patsubst %.cpp,$(OBJ_DIR)%.o,$(INTEGRATIONTEST_SOURCES))
 
-CFLAGS      := $(INCLUDES:%=-I%) -g
-TESTFLAGS   := $(INCLUDES:%=-I%) -g -fprofile-arcs -ftest-coverage
+CFLAGS      := $(INCLUDES:%=-I%) -g -Wall -Werror
+TESTFLAGS   := $(INCLUDES:%=-I%) -g -Wall -Werror -fprofile-arcs -ftest-coverage
 TESTLFLAGS  := -fprofile-arcs -Wl,--allow-multiple-definition
 
 DEPEND      = -MT $@ -MF "$(@:%.o=%.d)" -MG -MM
-            
+			
 COBJ    := $(patsubst %.c,$(OBJ_DIR)%.o,$(SOURCES))
 
 EXAMPLE_SOURCES := example/main.c
@@ -69,20 +74,31 @@ help:
 
 test: unittest integrationtest
 
+cppcheck:
+	- @mkdir -p output/cppcheck/html
+	cppcheck --addon=/usr/bin/misra.py --enable=all --template=gcc --cppcheck-build-dir=output/cppcheck $(SOURCES)
+	cppcheck --addon=/usr/bin/misra.py --enable=all --template=gcc --cppcheck-build-dir=output/cppcheck $(SOURCES) --xml 2>output/cppcheck/cppcheck.xml
+	cppcheck-htmlreport --file=output/cppcheck/cppcheck.xml --title="Shellmatta" --report-dir=output/cppcheck/html
+
 unittest: $(UNITTEST_TARGET)
 	- @mkdir -p output/test/unittest/report
 	@echo running test:
+	@# remove coverage from former run
+	@-find . -name "*.gcda" -type f -delete
 	-$(UNITTEST_TARGET)
-	#gcov -o output/test $(TEST_CPPOBJ) -r
+	@#gcov -o output/test/unittest $(UNITTEST_CPPOBJ) -r src
+
+	@# remove report from former run
+	-rm -rf $(OBJ_DIR)test/unittest/report/*
 	gcovr --html-details --output $(OBJ_DIR)test/unittest/report/report.html output/test/unittest -f src -f api
-	#-rm *.gcov
+	@#-rm *.gcov
 	
 integrationtest: $(INTEGRATIONTEST_TARGET)
 	- @mkdir -p output/test/integrationtest/report
 	@echo running test:
 	-$(INTEGRATIONTEST_TARGET)
 	#gcov -o output/test $(TEST_CPPOBJ) -r
-	gcovr --html-details --output $(OBJ_DIR)test/integrationtest/report/report.html output/test/integrationtest -f src -f api
+	gcovr --html-details --output $(OBJ_DIR)test/integrationtest/report/report.html output/src -f src -f api
 	#-rm *.gcov
 	
 example: $(EXAMPLE_TARGET)
@@ -91,7 +107,7 @@ example: $(EXAMPLE_TARGET)
 doc:
 	- @mkdir -p output/doc/html
 	- @mkdir -p output/doc/latex
-	doxygen settings/doxygen/doxyfile
+	doxygen cfg/doxygen/doxyfile
 	
 clean:
 	- rm -rf $(OBJ_DIR)
diff --git a/src/shellmatta_utils.c b/src/shellmatta_utils.c
index 9993e0f..2009f0c 100644
--- a/src/shellmatta_utils.c
+++ b/src/shellmatta_utils.c
@@ -69,7 +69,7 @@ uint32_t utils_shellItoa(int32_t value, char *buffer, uint32_t base)
         do
         {
             digitValue = (char) (value % base);
-            tempBuffer[i] = (digitValue < 10u) ? ('0' + digitValue) : (('A' - 10) + digitValue);
+            tempBuffer[i] = (digitValue < 10) ? ('0' + digitValue) : (('A' - 10) + digitValue);
             value /= base;
             i ++;
         }while(value > 0);
@@ -327,7 +327,7 @@ static shellmatta_retCode_t helpCmdFct(shellmatta_handle_t handle, const char *a
 
     return ret;
 }
-shellmatta_cmd_t helpCmd = {"help", "h", "Print this help text", "help", helpCmdFct, NULL};
+shellmatta_cmd_t helpCmd = {(char*)"help", (char*)"h", (char*)"Print this help text", (char*)"help", helpCmdFct, NULL};
 
