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

node_modules/@grpc/grpc-js/build/src/load-balancer-weighted-round-robin.d.ts

@@ -0,0 +1,20 @@
+import { TypedLoadBalancingConfig } from './load-balancer';
+export declare class WeightedRoundRobinLoadBalancingConfig implements TypedLoadBalancingConfig {
+    private readonly enableOobLoadReport;
+    private readonly oobLoadReportingPeriodMs;
+    private readonly blackoutPeriodMs;
+    private readonly weightExpirationPeriodMs;
+    private readonly weightUpdatePeriodMs;
+    private readonly errorUtilizationPenalty;
+    constructor(enableOobLoadReport: boolean | null, oobLoadReportingPeriodMs: number | null, blackoutPeriodMs: number | null, weightExpirationPeriodMs: number | null, weightUpdatePeriodMs: number | null, errorUtilizationPenalty: number | null);
+    getLoadBalancerName(): string;
+    toJsonObject(): object;
+    static createFromJson(obj: any): WeightedRoundRobinLoadBalancingConfig;
+    getEnableOobLoadReport(): boolean;
+    getOobLoadReportingPeriodMs(): number;
+    getBlackoutPeriodMs(): number;
+    getWeightExpirationPeriodMs(): number;
+    getWeightUpdatePeriodMs(): number;
+    getErrorUtilizationPenalty(): number;
+}
+export declare function setup(): void;