From 536643a462ea99e27bb4110b9470e22f06736377 Mon Sep 17 00:00:00 2001
From: "S.Hentges" <sebastian.hentges@web.de>
Date: Sun, 17 May 2020 20:09:58 +0200
Subject: [PATCH] Add Unittest for test_utils_removeChars.cpp

---
 makefile                                      |   3 +-
 .../test_utils_removeChars.cpp                | 119 ++++++++++++++++++
 2 files changed, 121 insertions(+), 1 deletion(-)
 create mode 100644 test/unittest/shellmatta_utils/test_utils_removeChars.cpp

diff --git a/makefile b/makefile
index c4a43eb..00d3aed 100644
--- a/makefile
+++ b/makefile
@@ -32,7 +32,8 @@ UNITTEST_SOURCES := test/unittest/test_main.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_utils/test_utils_terminateInput.cpp  		\
+					test/unittest/shellmatta_utils/test_utils_removeChars.cpp      		\
                     test/unittest/shellmatta_autocomplete/test_autocomplete_run.cpp     \
                     test/unittest/shellmatta_escape/test_escape_processArrowKeys.cpp    \
                     test/unittest/shellmatta_history/test_appendHistoryByte.cpp         \
diff --git a/test/unittest/shellmatta_utils/test_utils_removeChars.cpp b/test/unittest/shellmatta_utils/test_utils_removeChars.cpp
new file mode 100644
index 0000000..4eb9b15
--- /dev/null
+++ b/test/unittest/shellmatta_utils/test_utils_removeChars.cpp
@@ -0,0 +1,119 @@
+#include "test/framework/catch.hpp"
+#include "src/shellmatta_utils.h"
+#include <string.h>
+
+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_utils_removeChars_nothing_removed"){
+    shellmatta_instance_t inst;
+    memset(&inst, 0, sizeof(inst));
+    uint32_t length = 0u;
+    bool backspace = true;
+
+    inst.write = writeFct;
+    write_callCnt = 0u;
+    memset(write_data, 0, sizeof(write_data));
+    write_idx = 0u;
+
+    inst.cursor = 20u;
+    inst.inputCount = 20u;
+
+    char buffer[20] = "abcdefghijklmnopqr\0";
+    inst.buffer = buffer;
+    inst.bufferSize = 20u;
+
+    utils_removeChars( &inst, length, backspace);
+    
+    CHECK( inst.cursor == 20u);
+    CHECK( inst.inputCount == 20);
+    REQUIRE(strncmp("abcdefghijklmnopqr\0", buffer, sizeof(buffer)) == 0);
+}
+
+TEST_CASE("shellmatta_utils_removeChars_backspace_false"){
+    shellmatta_instance_t inst;
+    char buffer[20] = "abcdefghijklmnopqr\0";
+    memset(&inst, 0, sizeof(inst));
+    uint32_t length = 5u;
+    bool backspace = false;
+
+    inst.write = writeFct;
+    write_callCnt = 0u;
+    memset(write_data, 0, sizeof(write_data));
+    write_idx = 0u;
+
+    inst.cursor = 20;
+    inst.inputCount = 20u;
+
+    inst.buffer = buffer;
+    inst.bufferSize = 20u;
+
+    utils_removeChars(&inst, length, backspace);
+
+    CHECK( inst.cursor == 20u);
+    CHECK( inst.inputCount == 20);
+    REQUIRE(strncmp("abcdefghijklmnopqr\0", buffer, sizeof(buffer)) == 0);
+}
+
+TEST_CASE("shellmatta_utils_removeChars_remove_five"){
+    shellmatta_instance_t inst;
+    char buffer[20] = "abcdefghijklmnopqr\0";
+
+    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 = true;
+
+    inst.cursor = 10u;
+    inst.inputCount = 20u;
+
+    inst.bufferSize = 20u;
+    inst.buffer = buffer;
+
+    utils_removeChars(&inst, length, backspace);
+
+    CHECK( inst.cursor == 5u);
+    CHECK( inst.inputCount == 15u);
+    REQUIRE(strncmp("abcdeklmnopqr\0", buffer, sizeof(buffer)) == 0);
+}
+
+TEST_CASE("shellmatta_utils_removeChars_length_greater_than_CursorPos"){
+    shellmatta_instance_t inst;
+    char buffer[20] = "abcdefghijklmnopqr\0";
+
+    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 = true;
+
+    inst.cursor = 10u;
+    inst.inputCount = 20u;
+
+    inst.bufferSize = 20u;
+    inst.buffer = buffer;
+
+    utils_removeChars(&inst, length, backspace);
+
+    CHECK( inst.cursor == 0u);
+    CHECK( inst.inputCount == 10u);
+    REQUIRE(strncmp("klmnopqr\0", buffer, sizeof(buffer)) == 0);
+}
\ No newline at end of file