 /**
  * @brief       terminates an input and prints the prompt again
diff --git a/test/integrationtest/test_integration.cpp b/test/integrationtest/test_integration.cpp
index 2d19751..7874c7e 100644
--- a/test/integrationtest/test_integration.cpp
+++ b/test/integrationtest/test_integration.cpp
@@ -7,6 +7,8 @@ extern "C" {
 static uint32_t write_callCnt = 0u;
 static char write_data[1024];
 static uint32_t write_length;
+static const char *doSomethingArguments;
+static uint32_t doSomethingLength;
 
 static shellmatta_retCode_t writeFct(const char* data, uint32_t length)
 {
@@ -24,10 +26,12 @@ static shellmatta_retCode_t writeFct(const char* data, uint32_t length)
 
 static shellmatta_retCode_t doSomething(shellmatta_handle_t handle, const char *arguments, uint32_t length)
 {
-
+    doSomethingArguments = arguments;
+    doSomethingLength = length;
+    shellmatta_printf(handle, "%s - length: %u", arguments, length);
     return SHELLMATTA_OK;
 }
-shellmatta_cmd_t doSomethingCmd = {"doSomething", "do", "Function does something", "use me, please", doSomething, NULL};
+shellmatta_cmd_t doSomethingCmd = {(char*)"doSomething", (char*)"do", (char*)"Function does something", (char*)"use me, please", doSomething, NULL};
 
 
 TEST_CASE( "shellmatta empty function" ) {
@@ -36,7 +40,7 @@ TEST_CASE( "shellmatta empty function" ) {
     shellmatta_handle_t handle;
     char buffer[1024];
     char historyBuffer[1024];
-    char *dummyData =   "\r\nshellmatta->";
+    char *dummyData =   (char*)"\r\nshellmatta->";
 
     shellmatta_doInit(  &inst,
                         &handle,
@@ -52,7 +56,7 @@ TEST_CASE( "shellmatta empty function" ) {
     memset(write_data, 0, sizeof(write_data));
     write_length = 0u;
 
-    shellmatta_processData(handle, "\r", 1);
+    shellmatta_processData(handle, (char*)"\r", 1);
 
     CHECK( write_length == 14u);
     REQUIRE( strcmp(dummyData, write_data) == 0);
@@ -65,7 +69,7 @@ TEST_CASE( "shellmatta help function" ) {
     shellmatta_handle_t handle;
     char buffer[1024];
     char historyBuffer[1024];
-    char *dummyData =   "h\r\n"
+    char *dummyData =   (char*)"h\r\n"
                         "doSomething  do  Function does something  use me, please\r\n"
                         "help         h   Print this help text     help\r\n"
                         "\r\nshellmatta->";
@@ -85,7 +89,7 @@ TEST_CASE( "shellmatta help function" ) {
     memset(write_data, 0, sizeof(write_data));
     write_length = 0u;
 
-    shellmatta_processData(handle, "h\r", 2);
+    shellmatta_processData(handle, (char*)"h\r", 2);
 
     CHECK( write_length == 123u);
     CHECK( strcmp(dummyData, write_data) == 0);
@@ -95,12 +99,12 @@ TEST_CASE( "shellmatta help function" ) {
     memset(write_data, 0, sizeof(write_data));
     write_length = 0u;
 
-    dummyData =     "h 564 321 56 465 46\r\n"
+    dummyData =     (char*)"h 564 321 56 465 46\r\n"
                     "doSomething  do  Function does something  use me, please\r\n"
                     "help         h   Print this help text     help\r\n"
                     "\r\nshellmatta->";
 
-    shellmatta_processData(handle, "h 564 321 56 465 46\r", 20);
+    shellmatta_processData(handle, (char*)"h 564 321 56 465 46\r", 20);
 
     CHECK( write_length == 141u);
     CHECK( strcmp(dummyData, write_data) == 0);
@@ -110,13 +114,50 @@ TEST_CASE( "shellmatta help function" ) {
     memset(write_data, 0, sizeof(write_data));
     write_length = 0u;
 
-    dummyData = "hr\r\n"
+    dummyData = (char*)"hr\r\n"
                 "Command: hr not found"
                 "\r\nshellmatta->";
 
