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

89 lines
2.6 KiB
TypeScript

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 = '\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(); });
});
});
}