mirror of
https://github.com/whoisclebs/lodash.git
synced 2026-02-11 19:37:49 +00:00
Update deps.
This commit is contained in:
122
vendor/underscore/test/functions.js
vendored
122
vendor/underscore/test/functions.js
vendored
@@ -33,10 +33,11 @@
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// These tests are only meaningful when using a browser without a native bind function
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// To test this with a modern browser, set underscore's nativeBind to undefined
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var F = function () { return this; };
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var Boundf = _.bind(F, {hello: 'moe curly'});
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var boundf = _.bind(F, {hello: 'moe curly'});
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var Boundf = boundf; // make eslint happy.
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var newBoundf = new Boundf();
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equal(newBoundf.hello, undefined, 'function should not be bound to the context, to comply with ECMAScript 5');
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equal(Boundf().hello, 'moe curly', "When called without the new operator, it's OK to be bound to the context");
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equal(boundf().hello, 'moe curly', "When called without the new operator, it's OK to be bound to the context");
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ok(newBoundf instanceof F, 'a bound instance is an instance of the original function');
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raises(function() { _.bind('notafunction'); }, TypeError, 'throws an error when binding to a non-function');
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@@ -76,14 +77,20 @@
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moe = {
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name : 'moe',
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getName : function() { return 'name: ' + this.name; },
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sayHi : function() { return 'hi: ' + this.name; }
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sayHi : function() { return 'hi: ' + this.name; },
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sayLast : function() { return this.sayHi(_.last(arguments)); }
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};
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raises(function() { _.bindAll(moe); }, Error, 'throws an error for bindAll with no functions named');
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raises(function() { _.bindAll(moe, 'sayBye'); }, TypeError, 'throws an error for bindAll if the given key is undefined');
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raises(function() { _.bindAll(moe, 'name'); }, TypeError, 'throws an error for bindAll if the given key is not a function');
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_.bindAll(moe, 'sayHi');
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_.bindAll(moe, 'sayHi', 'sayLast');
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curly.sayHi = moe.sayHi;
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equal(curly.sayHi(), 'hi: moe');
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var sayLast = moe.sayLast;
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equal(sayLast(1, 2, 3, 4, 5, 6, 7, 'Tom'), 'hi: moe', 'createCallback works with any number of arguments');
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});
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test('memoize', function() {
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@@ -111,6 +118,28 @@
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upper.cache = {foo: 'BAR', bar: 'FOO'};
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equal(upper('foo'), 'BAR');
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equal(upper('bar'), 'FOO');
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var hashed = _.memoize(function(key) {
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//https://github.com/jashkenas/underscore/pull/1679#discussion_r13736209
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ok(/[a-z]+/.test(key), 'hasher doesn\'t change keys');
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return key;
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}, function(key) {
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return key.toUpperCase();
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});
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hashed('yep');
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deepEqual(hashed.cache, {'YEP': 'yep'}, 'takes a hasher');
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// Test that the hash function can be used to swizzle the key.
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var objCacher = _.memoize(function(value, key) {
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return {key: key, value: value};
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}, function(value, key) {
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return key;
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});
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var myObj = objCacher('a', 'alpha');
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var myObjAlias = objCacher('b', 'alpha');
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notStrictEqual(myObj, undefined, 'object is created if second argument used as key');
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strictEqual(myObj, myObjAlias, 'object is cached if second argument used as key');
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strictEqual(myObj.value, 'a', 'object is not modified if second argument used as key');
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});
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asyncTest('delay', 2, function() {
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@@ -170,11 +199,11 @@
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var incr = function(){ counter++; };
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var throttledIncr = _.throttle(incr, 30);
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throttledIncr(); throttledIncr();
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ok(counter == 1);
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equal(counter, 1);
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_.delay(function(){
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ok(counter == 2);
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equal(counter, 2);
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throttledIncr();
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ok(counter == 3);
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equal(counter, 3);
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start();
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}, 85);
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});
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@@ -208,7 +237,7 @@
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var throttledIncr = _.throttle(incr, 32);
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var stamp = new Date;
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while ((new Date - stamp) < limit) {
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while (new Date - stamp < limit) {
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throttledIncr();
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}
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var lastCount = counter;
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@@ -226,10 +255,10 @@
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var throttledIncr = _.throttle(incr, 60, {leading: false});
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throttledIncr(); throttledIncr();
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ok(counter === 0);
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equal(counter, 0);
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_.delay(function() {
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ok(counter == 1);
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equal(counter, 1);
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start();
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}, 96);
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});
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@@ -243,14 +272,14 @@
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_.delay(throttledIncr, 50);
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_.delay(throttledIncr, 60);
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_.delay(throttledIncr, 200);
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ok(counter === 0);
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equal(counter, 0);
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_.delay(function() {
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ok(counter == 1);
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equal(counter, 1);
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}, 250);
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_.delay(function() {
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ok(counter == 2);
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equal(counter, 2);
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start();
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}, 350);
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});
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@@ -276,16 +305,16 @@
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var throttledIncr = _.throttle(incr, 60, {trailing: false});