-    shellmatta_processData(handle, "hr\r", 3);
+    shellmatta_processData(handle, (char*)"hr\r", 3);
 
     CHECK( write_length == 39u);
     REQUIRE( strcmp(dummyData, write_data) == 0);
 }
 
+
+
+TEST_CASE( "shellmatta heredoc test" ) {
+
+    shellmatta_instance_t inst;
+    shellmatta_handle_t handle;
+    char buffer[1024];
+    char historyBuffer[1024];
+    char *dummyData =   (char*)"do this \r\n"
+                        "asdf\r\n"
+                        "1234";
+
+    shellmatta_doInit(  &inst,
+                        &handle,
+                        buffer,
+                        sizeof(buffer),
+                        historyBuffer,
+                        sizeof(historyBuffer),
+                        "shellmatta->",
+                        NULL,
+                        writeFct);
+    shellmatta_addCmd(handle, &doSomethingCmd);
+
+    doSomethingArguments = NULL;
+    doSomethingLength = 0u;
+
+    shellmatta_processData(handle, (char*)"do this << EOF\r\n"
+                                    "asdf\r\n"
+                                    "1234\r\n"
+                                    "EOF\r\n"
+                                , 34);
+
+
+
+    CHECK( doSomethingLength == 20u);
+    REQUIRE( strcmp(dummyData, doSomethingArguments) == 0);
+}
diff --git a/test/unittest/shellmatta/test_shellmatta_doInit.cpp b/test/unittest/shellmatta/test_shellmatta_doInit.cpp
new file mode 100644
index 0000000..cf680be
--- /dev/null
+++ b/test/unittest/shellmatta/test_shellmatta_doInit.cpp
@@ -0,0 +1,14 @@
+#include "test/framework/catch.hpp"
+#include "src/shellmatta.c"
+#include <string.h>
+
+TEST_CASE( "shellmatta dummy" ) {
+
+    shellmatta_instance_t inst;
+    //shellmatta_handle_t handle;
+    inst.inputCount = 0u;
+
+    //shellmatta_doInit(&inst, &handle, )
+
+    REQUIRE( inst.inputCount == 0u);
+}
diff --git a/test/unittest/shellmatta_autocomplete/test_autocomplete_run.cpp b/test/unittest/shellmatta_autocomplete/test_autocomplete_run.cpp
new file mode 100644
index 0000000..a114c80
--- /dev/null
+++ b/test/unittest/shellmatta_autocomplete/test_autocomplete_run.cpp
@@ -0,0 +1,13 @@
+#include "test/framework/catch.hpp"
+#include "src/shellmatta_autocomplete.c"
+#include <string.h>
+
+TEST_CASE( "shellmatta_autocomplete_run dummy" ) {
+
+    shellmatta_instance_t inst;
+    inst.inputCount = 0u;
+
+    autocomplete_run(&inst);
+
+    REQUIRE( inst.inputCount == 0u);
+}
diff --git a/test/unittest/shellmatta_escape/test_escape_processArrowKeys.cpp b/test/unittest/shellmatta_escape/test_escape_processArrowKeys.cpp
new file mode 100644
index 0000000..1373147
--- /dev/null
+++ b/test/unittest/shellmatta_escape/test_escape_processArrowKeys.cpp
@@ -0,0 +1,13 @@
+#include "test/framework/catch.hpp"
+#include "src/shellmatta_escape.c"
+#include <string.h>
+
+TEST_CASE( "shellmatta_escape dummy" ) {
+
+    shellmatta_instance_t inst;
+    inst.inputCount = 0u;
+
+    escape_processArrowKeys(&inst);
+
+    REQUIRE( inst.inputCount == 0u);
+}
diff --git a/test/unittest/shellmatta_history/test_appendHistoryByte.cpp b/test/unittest/shellmatta_history/test_appendHistoryByte.cpp
new file mode 100644
index 0000000..4fc3fe2
--- /dev/null
+++ b/test/unittest/shellmatta_history/test_appendHistoryByte.cpp
@@ -0,0 +1,13 @@
+#include "test/framework/catch.hpp"
+#include "src/shellmatta_history.c"
+#include <string.h>
+
+TEST_CASE( "shellmatta_history dummy" ) {
+
+    shellmatta_instance_t inst;
+    inst.inputCount = 0u;
+
+    //appendHistoryByte(&inst, 'a');
+
+    REQUIRE( inst.inputCount == 0u);
+}
diff --git a/test/unittest/shellmatta_utils/test_utils_clearInput.cpp b/test/unittest/shellmatta_utils/test_utils_clearInput.cpp
index fc1c0cb..0c730cc 100644
--- a/test/unittest/shellmatta_utils/test_utils_clearInput.cpp
+++ b/test/unittest/shellmatta_utils/test_utils_clearInput.cpp
@@ -2,7 +2,7 @@
 #include "src/shellmatta_utils.c"
 #include <string.h>
 
