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Copy pathmatchers.ts
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318 lines (281 loc) · 8.4 KB
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import {DOM} from 'angular2/src/platform/dom/dom_adapter';
import {global, isString} from 'angular2/src/facade/lang';
import {StringMapWrapper} from 'angular2/src/facade/collection';
/**
* Jasmine matchers that check Angular specific conditions.
*/
export interface NgMatchers extends jasmine.Matchers {
/**
* Expect the value to be a `Promise`.
*
* ## Example
*
* {@example testing/ts/matchers.ts region='toBePromise'}
*/
toBePromise(): boolean;
/**
* Expect the value to be an instance of a class.
*
* ## Example
*
* {@example testing/ts/matchers.ts region='toBeAnInstanceOf'}
*/
toBeAnInstanceOf(expected: any): boolean;
/**
* Expect the element to have exactly the given text.
*
* ## Example
*
* {@example testing/ts/matchers.ts region='toHaveText'}
*/
toHaveText(expected: any): boolean;
/**
* Expect the element to have the given CSS class.
*
* ## Example
*
* {@example testing/ts/matchers.ts region='toHaveCssClass'}
*/
toHaveCssClass(expected: any): boolean;
/**
* Expect the element to have the given CSS styles.
*
* ## Example
*
* {@example testing/ts/matchers.ts region='toHaveCssStyle'}
*/
toHaveCssStyle(expected: any): boolean;
/**
* Expect a class to implement the interface of the given class.
*
* ## Example
*
* {@example testing/ts/matchers.ts region='toImplement'}
*/
toImplement(expected: any): boolean;
/**
* Expect an exception to contain the given error text.
*
* ## Example
*
* {@example testing/ts/matchers.ts region='toContainError'}
*/
toContainError(expected: any): boolean;
/**
* Expect a function to throw an error with the given error text when executed.
*
* ## Example
*
* {@example testing/ts/matchers.ts region='toThrowErrorWith'}
*/
toThrowErrorWith(expectedMessage: any): boolean;
/**
* Expect a string to match the given regular expression.
*
* ## Example
*
* {@example testing/ts/matchers.ts region='toMatchPattern'}
*/
toMatchPattern(expectedMessage: any): boolean;
/**
* Invert the matchers.
*/
not: NgMatchers;
}
var _global = <any>(typeof window === 'undefined' ? global : window);
/**
* Jasmine matching function with Angular matchers mixed in.
*
* ## Example
*
* {@example testing/ts/matchers.ts region='toHaveText'}
*/
export var expect: (actual: any) => NgMatchers = <any>_global.expect;
// Some Map polyfills don't polyfill Map.toString correctly, which
// gives us bad error messages in tests.
// The only way to do this in Jasmine is to monkey patch a method
// to the object :-(
Map.prototype['jasmineToString'] = function() {
var m = this;
if (!m) {
return '' + m;
}
var res = [];
m.forEach((v, k) => { res.push(`${k}:${v}`); });
return `{ ${res.join(',')} }`;
};
_global.beforeEach(function() {
jasmine.addMatchers({
// Custom handler for Map as Jasmine does not support it yet
toEqual: function(util, customEqualityTesters) {
return {
compare: function(actual, expected) {
return {pass: util.equals(actual, expected, [compareMap])};
}
};
function compareMap(actual, expected) {
if (actual instanceof Map) {
var pass = actual.size === expected.size;
if (pass) {
actual.forEach((v, k) => { pass = pass && util.equals(v, expected.get(k)); });
}
return pass;
} else {
return undefined;
}
}
},
toBePromise: function() {
return {
compare: function(actual, expectedClass) {
var pass = typeof actual === 'object' && typeof actual.then === 'function';
return {pass: pass, get message() { return 'Expected ' + actual + ' to be a promise'; }};
}
};
},
toBeAnInstanceOf: function() {
return {
compare: function(actual, expectedClass) {
var pass = typeof actual === 'object' && actual instanceof expectedClass;
return {
pass: pass,
get message() {
return 'Expected ' + actual + ' to be an instance of ' + expectedClass;
}
};
}
};
},
toHaveText: function() {
return {
compare: function(actual, expectedText) {
var actualText = elementText(actual);
return {
pass: actualText == expectedText,
get message() { return 'Expected ' + actualText + ' to be equal to ' + expectedText; }
};
}
};
},
toHaveCssClass: function() {
return {compare: buildError(false), negativeCompare: buildError(true)};
function buildError(isNot) {
return function(actual, className) {
return {
pass: DOM.hasClass(actual, className) == !isNot,
get message() {
return `Expected ${actual.outerHTML} ${isNot ? 'not ' : ''}to contain the CSS class "${className}"`;
}
};
};
}
},
toHaveCssStyle: function() {
return {
compare: function(actual, styles) {
var allPassed;
if (isString(styles)) {
allPassed = DOM.hasStyle(actual, styles);
} else {
allPassed = !StringMapWrapper.isEmpty(styles);
StringMapWrapper.forEach(styles, (style, prop) => {
allPassed = allPassed && DOM.hasStyle(actual, prop, style);
});
}
return {
pass: allPassed,
get message() {
var expectedValueStr = isString(styles) ? styles : JSON.stringify(styles);
return `Expected ${actual.outerHTML} ${!allPassed ? ' ' : 'not '}to contain the
CSS ${isString(styles) ? 'property' : 'styles'} "${expectedValueStr}"`;
}
};
}
};
},
toContainError: function() {
return {
compare: function(actual, expectedText) {
var errorMessage = actual.toString();
return {
pass: errorMessage.indexOf(expectedText) > -1,
get message() { return 'Expected ' + errorMessage + ' to contain ' + expectedText; }
};
}
};
},
toThrowErrorWith: function() {
return {
compare: function(actual, expectedText) {
try {
actual();
return {
pass: false,
get message() { return "Was expected to throw, but did not throw"; }
};
} catch (e) {
var errorMessage = e.toString();
return {
pass: errorMessage.indexOf(expectedText) > -1,
get message() { return 'Expected ' + errorMessage + ' to contain ' + expectedText; }
};
}
}
};
},
toMatchPattern() {
return {compare: buildError(false), negativeCompare: buildError(true)};
function buildError(isNot) {
return function(actual, regex) {
return {
pass: regex.test(actual) == !isNot,
get message() {
return `Expected ${actual} ${isNot ? 'not ' : ''}to match ${regex.toString()}`;
}
};
};
}
},
toImplement: function() {
return {
compare: function(actualObject, expectedInterface) {
var objProps = Object.keys(actualObject.constructor.prototype);
var intProps = Object.keys(expectedInterface.prototype);
var missedMethods = [];
intProps.forEach((k) => {
if (!actualObject.constructor.prototype[k]) missedMethods.push(k);
});
return {
pass: missedMethods.length == 0,
get message() {
return 'Expected ' + actualObject + ' to have the following methods: ' +
missedMethods.join(", ");
}
};
}
};
}
});
});
function elementText(n) {
var hasNodes = (n) => {
var children = DOM.childNodes(n);
return children && children.length > 0;
};
if (n instanceof Array) {
return n.map(elementText).join("");
}
if (DOM.isCommentNode(n)) {
return '';
}
if (DOM.isElementNode(n) && DOM.tagName(n) == 'CONTENT') {
return elementText(Array.prototype.slice.apply(DOM.getDistributedNodes(n)));
}
if (DOM.hasShadowRoot(n)) {
return elementText(DOM.childNodesAsList(DOM.getShadowRoot(n)));
}
if (hasNodes(n)) {
return elementText(DOM.childNodesAsList(n));
}
return DOM.getText(n);
}