Kristaps Fabians Geikins
48 lines
1.3 KiB
TypeScript
48 lines
1.3 KiB
TypeScript
import { Optional } from '@/modules/shared/helpers/typeHelper'
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import { GraphQLResponse } from 'apollo-server-core'
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type ChaiPluginThis<O = Record<string, unknown>> = {
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__flags: {
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message: Optional<string>
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negate: Optional<boolean>
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object: O
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}
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}
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/**
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* Adds various useful assertions for GraphQL API integration tests
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*/
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const graphqlChaiPlugin: Chai.ChaiPlugin = (_chai, utils) => {
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const { Assertion } = _chai
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utils.addMethod(
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Assertion.prototype,
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'haveGraphQLErrors',
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function (this: ChaiPluginThis<GraphQLResponse>, matchMessage?: string) {
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const { negate, object } = this.__flags
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const { errors } = object
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const errorsArr = errors || []
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if (negate) {
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new Assertion(errorsArr).to.have.lengthOf(0)
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} else {
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new Assertion(errorsArr).to.have.lengthOf.greaterThanOrEqual(1)
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}
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if (matchMessage) {
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if (negate) {
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new Assertion(
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errorsArr.map((e) => e.message.toLowerCase()).join('\n')
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).to.not.contain(matchMessage.toLowerCase())
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} else {
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new Assertion(
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errorsArr.map((e) => e.message.toLowerCase()).join('\n')
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).to.contain(matchMessage.toLowerCase())
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}
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}
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}
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)
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}
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export default graphqlChaiPlugin
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