angular-cn/modules/angular2/test/change_detection/pipes/json_pipe_spec.js

98 lines
2.7 KiB
JavaScript

import {ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach,
AsyncTestCompleter, inject, proxy, SpyObject, IS_DARTIUM} from 'angular2/test_lib';
import {Json, RegExp, NumberWrapper, StringWrapper} from 'angular2/src/facade/lang';
import {JsonPipe} from 'angular2/src/change_detection/pipes/json_pipe';
export function main() {
describe("JsonPipe", () => {
var regNewLine = new RegExp('\n');
var canHasUndefined; // because Dart doesn't like undefined;
var inceptionObj;
var inceptionObjString;
var catString;
var pipe;
function normalize(obj: string): string {
return StringWrapper.replace(obj, regNewLine, '');
}
beforeEach(() => {
inceptionObj = {
dream: {
dream: {
dream: 'Limbo'
}
}
};
inceptionObjString = "{\n" +
" \"dream\": {\n" +
" \"dream\": {\n" +
" \"dream\": \"Limbo\"\n" +
" }\n" +
" }\n" +
"}";
catString = 'Inception Cat';
pipe = new JsonPipe();
});
describe("supports", () => {
it("should support objects", () => {
expect(pipe.supports(inceptionObj)).toBe(true);
});
it("should support strings", () => {
expect(pipe.supports(catString)).toBe(true);
});
it("should support null", () => {
expect(pipe.supports(null)).toBe(true);
});
it("should support NaN", () => {
expect(pipe.supports(NumberWrapper.NaN)).toBe(true);
});
if (!IS_DARTIUM) {
it("should support undefined", () => {
expect(pipe.supports(canHasUndefined)).toBe(true);
});
}
});
describe("transform", () => {
it("should return JSON-formatted string", () => {
expect(pipe.transform(inceptionObj)).toEqual(inceptionObjString);
});
it("should return JSON-formatted string even when normalized", () => {
var dream1 = normalize(pipe.transform(inceptionObj));
var dream2 = normalize(inceptionObjString);
expect(dream1).toEqual(dream2);
});
it("should return JSON-formatted string similar to Json.stringify", () => {
var dream1 = normalize(pipe.transform(inceptionObj));
var dream2 = normalize(Json.stringify(inceptionObj));
expect(dream1).toEqual(dream2);
});
it("should return same value when nothing has changed since the last call", () => {
expect(pipe.transform(inceptionObj)).toEqual(inceptionObjString);
expect(pipe.transform(inceptionObj)).toEqual(inceptionObjString);
});
});
describe("onDestroy", () => {
it("should do nothing when no latest value", () => {
expect(() => pipe.onDestroy()).not.toThrow();
});
});
});
}