-shellmatta_retCode_t writeFct(const char* data, uint32_t length)
+static shellmatta_retCode_t writeFct(const char* data, uint32_t length)
 {
     return SHELLMATTA_OK;
 }
diff --git a/test/unittest/shellmatta_utils/test_utils_eraseLine.cpp b/test/unittest/shellmatta_utils/test_utils_eraseLine.cpp
index a4c4543..b5a93c1 100644
--- a/test/unittest/shellmatta_utils/test_utils_eraseLine.cpp
+++ b/test/unittest/shellmatta_utils/test_utils_eraseLine.cpp
@@ -19,7 +19,6 @@ TEST_CASE( "shellmatta_utils_eraseLine" ) {
 
     shellmatta_instance_t inst;
     char buffer[20];
-    char dummyData[29];
 
     inst.buffer = buffer;
     inst.bufferSize = 20;
diff --git a/test/unittest/shellmatta_utils/test_utils_forwardCursor.cpp b/test/unittest/shellmatta_utils/test_utils_forwardCursor.cpp
index 31d0672..49a7f2b 100644
--- a/test/unittest/shellmatta_utils/test_utils_forwardCursor.cpp
+++ b/test/unittest/shellmatta_utils/test_utils_forwardCursor.cpp
@@ -19,7 +19,6 @@ TEST_CASE( "shellmatta_utils_forwardCursor normal" ) {
 
     shellmatta_instance_t inst;
     char buffer[20];
-    char dummyData[29];
 
     inst.buffer = buffer;
     inst.bufferSize = 20;
@@ -44,7 +43,6 @@ TEST_CASE( "shellmatta_utils_forwardCursor normal echo off" ) {
 
     shellmatta_instance_t inst;
     char buffer[20];
-    char dummyData[29];
 
     inst.buffer = buffer;
     inst.bufferSize = 20;
@@ -70,7 +68,6 @@ TEST_CASE( "shellmatta_utils_forwardCursor forward by 12 with cursor at 5 and in
 
     shellmatta_instance_t inst;
     char buffer[20];
-    char dummyData[29];
 
     inst.buffer = buffer;
     inst.bufferSize = 20;
@@ -95,7 +92,6 @@ TEST_CASE( "shellmatta_utils_forwardCursor forward by 0" ) {
 
     shellmatta_instance_t inst;
     char buffer[20];
-    char dummyData[29];
 
     inst.buffer = buffer;
     inst.bufferSize = 20;
diff --git a/test/unittest/shellmatta_utils/test_utils_insertChars.cpp b/test/unittest/shellmatta_utils/test_utils_insertChars.cpp
index 30345d6..91aa3f4 100644
--- a/test/unittest/shellmatta_utils/test_utils_insertChars.cpp
+++ b/test/unittest/shellmatta_utils/test_utils_insertChars.cpp
@@ -2,26 +2,120 @@
 #include "src/shellmatta_utils.c"
 #include <string.h>
 
-shellmatta_retCode_t writeFct(const char* data, uint32_t length)
+static uint32_t write_callCnt = 0u;
+static char write_data[20];
+static uint32_t write_idx;
+
+static shellmatta_retCode_t writeFct(const char* data, uint32_t length)
 {
+    write_callCnt ++;
+    strncpy(&write_data[write_idx], data, length);
+    write_idx += length;
     return SHELLMATTA_OK;
 }
 
 TEST_CASE( "shellmatta_insertChars normal call" ) {
 
     shellmatta_instance_t inst;
-    char buffer[20];
+    char buffer[20] = "abcdefghij\0\0\0\0\0\0\0\0\0";
 
     inst.buffer = buffer;
     inst.bufferSize = 20;
     inst.cursor = 8;
     inst.inputCount = 10;
+    inst.echoEnabled = true;
 
     inst.write = writeFct;
 