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throttledIncr(); throttledIncr(); throttledIncr();
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ok(counter === 1);
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equal(counter, 1);
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_.delay(function() {
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ok(counter == 1);
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equal(counter, 1);
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throttledIncr(); throttledIncr();
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ok(counter == 2);
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equal(counter, 2);
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_.delay(function() {
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ok(counter == 2);
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equal(counter, 2);
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start();
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}, 96);
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}, 96);
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@@ -298,14 +327,14 @@
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var origNowFunc = _.now;
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throttledIncr();
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ok(counter == 1);
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equal(counter, 1);
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_.now = function () {
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return new Date(2013, 0, 1, 1, 1, 1);
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};
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_.delay(function() {
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throttledIncr();
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ok(counter == 2);
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equal(counter, 2);
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start();
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_.now = origNowFunc;
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}, 200);
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@@ -320,7 +349,7 @@
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var throttledAppend;
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var append = function(arg){
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value += this + arg;
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var args = sequence.pop()
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var args = sequence.pop();
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if (args) {
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throttledAppend.call(args[0], args[1]);
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}
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@@ -400,7 +429,7 @@
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var debouncedAppend;
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var append = function(arg){
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value += this + arg;
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var args = sequence.pop()
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var args = sequence.pop();
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if (args) {
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debouncedAppend.call(args[0], args[1]);
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}
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@@ -416,10 +445,12 @@
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test('once', function() {
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var num = 0;
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var increment = _.once(function(){ num++; });
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var increment = _.once(function(){ return ++num; });
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increment();
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increment();
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equal(num, 1);
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equal(increment(), 1, 'stores a memo to the last value');
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});
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test('Recursive onced function.', 1, function() {
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@@ -441,13 +472,13 @@
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equal(obj.hi(), 'Hello Moe');
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var noop = function(){};
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var wrapped = _.wrap(noop, function(fn){ return Array.prototype.slice.call(arguments, 0); });
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var wrapped = _.wrap(noop, function(){ return Array.prototype.slice.call(arguments, 0); });
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var ret = wrapped(['whats', 'your'], 'vector', 'victor');
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deepEqual(ret, [noop, ['whats', 'your'], 'vector', 'victor']);
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});
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test('negate', function() {
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var isOdd = function(n){ return (n & 1) == 1; };
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var isOdd = function(n){ return n & 1; };
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equal(_.negate(isOdd)(2), true, 'should return the complement of the given function');
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equal(_.negate(isOdd)(3), false, 'should return the complement of the given function');
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});
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@@ -460,6 +491,22 @@
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composed = _.compose(greet, exclaim);
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equal(composed('moe'), 'hi: moe!', 'in this case, the functions are also commutative');
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// f(g(h(x, y, z)))
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function h(x, y, z) {
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equal(arguments.length, 3, 'First function called with multiple args');
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return z * y;
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}
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function g(x) {
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equal(arguments.length, 1, 'Composed function is called with 1 argument');
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return x;
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}
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function f(x) {
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equal(arguments.length, 1, 'Composed function is called with 1 argument');
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return x * 2;
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}
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composed = _.compose(f, g, h);
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equal(composed(1, 2, 3), 12);
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});
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test('after', function() {
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@@ -478,4 +525,29 @@
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equal(testAfter(0, 1), 1, 'after(0) should fire when first invoked');
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});
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})();
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test('before', function() {
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var testBefore = function(beforeAmount, timesCalled) {
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var beforeCalled = 0;
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var before = _.before(beforeAmount, function() { beforeCalled++; });
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while (timesCalled--) before();
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return beforeCalled;
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};
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equal(testBefore(5, 5), 4, 'before(N) should not fire after being called N times');
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equal(testBefore(5, 4), 4, 'before(N) should fire before being called N times');
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equal(testBefore(0, 0), 0, 'before(0) should not fire immediately');
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equal(testBefore(0, 1), 0, 'before(0) should not fire when first invoked');
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var context = {num: 0};
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var increment = _.before(3, function(){ return ++this.num; });
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_.times(10, increment, context);
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equal(increment(), 2, 'stores a memo to the last value');
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equal(context.num, 2, 'provides context');
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});
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test('iteratee', function() {
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var identity = _.iteratee();
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equal(identity, _.identity, '_.iteratee is exposed as an external function.');
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});
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}());
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