stryker/src/mutators/BinaryOperatorMutator.js

The extendable JavaScript mutation testing framework

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var esprima_1 = require("esprima");
var BinaryOperatorMutator = /** @class */ (function () {
    function BinaryOperatorMutator() {
        this.name = 'BinaryOperator';
        this.type = esprima_1.Syntax.BinaryExpression;
        this.operators = {
            '!=': '==',
            '!==': '===',
            '%': '*',
            '*': '/',
            '+': '-',
            '-': '+',
            '/': '*',
            '<': ['<=', '>='],
            '<=': ['<', '>'],
            '==': '!=',
            '===': '!==',
            '>': ['>=', '<='],
            '>=': ['>', '<']
        };
    }
    BinaryOperatorMutator.prototype.applyMutations = function (node, copy) {
        var nodes = [];
        if (node.type === this.type && this.operators[node.operator]) {
            var binaryNode_1 = node;
            var mutatedOperators = this.operators[node.operator];
            if (typeof mutatedOperators === 'string') {
                mutatedOperators = [mutatedOperators];
            }
            mutatedOperators.forEach(function (operator) {
                var mutatedNode = copy(binaryNode_1);
                mutatedNode.operator = operator;
                nodes.push(mutatedNode);
            });
        }
        return nodes;
    };
    return BinaryOperatorMutator;
}());
exports.default = BinaryOperatorMutator;
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