-    utils_insertChars(&inst, "blksdflsd kfjlk", 4);
+    write_callCnt = 0u;
+    memset(write_data, 0, sizeof(write_data));
+    write_idx = 0u;
+
+    utils_insertChars(&inst, (char*)"blksdflsd kfjlk", 4u);
 
     CHECK( inst.cursor == 12);
-    REQUIRE( inst.inputCount == 14);
+    CHECK( inst.inputCount == 14);
+    CHECK( write_callCnt == 5u );
+    CHECK( strncmp("blks\e[K\e[sij\e[u", write_data, 15u) == 0);
+    REQUIRE( strncmp("abcdefghblksij\0\0\0\0\0\0\0", buffer, sizeof(buffer)) == 0);
 }
 
+TEST_CASE( "shellmatta_insertChars overwrite" ) {
+
+    shellmatta_instance_t inst;
+    char buffer[20] = "abcdefghij\0\0\0\0\0\0\0\0\0";
+
+    inst.buffer = buffer;
+    inst.bufferSize = 20;
+    inst.cursor = 8;
+    inst.inputCount = 10;
+    inst.echoEnabled = true;
+    inst.mode = SHELLMATTA_MODE_OVERWRITE;
+
+    inst.write = writeFct;
+
+    write_callCnt = 0u;
+    memset(write_data, 0, sizeof(write_data));
+    write_idx = 0u;
+
+    utils_insertChars(&inst, (char*)"blksdflsd kfjlk", 4u);
+
+    CHECK( inst.cursor == 12);
+    CHECK( inst.inputCount == 14);
+    CHECK( write_callCnt == 1u );
+    CHECK( strncmp("blks", write_data, 5u) == 0);
+    REQUIRE( strncmp("abcdefghblks\0\0\0\0\0\0\0\0\0", buffer, sizeof(buffer)) == 0);
+}
+
+TEST_CASE( "shellmatta_insertChars append" ) {
+
+    shellmatta_instance_t inst;
+    char buffer[20] = "abcdefghij\0\0\0\0\0\0\0\0\0";
+
+    inst.buffer = buffer;
+    inst.bufferSize = 20;
+    inst.cursor = 10;
+    inst.inputCount = 10;
+    inst.echoEnabled = true;
+    inst.mode = SHELLMATTA_MODE_INSERT;
+
+    inst.write = writeFct;
+
+    write_callCnt = 0u;
+    memset(write_data, 0, sizeof(write_data));
+    write_idx = 0u;
+
+    utils_insertChars(&inst, (char*)"blksdflsd kfjlk", 4u);
+
+    CHECK( inst.cursor == 14);
+    CHECK( inst.inputCount == 14);
+    CHECK( write_callCnt == 1u );
+    CHECK( strncmp("blks", write_data, 5u) == 0);
+    REQUIRE( strncmp("abcdefghijblks\0\0\0\0\0\0\0", buffer, sizeof(buffer)) == 0);
+}
+
+TEST_CASE( "shellmatta_insertChars 0 length" ) {
+
+    shellmatta_instance_t inst;
+    char buffer[20] = "abcdefghij\0\0\0\0\0\0\0\0\0";
+
+    inst.buffer = buffer;
+    inst.bufferSize = 20;
+    inst.cursor = 8;
+    inst.inputCount = 10;
+    inst.echoEnabled = true;
+
+    inst.write = writeFct;
+
+    write_callCnt = 0u;
+    memset(write_data, 0, sizeof(write_data));
+    write_idx = 0u;
+
+    utils_insertChars(&inst, (char*)"blksdflsd kfjlk", 0u);
+
+    CHECK( inst.cursor == 8u );
+    CHECK( inst.inputCount == 10u );
+    CHECK( write_callCnt == 0u );
+    CHECK( memcmp("\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", write_data, sizeof(write_data) ) == 0u );
+    REQUIRE( memcmp("abcdefghij\0\0\0\0\0\0\0\0\0", buffer, sizeof(buffer)) == 0);
+}
diff --git a/test/unittest/shellmatta_utils/test_utils_restoreCursorPos.cpp b/test/unittest/shellmatta_utils/test_utils_restoreCursorPos.cpp
index e16f428..de32df5 100644
--- a/test/unittest/shellmatta_utils/test_utils_restoreCursorPos.cpp
+++ b/test/unittest/shellmatta_utils/test_utils_restoreCursorPos.cpp
@@ -19,7 +19,6 @@ TEST_CASE( "shellmatta_utils_restoreCursorPos" ) {
 
