angular-cn/modules/angular2/test/change_detection/coalesce_spec.js

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import {ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
import {coalesce} from 'angular2/src/change_detection/coalesce';
import {RECORD_TYPE_SELF, ProtoRecord} from 'angular2/src/change_detection/proto_record';
export function main() {
function r(funcOrValue, args, contextIndex, selfIndex, lastInBinding = false) {
return new ProtoRecord(99, "name", funcOrValue, args, null, contextIndex, selfIndex,
null, null, lastInBinding, false);
}
describe("change detection - coalesce", () => {
it("should work with an empty list", () => {
expect(coalesce([])).toEqual([]);
});
it("should remove non-terminal duplicate records" +
" and update the context indices referencing them", () => {
var rs = coalesce([
r("user", [], 0, 1),
r("first", [], 1, 2),
r("user", [], 0, 3),
r("last", [], 3, 4)
]);
expect(rs).toEqual([
r("user", [], 0, 1),
r("first", [], 1, 2),
r("last", [], 1, 3)
]);
});
it("should update indices of other records", () => {
var rs = coalesce([
r("dup", [], 0, 1),
r("dup", [], 0, 2),
r("user", [], 0, 3),
r("first", [3], 3, 4)
]);
expect(rs).toEqual([
r("dup", [], 0, 1),
r("user", [], 0, 2),
r("first", [2], 2, 3)
]);
});
it("should remove non-terminal duplicate records" +
" and update the args indices referencing them", () => {
var rs = coalesce([
r("user1", [], 0, 1),
r("user2", [], 0, 2),
r("hi", [1], 0, 3),
r("hi", [1], 0, 4),
r("hi", [2], 0, 5)
]);
expect(rs).toEqual([
r("user1", [], 0, 1),
r("user2", [], 0, 2),
r("hi", [1], 0, 3),
r("hi", [2], 0, 4)
]);
});
it("should replace duplicate terminal records with" +
" self records", () => {
var rs = coalesce([
r("user", [], 0, 1, true),
r("user", [], 0, 2, true)
]);
expect(rs[1]).toEqual(new ProtoRecord(
RECORD_TYPE_SELF, "self", null,
[], null, 1, 2,
null, null,
true, false)
);
});
});
}