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115 lines
3.3 KiB
JavaScript
115 lines
3.3 KiB
JavaScript
/* global beforeEach, jasmine, PEG */
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"use strict";
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beforeEach(function() {
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this.addMatchers({
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toChangeAST: function(grammar) {
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function matchDetails(value, details) {
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function isArray(value) {
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return Object.prototype.toString.apply(value) === "[object Array]";
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}
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function isObject(value) {
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return value !== null && typeof value === "object";
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}
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var i, key;
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if (isArray(details)) {
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if (!isArray(value)) { return false; }
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if (value.length !== details.length) { return false; }
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for (i = 0; i < details.length; i++) {
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if (!matchDetails(value[i], details[i])) { return false; }
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}
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return true;
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} else if (isObject(details)) {
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if (!isObject(value)) { return false; }
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for (key in details) {
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if (details.hasOwnProperty(key)) {
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if (!(key in value)) { return false; }
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if (!matchDetails(value[key], details[key])) { return false; }
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}
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}
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return true;
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} else {
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return value === details;
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}
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}
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var options = arguments.length > 2 ? arguments[1] : {},
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details = arguments[arguments.length - 1],
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ast = PEG.parser.parse(grammar);
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this.actual(ast, options);
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this.message = function() {
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return "Expected the pass "
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+ "with options " + jasmine.pp(options) + " "
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+ (this.isNot ? "not " : "")
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+ "to change the AST " + jasmine.pp(ast) + " "
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+ "to match " + jasmine.pp(details) + ", "
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+ "but it " + (this.isNot ? "did" : "didn't") + ".";
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};
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return matchDetails(ast, details);
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},
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toReportError: function(grammar, details) {
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var ast = PEG.parser.parse(grammar);
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try {
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this.actual(ast);
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this.message = function() {
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return "Expected the pass to report an error "
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+ (details ? "with details " + jasmine.pp(details) + " ": "")
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+ "for grammar " + jasmine.pp(grammar) + ", "
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+ "but it didn't.";
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};
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return false;
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} catch (e) {
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/*
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* Should be at the top level but then JSHint complains about bad for
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* in variable.
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*/
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var key;
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if (this.isNot) {
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this.message = function() {
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return "Expected the pass not to report an error "
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+ "for grammar " + jasmine.pp(grammar) + ", "
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+ "but it did.";
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};
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} else {
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if (details) {
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for (key in details) {
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if (details.hasOwnProperty(key)) {
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if (!this.env.equals_(e[key], details[key])) {
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this.message = function() {
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return "Expected the pass to report an error "
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+ "with details " + jasmine.pp(details) + " "
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+ "for grammar " + jasmine.pp(grammar) + ", "
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+ "but " + jasmine.pp(key) + " "
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+ "is " + jasmine.pp(e[key]) + ".";
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};
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return false;
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}
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}
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}
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}
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}
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return true;
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}
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}
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});
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});
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