eslint/tests/lib/rules/no-self-compare.js

   1 /**
   2  * @fileoverview Tests for no-self-compare rule.
   3  * @author Ilya Volodin
   4  */
   5
   6 "use strict";
   7
   8 //------------------------------------------------------------------------------
   9 // Requirements
  10 //------------------------------------------------------------------------------
  11
  12 const rule = require("../../../lib/rules/no-self-compare"),
  13     { RuleTester } = require("../../../lib/rule-tester");
  14
  15 //------------------------------------------------------------------------------
  16 // Tests
  17 //------------------------------------------------------------------------------
  18
  19 const ruleTester = new RuleTester();
  20
  21 ruleTester.run("no-self-compare", rule, {
  22     valid: [
  23         "if (x === y) { }",
  24         "if (1 === 2) { }",
  25         "y=x*x",
  26         "foo.bar.baz === foo.bar.qux"
  27     ],
  28     invalid: [
  29         { code: "if (x === x) { }", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  30         { code: "if (x !== x) { }", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  31         { code: "if (x > x) { }", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  32         { code: "if ('x' > 'x') { }", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  33         { code: "do {} while (x === x)", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  34         { code: "x === x", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  35         { code: "x !== x", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  36         { code: "x == x", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  37         { code: "x != x", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  38         { code: "x > x", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  39         { code: "x < x", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  40         { code: "x >= x", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  41         { code: "x <= x", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] },
  42         { code: "foo.bar().baz.qux >= foo.bar ().baz .qux", errors: [{ messageId: "comparingToSelf", type: "BinaryExpression" }] }
  43     ]
  44 });