added Unit Tests

Startcode/imageInputTests.c

@@ -49,6 +49,23 @@ void test_readImagesReturnsCorrectNumberOfImages(void)
     remove(path);
 }
 
+void test_mytest_clear_function_NULL(void)
+{
+    clearSeries(NULL); //check if function works with NULL-pointer
+}
+
+void test_mytest_clear_function_series_without_images_or_labels(void)
+{
+    GrayScaleImageSeries *series = malloc(sizeof(GrayScaleImageSeries));
+
+    TEST_ASSERT_NOT_NULL(series);
+    series->images = NULL;
+    series->labels = NULL;
+    series->count = 0;
+
+    clearSeries(series);
+}
+
 void test_readImagesReturnsCorrectImageWidth(void)
 {
     GrayScaleImageSeries *series = NULL;
@@ -139,5 +156,8 @@ int main()
     RUN_TEST(test_readImagesReturnsNullOnNotExistingPath);
     RUN_TEST(test_readImagesFailsOnWrongFileTag);
 
+    RUN_TEST(test_mytest_clear_function_NULL);
+    RUN_TEST(test_mytest_clear_function_series_without_images_or_labels);
+
     return UNITY_END();
 }