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[Imagery] Test mct-background-image

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WTD-1170.
This commit is contained in:
Victor Woeltjen 2015-06-17 20:51:41 -07:00
parent c41db4f22b
commit ba88281bd0
1 changed files with 67 additions and 0 deletions
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67
platform/features/imagery/test/directives/MCTBackgroundImageSpec.js
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@ -27,7 +27,74 @@ define(
"use strict";
describe("The mct-background-image directive", function () {
var mockDocument,
mockScope,
mockElement,
testImage,
directive;
beforeEach(function () {
mockDocument = [
jasmine.createSpyObj('document', ['createElement'])
];
mockScope = jasmine.createSpyObj('scope', ['$watch']);
mockElement = jasmine.createSpyObj('element', [ 'css' ]);
testImage = {};
mockDocument[0].createElement.andReturn(testImage);
directive = new MCTBackgroundImage(mockDocument);
});
it("is applicable as an attribute", function () {
expect(directive.restrict).toEqual("A");
});
it("two-way-binds its own value", function () {
expect(directive.scope.mctBackgroundImage).toEqual("=");
});
it("watches for changes to the URL", function () {
directive.link(mockScope, mockElement, {});
expect(mockScope.$watch).toHaveBeenCalledWith(
'mctBackgroundImage',
jasmine.any(Function)
);
});
it("updates images in-order, even when they load out-of-order", function () {
var firstOnload;
directive.link(mockScope, mockElement);
mockScope.$watch.mostRecentCall.args[1]("some/url/0");
firstOnload = testImage.onload;
mockScope.$watch.mostRecentCall.args[1]("some/url/1");
// Resolve in a different order
testImage.onload();
firstOnload();
// Should still have taken the more recent value
expect(mockElement.css.mostRecentCall.args).toEqual([
"background-image",
"url('some/url/1')"
]);
});
it("clears the background image when undefined is passed in", function () {
directive.link(mockScope, mockElement);
mockScope.$watch.mostRecentCall.args[1]("some/url/0");
testImage.onload();
mockScope.$watch.mostRecentCall.args[1](undefined);
expect(mockElement.css.mostRecentCall.args).toEqual([
"background-image",
undefined
]);
});
});
}
);