146 lines
3.5 KiB
JavaScript
146 lines
3.5 KiB
JavaScript
/*eslint-env mocha*/
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"use strict";
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var eslint = require("eslint");
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function verifyAndAssertMessages(code, rules, expectedMessages) {
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var messages = eslint.linter.verify(
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code,
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{
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parser: require.resolve(".."),
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rules: rules,
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env: {
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node: true
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}
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}
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);
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if (messages.length !== expectedMessages.length) {
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throw new Error("Expected " + expectedMessages.length + " message(s), got " + messages.length);
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}
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messages.forEach(function (message, i) {
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var formatedMessage = message.line + ":" + message.column + " " + message.message + (message.ruleId ? " " + message.ruleId : "");
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if (formatedMessage !== expectedMessages[i]) {
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throw new Error("Message " + i + " does not match:\nExpected: " + expectedMessages[i] + "\nActual: " + formatedMessage);
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}
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});
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}
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describe("verify", function () {
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it("arrow function support (issue #1)", function () {
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verifyAndAssertMessages(
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"describe('stuff', () => {});",
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{},
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[]
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);
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});
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it("EOL validation (issue #2)", function () {
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verifyAndAssertMessages(
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"module.exports = \"something\";",
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{ "eol-last": 1, "semi": 1 },
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[ "1:1 Newline required at end of file but not found. eol-last" ]
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);
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});
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it("Readable error messages (issue #3)", function () {
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verifyAndAssertMessages(
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"{ , res }",
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{},
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[ "1:2 Unexpected token" ]
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);
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});
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it("Unused vars in JSX (issue #5)", function () {
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verifyAndAssertMessages(
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"var App = require('./App');\n" +
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"module.exports = <App />;",
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{ "no-unused-vars": 1 },
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[]
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);
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});
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it("Modules support (issue #5)", function () {
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verifyAndAssertMessages(
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"import Foo from 'foo';\n" +
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"export default Foo;",
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{ },
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[]
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);
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});
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it("Rest parameters (issue #7)", function () {
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verifyAndAssertMessages(
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"function foo(...args) { return args; }",
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{ "no-undef": 1 },
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[]
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);
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});
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it("Exported classes should be used (issue #8)", function () {
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verifyAndAssertMessages(
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"class Foo {} module.exports = Foo;",
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{ "no-unused-vars": 1 },
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[]
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);
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});
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it("super keyword in class (issue #10)", function () {
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verifyAndAssertMessages(
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"class Foo { constructor() { super() } }",
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{ "no-undef": 1 },
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[]
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);
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});
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it("Rest parameter in destructuring assignment (issue #11)", function () {
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verifyAndAssertMessages(
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"const [a, ...rest] = ['1', '2', '3']; module.exports = rest;",
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{ "no-undef": 1 },
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[]
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);
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});
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it("JSX attribute names marked as variables (issue #12)", function () {
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verifyAndAssertMessages(
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"module.exports = <div className=\"foo\" />",
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{ "no-undef": 1 },
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[]
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);
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});
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it("Variables in JSX should be used (issues #15, #17, #21, #29)", function () {
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verifyAndAssertMessages(
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"import App from './App'; export default (<App />);",
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{ "no-unused-vars": 1, "no-undef": 1 },
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[]
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);
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});
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it("Multiple destructured assignment with compound properties (issue #16)", function () {
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verifyAndAssertMessages(
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"module.exports = { ...a.a, ...a.b };",
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{ "no-dupe-keys": 1 },
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[]
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);
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});
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it("Arrow function with non-block bodies (issue #20)", function () {
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verifyAndAssertMessages(
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"\"use strict\"; () => 1",
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{ "strict": 1 },
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[]
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);
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});
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it("await keyword (issue #22)", function () {
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verifyAndAssertMessages(
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"async function foo() { await bar(); }",
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{ "no-unused-expressions": 1 },
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[]
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);
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});
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});
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