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expect-expect.test.ts
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expect-expect.test.ts
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import {
AST_NODE_TYPES,
TSESLint,
} from '@typescript-eslint/experimental-utils';
import resolveFrom from 'resolve-from';
import rule from '../expect-expect';
const ruleTester = new TSESLint.RuleTester({
parser: resolveFrom(require.resolve('eslint'), 'espree'),
parserOptions: {
ecmaVersion: 2015,
},
});
ruleTester.run('expect-expect', rule, {
valid: [
'it("should pass", () => expect(true).toBeDefined())',
'test("should pass", () => expect(true).toBeDefined())',
'it("should pass", () => somePromise().then(() => expect(true).toBeDefined()))',
'it("should pass", myTest); function myTest() { expect(true).toBeDefined() }',
{
code:
'test("should pass", () => { expect(true).toBeDefined(); foo(true).toBe(true); })',
options: [{ assertFunctionNames: ['expect', 'foo'] }],
},
{
code: 'it("should return undefined",() => expectSaga(mySaga).returns());',
options: [{ assertFunctionNames: ['expectSaga'] }],
},
{
code: [
'test("verifies the function call", () => {',
' td.verify(someFunctionCall())',
'})',
].join('\n'),
options: [{ assertFunctionNames: ['td.verify'] }],
},
{
code: 'it("should pass", () => expect(true).toBeDefined())',
options: [{ assertFunctionNames: undefined }],
},
],
invalid: [
{
code: 'it("should fail", () => {});',
errors: [
{
messageId: 'noAssertions',
type: AST_NODE_TYPES.CallExpression,
},
],
},
{
code: 'it("should fail", myTest); function myTest() {}',
errors: [
{
messageId: 'noAssertions',
type: AST_NODE_TYPES.CallExpression,
},
],
},
{
code: 'test("should fail", () => {});',
errors: [
{
messageId: 'noAssertions',
type: AST_NODE_TYPES.CallExpression,
},
],
},
{
code: 'it("should fail", () => { somePromise.then(() => {}); });',
errors: [
{
messageId: 'noAssertions',
type: AST_NODE_TYPES.CallExpression,
},
],
},
{
code: 'test("should fail", () => { foo(true).toBe(true); })',
options: [{ assertFunctionNames: ['expect'] }],
errors: [
{
messageId: 'noAssertions',
type: AST_NODE_TYPES.CallExpression,
},
],
},
{
code: 'it("should also fail",() => expectSaga(mySaga).returns());',
options: [{ assertFunctionNames: ['expect'] }],
errors: [
{
messageId: 'noAssertions',
type: AST_NODE_TYPES.CallExpression,
},
],
},
],
});