Update test framework: fix run_tests.py to support all test files, add auto-import-check for test files

node_modules/ajv/lib/runtime/equal.ts

@@ -0,0 +1,7 @@
+// https://github.com/ajv-validator/ajv/issues/889
+import * as equal from "fast-deep-equal"
+
+type Equal = typeof equal & {code: string}
+;(equal as Equal).code = 'require("ajv/dist/runtime/equal").default'
+
+export default equal as Equal