39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/ */
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"use strict";
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// ------------------------------------------------------------------------------
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// Requirements
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// ------------------------------------------------------------------------------
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var rule = require("../lib/rules/use-includes-instead-of-indexOf");
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var RuleTester = require("eslint/lib/testers/rule-tester");
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const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } });
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// ------------------------------------------------------------------------------
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// Tests
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// ------------------------------------------------------------------------------
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function invalidCode(code) {
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let message = "use .includes instead of .indexOf";
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return {code, errors: [{message, type: "BinaryExpression"}]};
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}
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ruleTester.run("use-includes-instead-of-indexOf", rule, {
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valid: [
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"let a = foo.includes(bar);",
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"let a = foo.indexOf(bar) > 0;",
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"let a = foo.indexOf(bar) != 0;"
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],
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invalid: [
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invalidCode("let a = foo.indexOf(bar) >= 0;"),
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invalidCode("let a = foo.indexOf(bar) != -1;"),
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invalidCode("let a = foo.indexOf(bar) !== -1;"),
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invalidCode("let a = foo.indexOf(bar) == -1;"),
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invalidCode("let a = foo.indexOf(bar) === -1;"),
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invalidCode("let a = foo.indexOf(bar) < 0;")
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]
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});
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