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tried to improve the documentation of the function utils_removeChars + made it more defensive + fixed the testcases

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This commit is contained in:
prozessorkern 2020-06-02 18:40:24 +02:00
parent 2060cd61eb
commit f5f9c62493
2 changed files with 7 additions and 6 deletions
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5
src/shellmatta_utils.c
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@ -215,13 +215,14 @@ void utils_insertChars( shellmatta_instance_t *inst,
* position
* @param[in] inst pointer to a shellmatta instance
* @param[in] length number of characters to remove
* @param[in] backspace remove characters left of the cursor
* @param[in] backspace true ==> remove characters left of the cursor
* false ==> remove characters right of the cursor
*/
void utils_removeChars( shellmatta_instance_t *inst,
uint32_t length,
bool backspace)
{
if(0u != length)
if((0u != length) && (inst->inputCount >= inst->cursor))
{
/** -# rewind the cursor in case of backspace */
if(true == backspace)

8
test/unittest/shellmatta_utils/test_utils_removeChars.cpp
View File

@ -141,8 +141,8 @@ TEST_CASE("shellmatta_utils_removeChars_remove_chars_in_the_middle_of_the_buffer
utils_removeChars(&inst, length, backspace);
CHECK( inst.cursor == 10u);
CHECK( inst.inputCount == 20u);
REQUIRE(strncmp("abcdefghijklmnopqr", buffer, sizeof(buffer)) == 0);
CHECK( inst.inputCount == 15u);
REQUIRE(strncmp("abcdefghijpqr", buffer, sizeof(buffer)) == 0);
}
TEST_CASE("shellmatta_utils_removeChars_remove_more_chars_in_middle_of_buffer_than_are_present_backspace_false"){
@ -168,8 +168,8 @@ TEST_CASE("shellmatta_utils_removeChars_remove_more_chars_in_middle_of_buffer_th
utils_removeChars(&inst, length, backspace);
CHECK( inst.cursor == 10u);
CHECK( inst.inputCount == 20u);
REQUIRE(strncmp("abcdefghijklmnopqr", buffer, sizeof(buffer)) == 0);
CHECK( inst.inputCount == 10u);
REQUIRE(strncmp("abcdefghij", buffer, 10u) == 0);
}
TEST_CASE("shellmatta_utils_removeChars_curser_outside_buffer"){