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author | Amir Bandeali <abandeali1@gmail.com> | 2018-05-16 03:52:49 +0800 |
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committer | Amir Bandeali <abandeali1@gmail.com> | 2018-05-16 03:52:49 +0800 |
commit | 9e0471bfbb4bb2b3b490e10ce34b16c88e8bab9a (patch) | |
tree | f72aae5170b6f1f6d3d70ebf6c03ed171680ff50 /packages/dev-utils/src/callback_error_reporter.ts | |
parent | 9744b1906a111aa0c65c8fafb4db66aef32a5a23 (diff) | |
parent | 6aed4fb1ae27dabed027c855f2cbdc0bfb4f3b6b (diff) | |
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Merge branch 'development' into v2-prototype
Diffstat (limited to 'packages/dev-utils/src/callback_error_reporter.ts')
-rw-r--r-- | packages/dev-utils/src/callback_error_reporter.ts | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/packages/dev-utils/src/callback_error_reporter.ts b/packages/dev-utils/src/callback_error_reporter.ts new file mode 100644 index 000000000..c8e693673 --- /dev/null +++ b/packages/dev-utils/src/callback_error_reporter.ts @@ -0,0 +1,68 @@ +import * as chai from 'chai'; +import * as _ from 'lodash'; + +import { DoneCallback } from '@0xproject/types'; + +const expect = chai.expect; + +export const callbackErrorReporter = { + reportNoErrorCallbackErrors(done: DoneCallback, expectToBeCalledOnce = true) { + const callback = <T>(f?: (value: T) => void) => { + const wrapped = (value: T) => { + if (_.isUndefined(f)) { + done(); + return; + } + try { + f(value); + if (expectToBeCalledOnce) { + done(); + } + } catch (err) { + done(err); + } + }; + return wrapped; + }; + return callback; + }, + reportNodeCallbackErrors(done: DoneCallback, expectToBeCalledOnce = true) { + const callback = <T>(f?: (value: T) => void) => { + const wrapped = (error: Error | null, value: T | undefined) => { + if (!_.isNull(error)) { + done(error); + } else { + if (_.isUndefined(f)) { + done(); + return; + } + try { + f(value as T); + if (expectToBeCalledOnce) { + done(); + } + } catch (err) { + done(err); + } + } + }; + return wrapped; + }; + return callback; + }, + assertNodeCallbackError(done: DoneCallback, errMsg: string) { + const wrapped = <T>(error: Error | null, value: T | undefined) => { + if (_.isNull(error)) { + done(new Error('Expected callback to receive an error')); + } else { + try { + expect(error.message).to.be.equal(errMsg); + done(); + } catch (err) { + done(err); + } + } + }; + return wrapped; + }, +}; |