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authorFabio Berger <me@fabioberger.com>2017-05-26 23:12:22 +0800
committerFabio Berger <me@fabioberger.com>2017-05-26 23:12:22 +0800
commit555bac19cb90a83d5a0025e53341f76ff39c4373 (patch)
tree45db0a8151ef22ad69d9d42b8fc10807d1b613ac /test/utils/rpc.ts
parentf4bf9fc423c4bb7f2027cdd5700de56f8f4bff96 (diff)
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Setup blockchain snapshotting before/after every test, implemented unit tests for exchangeWrapper.isValidSignature
Diffstat (limited to 'test/utils/rpc.ts')
-rw-r--r--test/utils/rpc.ts48
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..b689a938c
--- /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[] = []) {
+ const payload = JSON.stringify({
+ id: this.id,
+ method,
+ params,
+ });
+ this.id += 1;
+ return payload;
+ }
+ private async sendAsync(payload: string) {
+ 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;
+ }
+}