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/* 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, pipe, stripListeners } = require("sdk/event/utils");
const $ = require("./event/helpers");
function isEven(x) {
return !(x % 2);
}
function inc(x) {
return x + 1;
}
exports["test filter events"] = function(assert) {
let input = {};
let evens = filter(input, isEven);
let actual = [];
on(evens, "data", e => actual.push(e));
[1, 2, 3, 4, 5, 6, 7].forEach(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", e => actual.push(e));
[1, 2, 3, 4].forEach(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", $ => 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", $ => 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, $ => $()), "data", $ => 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 pipe"] = function (assert, done) {
let src = {};
let dest = {};
let aneventCount = 0, multiargsCount = 0;
let wildcardCount = {};
on(dest, 'an-event', arg => {
assert.equal(arg, 'my-arg', 'piped argument to event');
++aneventCount;
check();
});
on(dest, 'multiargs', (...data) => {
assert.equal(data[0], 'a', 'multiple arguments passed via pipe');
assert.equal(data[1], 'b', 'multiple arguments passed via pipe');
assert.equal(data[2], 'c', 'multiple arguments passed via pipe');
++multiargsCount;
check();
});
on(dest, '*', (name, ...data) => {
wildcardCount[name] = (wildcardCount[name] || 0) + 1;
if (name === 'multiargs') {
assert.equal(data[0], 'a', 'multiple arguments passed via pipe, wildcard');
assert.equal(data[1], 'b', 'multiple arguments passed via pipe, wildcard');
assert.equal(data[2], 'c', 'multiple arguments passed via pipe, wildcard');
}
if (name === 'an-event')
assert.equal(data[0], 'my-arg', 'argument passed via pipe, wildcard');
check();
});
pipe(src, dest);
for (let i = 0; i < 3; i++)
emit(src, 'an-event', 'my-arg');
emit(src, 'multiargs', 'a', 'b', 'c');
function check () {
if (aneventCount === 3 && multiargsCount === 1 &&
wildcardCount['an-event'] === 3 &&
wildcardCount['multiargs'] === 1)
done();
}
};
exports["test pipe multiple targets"] = function (assert) {
let src1 = {};
let src2 = {};
let middle = {};
let dest = {};
pipe(src1, middle);
pipe(src2, middle);
pipe(middle, dest);
let middleFired = 0;
let destFired = 0;
let src1Fired = 0;
let src2Fired = 0;
on(src1, '*', () => src1Fired++);
on(src2, '*', () => src2Fired++);
on(middle, '*', () => middleFired++);
on(dest, '*', () => destFired++);
emit(src1, 'ev');
assert.equal(src1Fired, 1, 'event triggers in source in pipe chain');
assert.equal(middleFired, 1, 'event passes through the middle of pipe chain');
assert.equal(destFired, 1, 'event propagates to end of pipe chain');
assert.equal(src2Fired, 0, 'event does not fire on alternative chain routes');
emit(src2, 'ev');
assert.equal(src2Fired, 1, 'event triggers in source in pipe chain');
assert.equal(middleFired, 2,
'event passes through the middle of pipe chain from different src');
assert.equal(destFired, 2,
'event propagates to end of pipe chain from different src');
assert.equal(src1Fired, 1, 'event does not fire on alternative chain routes');
emit(middle, 'ev');
assert.equal(middleFired, 3,
'event triggers in source of pipe chain');
assert.equal(destFired, 3,
'event propagates to end of pipe chain from middle src');
assert.equal(src1Fired, 1, 'event does not fire on alternative chain routes');
assert.equal(src2Fired, 1, 'event does not fire on alternative chain routes');
};
exports['test stripListeners'] = function (assert) {
var options = {
onAnEvent: noop1,
onMessage: noop2,
verb: noop1,
value: 100
};
var stripped = stripListeners(options);
assert.ok(stripped !== options, 'stripListeners should return a new object');
assert.equal(options.onAnEvent, noop1, 'stripListeners does not affect original');
assert.equal(options.onMessage, noop2, 'stripListeners does not affect original');
assert.equal(options.verb, noop1, 'stripListeners does not affect original');
assert.equal(options.value, 100, 'stripListeners does not affect original');
assert.ok(!stripped.onAnEvent, 'stripListeners removes `on*` values');
assert.ok(!stripped.onMessage, 'stripListeners removes `on*` values');
assert.equal(stripped.verb, noop1, 'stripListeners leaves not `on*` values');
assert.equal(stripped.value, 100, 'stripListeners leaves not `on*` values');
function noop1 () {}
function noop2 () {}
};
require('sdk/test').run(exports);
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