mock provider basic implementation

src/_tests/unit/mockProvider.ts

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+/* eslint-disable @typescript-eslint/no-unused-vars */
+import {
+    Provider,
+    Network,
+    TransactionResponse,
+    Block,
+    BlockTag,
+    ProviderEvent,
+    TransactionReceipt,
+    Log,
+    FeeData,
+} from '../../providers/index.js';
+import { AddressLike } from '../../address/index.js';
+import { Shard, Zone } from '../../constants/index.js';
+import { Listener, EventPayload, EventEmitterable, getBytes } from '../../utils/index.js';
+import { Outpoint, OutpointDeltas } from '../../transaction/utxo.js';
+import { AccessList, QiTransaction, QuaiTransaction } from '../../transaction/index.js';
+import { WorkObjectLike } from '../../transaction/work-object.js';
+import { QiPerformActionTransaction } from '../../providers/abstract-provider.js';
+import { txpoolContentResponse, txpoolInspectResponse } from '../../providers/txpool.js';
+import { QiTransactionResponse } from '../../providers/provider.js';
+import { decodeProtoTransaction } from '../../encoding/index.js';
+import { QiTransactionResponseParams } from '../../providers/formatting.js';
+
+export class MockProvider implements Provider {
+    private _network: Network = Network.from(BigInt(1));
+    private _blockNumber: number = 1000;
+    private _transactions: Map<string, TransactionResponse> = new Map();
+    private _blocks: Map<string, Block> = new Map();
+    private _balances: Map<string, bigint> = new Map();
+    private _eventHandlers: Map<
+        string,
+        Array<{
+            listener: Listener;
+            once: boolean;
+            zone?: Zone;
+        }>
+    > = new Map();
+
+    // Required by Provider interface but not used in QiHDWallet tests
+    provider = this;
+
+    constructor(config?: { network?: bigint; blockNumber?: number }) {
+        if (config?.network) this._network = Network.from(config.network);
+        if (config?.blockNumber) this._blockNumber = config.blockNumber;
+    }
+
+    // Helper methods to set up test state
+    public setBalance(address: string, balance: bigint): void {
+        this._balances.set(address.toLowerCase(), balance);
+    }
+
+    public setTransaction(hash: string, tx: TransactionResponse): void {
+        this._transactions.set(hash.toLowerCase(), tx);
+    }
+
+    // Implementation of Provider interface methods
+    async getNetwork(): Promise<Network> {
+        return this._network;
+    }
+
+    async getBlockNumber(shard: Shard): Promise<number> {
+        return this._blockNumber;
+    }
+
+    async getBalance(address: AddressLike, blockTag?: BlockTag): Promise<bigint> {
+        return this._balances.get(address.toString().toLowerCase()) ?? BigInt(0);
+    }
+
+    async broadcastTransaction(zone: Zone, signedTx: string, from?: AddressLike): Promise<TransactionResponse> {
+        // Simulate transaction broadcast
+        const type = decodeProtoTransaction(getBytes(signedTx)).type;
+
+        const tx = type == 2 ? QiTransaction.from(signedTx) : QuaiTransaction.from(signedTx);
+        const txObj = tx.toJSON();
+
+        if (type == 2) {
+            return new QiTransactionResponse(txObj as QiTransactionResponseParams, this);
+        }
+
+        // TODO: Implement _wrapTransactionResponse for QuaiTransactionResponse
+        throw new Error('Broadcast transaction not implemented for Quai');
+    }
+
+    async getOutpointDeltas(): Promise<OutpointDeltas> {
+        // TODO: Implement
+        throw new Error('Method not implemented.');
+    }
+
+    async getOutpointsByAddress(): Promise<Array<Outpoint>> {
+        // TODO: Implement
+        throw new Error('Method not implemented.');
+    }
+
+    async getBlock(shard: Shard, blockHashOrBlockTag: BlockTag | string, prefetchTxs?: boolean): Promise<null | Block> {
+        if (typeof blockHashOrBlockTag === 'string') {
+            return this._blocks.get(blockHashOrBlockTag) ?? null;
+        }
+        // Handle block tag (latest, pending, etc.)
