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Add an example that reuses a step definition

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Eugen Wissner 2018-12-27 08:47:18 +01:00
parent 0e8f395f7a
commit fe4f62ff1a
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@ -47,3 +47,11 @@ Shows how to use promises and `async`/`await` when testing asynchronous code.
### ts ### ts
Defining steps in TypeScript. Defining steps in TypeScript.
### type-parser
Defines custom parameter types.
### reuse
Suggests a way to reuse step definitions.

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reuse/babel.config.js Normal file
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module.exports = {
presets: [
[ '@babel/env', {
useBuiltIns: 'usage'
}]
]
}

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Feature:
Scenario:
Given a person with name
And a person named Jack
Then the same function is called for two distinct step definitions

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import { Before, Given, Then } from 'cucumber'
import { expect } from 'chai'
Before(function () {
this.names = []
})
function step (name) {
this.names.push(name)
}
function decorator (f, ...args) {
if (args.length > 0) {
return function () {
f.call(this, args[0])
}
} else {
return f
}
}
Given('a person with name', decorator(step, 'John'))
Given('a person named {word}', decorator(step))
Then('the same function is called for two distinct step definitions', function () {
expect(this.names).to.have.lengthOf(2)
expect(this.names).to.include.members(['John', 'Jack'])
})

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reuse/package-lock.json generated Normal file

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reuse/package.json Normal file
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{
"name": "reuse",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "cucumber-js --require-module '@babel/register'"
},
"author": "Eugen Wissner <belka@caraus.de>",
"license": "MPL-2.0",
"devDependencies": {
"@babel/core": "^7.2.2",
"@babel/preset-env": "^7.2.3",
"@babel/register": "^7.0.0",
"babel-loader": "^8.0.4",
"chai": "^4.2.0",
"cucumber": "^5.0.3"
}
}