Cleanup unit tests that export files by making sure those files are deleted once the unit test is complete. Moved logging from a .txt to a .log file so that git ignores the files (#5852)

Signed-off-by: AMZN-Gene <genewalt@amazon.com>
Co-authored-by: Kim Kulling <kimkulling@users.noreply.github.com>

test/unit/ImportExport/utAssjsonImportExport.cpp

@@ -57,18 +57,29 @@ public:
         const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/OBJ/spider.obj", aiProcess_ValidateDataStructure);
 
         Exporter exporter;
-        aiReturn res = exporter.Export(scene, "assjson", "./spider_test.json");
+        const char *testFileName = "./spider_test.json";
+        aiReturn res = exporter.Export(scene, "assjson", testFileName);
         if (aiReturn_SUCCESS != res) {
             return false;
         }
 
         Assimp::ExportProperties exportProperties;
         exportProperties.SetPropertyBool("JSON_SKIP_WHITESPACES", true);
-        aiReturn resNoWhitespace = exporter.Export(scene, "assjson", "./spider_test_nowhitespace.json", 0u, &exportProperties);
+        const char *testNoWhitespaceFileName = "./spider_test_nowhitespace.json";
+        aiReturn resNoWhitespace = exporter.Export(scene, "assjson", testNoWhitespaceFileName, 0u, &exportProperties);
         if (aiReturn_SUCCESS != resNoWhitespace) {
             return false;
         }
 
+        // Cleanup, remove generated json
+        if (0 != std::remove(testFileName)) {
+            return false;
+        }
+
+        if (0 != std::remove(testNoWhitespaceFileName)) {
+            return false;
+        }
+
         return true;
     }
 };