+        throw new Error('Method not implemented.');
+    }
+
+    async estimateFeeForQi(tx: QiPerformActionTransaction): Promise<bigint> {
+        // Return a mock fee for testing
+        return BigInt(1000);
+    }
+
+    async on(event: ProviderEvent, listener: Listener, zone?: Zone): Promise<this> {
+        const eventKey = this._getEventKey(event, zone);
+        if (!this._eventHandlers.has(eventKey)) {
+            this._eventHandlers.set(eventKey, []);
+        }
+        this._eventHandlers.get(eventKey)!.push({ listener, once: false, zone });
+        return this;
+    }
+
+    async once(event: ProviderEvent, listener: Listener, zone?: Zone): Promise<this> {
+        const eventKey = this._getEventKey(event, zone);
+        if (!this._eventHandlers.has(eventKey)) {
+            this._eventHandlers.set(eventKey, []);
+        }
+        this._eventHandlers.get(eventKey)!.push({ listener, once: true, zone });
+        return this;
+    }
+
+    async emit(event: ProviderEvent, zone?: Zone, ...args: Array<any>): Promise<boolean> {
+        const eventKey = this._getEventKey(event, zone);
+        const handlers = this._eventHandlers.get(eventKey);
+        if (!handlers || handlers.length === 0) {
+            return false;
+        }
+
+        const payload = new EventPayload<ProviderEvent>(this as EventEmitterable<ProviderEvent>, null, event);
+
+        const remainingHandlers = handlers.filter(({ listener, once }) => {
+            try {
+                listener.call(this, ...args, payload);
+                return !once;
+            } catch (error) {
+                console.error('Error in event handler:', error);
+                return true;
+            }
+        });
+
+        this._eventHandlers.set(eventKey, remainingHandlers);
+        return true;
+    }
+
+    async listenerCount(event?: ProviderEvent): Promise<number> {
+        if (!event) {
+            // Sum up all listeners across all events
+            return Array.from(this._eventHandlers.values()).reduce((sum, handlers) => sum + handlers.length, 0);
+        }
+        const handlers = this._eventHandlers.get(this._getEventKey(event));
+        return handlers?.length ?? 0;
+    }
+
+    async listeners(event?: ProviderEvent): Promise<Array<Listener>> {
+        if (!event) {
+            // Get all listeners across all events
+            return Array.from(this._eventHandlers.values())
+                .flat()
+                .map(({ listener }) => listener);
+        }
+        const handlers = this._eventHandlers.get(this._getEventKey(event));
+        return handlers?.map(({ listener }) => listener) ?? [];
+    }
+
+    async off(event: ProviderEvent, listener?: Listener, zone?: Zone): Promise<this> {
+        const eventKey = this._getEventKey(event, zone);
+        if (!listener) {
+            // Remove all listeners for this event
+            this._eventHandlers.delete(eventKey);
+        } else {
+            const handlers = this._eventHandlers.get(eventKey);
+            if (handlers) {
+                const remainingHandlers = handlers.filter((h) => h.listener !== listener);
+                this._eventHandlers.set(eventKey, remainingHandlers);
+            }
+        }
+        return this;
+    }
+
+    async removeAllListeners(event?: ProviderEvent): Promise<this> {
+        if (!event) {
+            this._eventHandlers.clear();
+        } else {
+            this._eventHandlers.delete(this._getEventKey(event));
+        }
+        return this;
+    }
+
+    async addListener(event: ProviderEvent, listener: Listener, zone?: Zone): Promise<this> {
+        return this.on(event, listener, zone);
+    }
+
+    async removeListener(event: ProviderEvent, listener: Listener, zone?: Zone): Promise<this> {
+        return this.off(event, listener, zone);
+    }
+
+    // Helper method to create consistent event keys
+    private _getEventKey(event: ProviderEvent, zone?: Zone): string {
+        if (typeof event === 'string') {
+            return zone ? `${event}:${zone}` : event;
+        }
+
+        if ('orphan' in event) {
+            return zone ? `orphan:${zone}` : 'orphan';
+        }
+        if ('transaction' in event) {
+            return zone ? `transaction:${event.transaction}:${zone}` : `transaction:${event.transaction}`;
+        }
+        if ('qiTransaction' in event) {
+            return zone ? `qiTransaction:${event.qiTransaction}:${zone}` : `qiTransaction:${event.qiTransaction}`;
+        }
+        if ('filter' in event) {
+            return zone ? `filter:${JSON.stringify(event.filter)}:${zone}` : `filter:${JSON.stringify(event.filter)}`;
+        }
+
+        return JSON.stringify(event);
+    }
+
+    // Stub implementations for other required methods
+    destroy(): void {
+        // No-op for mock
+    }
+
+    async getFeeData(_zone: Zone, _txType: boolean): Promise<FeeData> {
+        throw new Error('Method not implemented.');
+    }
+
+    async getPendingHeader(): Promise<WorkObjectLike> {
+        throw new Error('Method not implemented.');
+    }
+
+    async getLockedBalance(): Promise<bigint> {
+        throw new Error('Method not implemented.');
+    }
+    async getTransactionCount(): Promise<number> {
+        throw new Error('Method not implemented.');
+    }
+    async getCode(): Promise<string> {
+        throw new Error('Method not implemented.');
+    }
+    async getStorage(): Promise<string> {
+        throw new Error('Method not implemented.');
+    }
+    async estimateGas(): Promise<bigint> {
+        throw new Error('Method not implemented.');
+    }
+    async createAccessList(): Promise<AccessList> {
+        throw new Error('Method not implemented.');
+    }
+    async call(): Promise<string> {
+        throw new Error('Method not implemented.');
+    }
+    async getTransaction(): Promise<null | TransactionResponse> {
+        throw new Error('Method not implemented.');
+    }
+    async getTransactionReceipt(): Promise<null | TransactionReceipt> {
+        throw new Error('Method not implemented.');
+    }
+    async getTransactionResult(): Promise<null | string> {
+        throw new Error('Method not implemented.');
+    }
+    async getLogs(): Promise<Array<Log>> {
+        throw new Error('Method not implemented.');
+    }
+    async waitForTransaction(): Promise<null | TransactionReceipt> {
+        throw new Error('Method not implemented.');
+    }
+    async waitForBlock(): Promise<Block> {
+        throw new Error('Method not implemented.');
+    }
+    async getProtocolExpansionNumber(): Promise<number> {
+        throw new Error('Method not implemented.');
+    }
+    async getTxPoolContent(zone: Zone): Promise<txpoolContentResponse> {
+        throw new Error('Method not implemented.');
+    }
+    async txPoolInspect(zone: Zone): Promise<txpoolInspectResponse> {
+        throw new Error('Method not implemented.');
+    }
+    async getQiRateAtBlock(): Promise<bigint> {
+        throw new Error('Method not implemented.');
+    }
+    async getLatestQiRate(): Promise<bigint> {
+        throw new Error('Method not implemented.');
+    }
+    async getQuaiRateAtBlock(): Promise<bigint> {
+        throw new Error('Method not implemented.');
+    }
+    async getLatestQuaiRate(): Promise<bigint> {
+        throw new Error('Method not implemented.');
+    }
+}