     shellmatta_instance_t inst;
     char buffer[20];
-    char dummyData[29];
 
     inst.buffer = buffer;
     inst.bufferSize = 20;
diff --git a/test/unittest/shellmatta_utils/test_utils_rewindCursor.cpp b/test/unittest/shellmatta_utils/test_utils_rewindCursor.cpp
index 2d46a2b..4629142 100644
--- a/test/unittest/shellmatta_utils/test_utils_rewindCursor.cpp
+++ b/test/unittest/shellmatta_utils/test_utils_rewindCursor.cpp
@@ -19,7 +19,6 @@ TEST_CASE( "shellmatta_utils_rewindCursor normal" ) {
 
     shellmatta_instance_t inst;
     char buffer[20];
-    char dummyData[29];
 
     inst.buffer = buffer;
     inst.bufferSize = 20;
@@ -45,7 +44,6 @@ TEST_CASE( "shellmatta_utils_rewindCursor rewind by 12 with cursor at 10" ) {
 
     shellmatta_instance_t inst;
     char buffer[20];
-    char dummyData[29];
 
     inst.buffer = buffer;
     inst.bufferSize = 20;
@@ -70,7 +68,6 @@ TEST_CASE( "shellmatta_utils_rewindCursor rewind by 0" ) {
 
     shellmatta_instance_t inst;
     char buffer[20];
-    char dummyData[29];
 
     inst.buffer = buffer;
     inst.bufferSize = 20;
diff --git a/test/unittest/shellmatta_utils/test_utils_saveCursorPos.cpp b/test/unittest/shellmatta_utils/test_utils_saveCursorPos.cpp
index 83d0f8d..214cd88 100644
--- a/test/unittest/shellmatta_utils/test_utils_saveCursorPos.cpp
+++ b/test/unittest/shellmatta_utils/test_utils_saveCursorPos.cpp
@@ -19,7 +19,6 @@ TEST_CASE( "shellmatta_utils_saveCursorPos" ) {
 
     shellmatta_instance_t inst;
     char buffer[20];
-    char dummyData[29];
 
     inst.buffer = buffer;
     inst.bufferSize = 20;
diff --git a/test/unittest/shellmatta_utils/test_utils_terminateInput.cpp b/test/unittest/shellmatta_utils/test_utils_terminateInput.cpp
new file mode 100644
index 0000000..04211cc
--- /dev/null
+++ b/test/unittest/shellmatta_utils/test_utils_terminateInput.cpp
@@ -0,0 +1,43 @@
+#include "test/framework/catch.hpp"
+#include "src/shellmatta_utils.c"
+#include <string.h>
+
+static uint32_t write_callCnt = 0u;
+static char write_data[10];
+static uint32_t write_idx;
+
+static shellmatta_retCode_t writeFct(const char* data, uint32_t length)
+{
+    write_callCnt ++;
+    strncpy(&write_data[write_idx], data, length);
+    write_idx += length;
+    return SHELLMATTA_OK;
+}
+
+
+TEST_CASE( "shellmatta_utils_terminateInput" ) {
+
+    shellmatta_instance_t inst;
+    char buffer[20];
+
+    inst.buffer = buffer;
+    inst.bufferSize = 20;
+    inst.cursor = 10;
+    inst.inputCount = 10;
+    inst.echoEnabled = true;
+    inst.prompt = "->";
+
+    inst.write = writeFct;
+
+    write_callCnt = 0u;
+    memset(write_data, 0, sizeof(write_data));
+    write_idx = 0u;
+
+    utils_terminateInput(&inst);
+
+    CHECK( inst.cursor      == 0u );
+    CHECK( inst.inputCount  == 0u );
+    CHECK( write_callCnt    == 2u );
+    CHECK( write_idx        == 4u );
+    REQUIRE( strncmp("\r\n->", write_data, 4u) == 0);
+}