In the test-api-string.c there was an error if the unittests are built in release.
Full error message:
```
tests/unit-core/test-api-strings.c:89:20: error: variable-length array bound is unknown [-Werror=vla-larger-than=]
89 | JERRY_VLA (char, string_from_cesu8_string, cesu8_sz);
```
The problem is that the compiler does not know if the buffer size is always greater than zero.
Added an extra check to the TEST_ASSERT a line above to resolve the error.
JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.u-szeged@partner.samsung.com
MSVC doesn't support C99 VLA (variable-length array).
Use fixed size arrays in API examples and use JERRY_VLA macro
in unit tests to make these tests buildable on Windows too.
JerryScript-DCO-1.0-Signed-off-by: Csaba Osztrogonác oszi@inf.u-szeged.hu
`test-api.c` is contains testing for all API functions. This file is too big and hard to read. This patch moves the strings and string methods into a separate test file.
JerryScript-DCO-1.0-Signed-off-by: Bela Toth tbela@inf.u-szeged.hu
