gecko-dev/addon-sdk/source/test/test-event-utils.js

170 строки
5.0 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
'use strict';
const { on, emit } = require("sdk/event/core");
const { filter, map, merge, expand } = require("sdk/event/utils");
const $ = require("./event/helpers");
function isEven(x) !(x % 2)
function inc(x) x + 1
exports["test filter events"] = function(assert) {
let input = {};
let evens = filter(input, isEven);
let actual = [];
on(evens, "data", function(e) actual.push(e));
[1, 2, 3, 4, 5, 6, 7].forEach(function(x) emit(input, "data", x));
assert.deepEqual(actual, [2, 4, 6], "only even numbers passed through");
};
exports["test filter emits"] = $.emits(function(input, assert) {
let output = filter(input, isEven);
assert(output, [1, 2, 3, 4, 5], [2, 4], "this is `output` & evens passed");
});;
exports["test filter reg once"] = $.registerOnce(function(input, assert) {
assert(filter(input, isEven), [1, 2, 3, 4, 5, 6], [2, 4, 6],
"listener can be registered only once");
});
exports["test filter ignores new"] = $.ignoreNew(function(input, assert) {
assert(filter(input, isEven), [1, 2, 3], [2],
"new listener is ignored")
});
exports["test filter is FIFO"] = $.FIFO(function(input, assert) {
assert(filter(input, isEven), [1, 2, 3, 4], [2, 4],
"listeners are invoked in fifo order")
});
exports["test map events"] = function(assert) {
let input = {};
let incs = map(input, inc);
let actual = [];
on(incs, "data", function(e) actual.push(e));
[1, 2, 3, 4].forEach(function(x) emit(input, "data", x));
assert.deepEqual(actual, [2, 3, 4, 5], "all numbers were incremented");
};
exports["test map emits"] = $.emits(function(input, assert) {
let output = map(input, inc);
assert(output, [1, 2, 3], [2, 3, 4], "this is `output` & evens passed");
});;
exports["test map reg once"] = $.registerOnce(function(input, assert) {
assert(map(input, inc), [1, 2, 3], [2, 3, 4],
"listener can be registered only once");
});
exports["test map ignores new"] = $.ignoreNew(function(input, assert) {
assert(map(input, inc), [1], [2],
"new listener is ignored")
});
exports["test map is FIFO"] = $.FIFO(function(input, assert) {
assert(map(input, inc), [1, 2, 3, 4], [2, 3, 4, 5],
"listeners are invoked in fifo order")
});
exports["test merge stream[stream]"] = function(assert) {
let a = {}, b = {}, c = {};
let inputs = {};
let actual = [];
on(merge(inputs), "data", function($) actual.push($))
emit(inputs, "data", a);
emit(a, "data", "a1");
emit(inputs, "data", b);
emit(b, "data", "b1");
emit(a, "data", "a2");
emit(inputs, "data", c);
emit(c, "data", "c1");
emit(c, "data", "c2");
emit(b, "data", "b2");
emit(a, "data", "a3");
assert.deepEqual(actual, ["a1", "b1", "a2", "c1", "c2", "b2", "a3"],
"all inputs data merged into one");
};
exports["test merge array[stream]"] = function(assert) {
let a = {}, b = {}, c = {};
let inputs = {};
let actual = [];
on(merge([a, b, c]), "data", function($) actual.push($))
emit(a, "data", "a1");
emit(b, "data", "b1");
emit(a, "data", "a2");
emit(c, "data", "c1");
emit(c, "data", "c2");
emit(b, "data", "b2");
emit(a, "data", "a3");
assert.deepEqual(actual, ["a1", "b1", "a2", "c1", "c2", "b2", "a3"],
"all inputs data merged into one");
};
exports["test merge emits"] = $.emits(function(input, assert) {
let evens = filter(input, isEven)
let output = merge([evens, input]);
assert(output, [1, 2, 3], [1, 2, 2, 3], "this is `output` & evens passed");
});
exports["test merge reg once"] = $.registerOnce(function(input, assert) {
let evens = filter(input, isEven)
let output = merge([input, evens]);
assert(output, [1, 2, 3, 4], [1, 2, 2, 3, 4, 4],
"listener can be registered only once");
});
exports["test merge ignores new"] = $.ignoreNew(function(input, assert) {
let evens = filter(input, isEven)
let output = merge([input, evens])
assert(output, [1], [1],
"new listener is ignored")
});
exports["test marge is FIFO"] = $.FIFO(function(input, assert) {
let evens = filter(input, isEven)
let output = merge([input, evens])
assert(output, [1, 2, 3, 4], [1, 2, 2, 3, 4, 4],
"listeners are invoked in fifo order")
});
exports["test expand"] = function(assert) {
let a = {}, b = {}, c = {};
let inputs = {};
let actual = [];
on(expand(inputs, function($) $()), "data", function($) actual.push($))
emit(inputs, "data", function() a);
emit(a, "data", "a1");
emit(inputs, "data", function() b);
emit(b, "data", "b1");
emit(a, "data", "a2");
emit(inputs, "data", function() c);
emit(c, "data", "c1");
emit(c, "data", "c2");
emit(b, "data", "b2");
emit(a, "data", "a3");
assert.deepEqual(actual, ["a1", "b1", "a2", "c1", "c2", "b2", "a3"],
"all inputs data merged into one");
}
require('test').run(exports);