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author | Fabio Berger <me@fabioberger.com> | 2017-05-29 15:09:54 +0800 |
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committer | Fabio Berger <me@fabioberger.com> | 2017-05-29 15:09:54 +0800 |
commit | 62cc3b919c73b7726793808e3b9631dba41cef28 (patch) | |
tree | 22c5f1728c56b09fa0e15e5e645c1f891224a6ee /test/utils/rpc.ts | |
parent | 281b9eaa5d207d32ae38fbab25cbca83fe81efa1 (diff) | |
parent | b897bdab79fe566ffc8c19c6ec9f1bb7260fa95e (diff) | |
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Merge branch 'master' of github.com:0xProject/0x.js
# Conflicts:
# src/ts/0x.js.ts
# src/ts/utils/utils.ts
Diffstat (limited to 'test/utils/rpc.ts')
-rw-r--r-- | test/utils/rpc.ts | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/test/utils/rpc.ts b/test/utils/rpc.ts new file mode 100644 index 000000000..e331fa6d4 --- /dev/null +++ b/test/utils/rpc.ts @@ -0,0 +1,48 @@ +import * as ethUtil from 'ethereumjs-util'; +import * as request from 'request-promise-native'; +import {constants} from './constants'; + +export class RPC { + private host: string; + private port: number; + private id: number; + constructor() { + this.host = constants.RPC_HOST; + this.port = constants.RPC_PORT; + this.id = 0; + } + public async takeSnapshotAsync(): Promise<number> { + const method = 'evm_snapshot'; + const params: any[] = []; + const payload = this.toPayload(method, params); + const snapshotIdHex = await this.sendAsync(payload); + const snapshotId = ethUtil.bufferToInt(ethUtil.toBuffer(snapshotIdHex)); + return snapshotId; + } + public async revertSnapshotAsync(snapshotId: number): Promise<boolean> { + const method = 'evm_revert'; + const params = [snapshotId]; + const payload = this.toPayload(method, params); + const didRevert = await this.sendAsync(payload); + return didRevert; + } + private toPayload(method: string, params: any[] = []): string { + const payload = JSON.stringify({ + id: this.id, + method, + params, + }); + this.id += 1; + return payload; + } + private async sendAsync(payload: string): Promise<any> { + const opts = { + method: 'POST', + uri: `http://${this.host}:${this.port}`, + body: payload, + }; + const bodyString = await request(opts); + const body = JSON.parse(bodyString); + return body.result; + } +} |