mirror of
https://github.com/robertkrimen/otto.git
synced 2024-05-31 14:13:44 +08:00
026a1d9a9c
Enable more linters, address the issues and do a major naming refactor to use golang lower camelCase identifiers for types, functions, methods and variable names. Also: * Clean up inline generation so it doesn't rely on temporary variables. * Remove unused functions generated by inline.pl.
199 lines
5.8 KiB
Go
199 lines
5.8 KiB
Go
package otto
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import (
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"testing"
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)
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// bind.
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func Test_underscore_functions_0(t *testing.T) {
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tt(t, func() {
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test := underscoreTest()
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test(`
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test("bind", function() {
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var context = {name : 'moe'};
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var func = function(arg) { return "name: " + (this.name || arg); };
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var bound = _.bind(func, context);
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equal(bound(), 'name: moe', 'can bind a function to a context');
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bound = _(func).bind(context);
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equal(bound(), 'name: moe', 'can do OO-style binding');
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bound = _.bind(func, null, 'curly');
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equal(bound(), 'name: curly', 'can bind without specifying a context');
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func = function(salutation, name) { return salutation + ': ' + name; };
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func = _.bind(func, this, 'hello');
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equal(func('moe'), 'hello: moe', 'the function was partially applied in advance');
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func = _.bind(func, this, 'curly');
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equal(func(), 'hello: curly', 'the function was completely applied in advance');
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func = function(salutation, firstname, lastname) { return salutation + ': ' + firstname + ' ' + lastname; };
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func = _.bind(func, this, 'hello', 'moe', 'curly');
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equal(func(), 'hello: moe curly', 'the function was partially applied in advance and can accept multiple arguments');
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func = function(context, message) { equal(this, context, message); };
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_.bind(func, 0, 0, 'can bind a function to <0>')();
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_.bind(func, '', '', 'can bind a function to an empty string')();
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_.bind(func, false, false, 'can bind a function to <false>')();
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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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equal(Boundf().hello, "moe curly", "When called without the new operator, it's OK to be bound to the context");
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});
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`)
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})
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}
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// partial.
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func Test_underscore_functions_1(t *testing.T) {
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tt(t, func() {
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test := underscoreTest()
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test(`
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test("partial", function() {
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var obj = {name: 'moe'};
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var func = function() { return this.name + ' ' + _.toArray(arguments).join(' '); };
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obj.func = _.partial(func, 'a', 'b');
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equal(obj.func('c', 'd'), 'moe a b c d', 'can partially apply');
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});
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`)
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})
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}
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// bindAll.
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func Test_underscore_functions_2(t *testing.T) {
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tt(t, func() {
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test := underscoreTest()
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test(`
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test("bindAll", function() {
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var curly = {name : 'curly'}, 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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};
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curly.getName = moe.getName;
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_.bindAll(moe, 'getName', 'sayHi');
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curly.sayHi = moe.sayHi;
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equal(curly.getName(), 'name: curly', 'unbound function is bound to current object');
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equal(curly.sayHi(), 'hi: moe', 'bound function is still bound to original object');
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});
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`)
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})
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}
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// memoize.
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func Test_underscore_functions_3(t *testing.T) {
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tt(t, func() {
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test := underscoreTest()
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test(`
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test("memoize", function() {
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var fib = function(n) {
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return n < 2 ? n : fib(n - 1) + fib(n - 2);
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};
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var fastFib = _.memoize(fib);
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equal(fib(10), 55, 'a memoized version of fibonacci produces identical results');
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equal(fastFib(10), 55, 'a memoized version of fibonacci produces identical results');
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var o = function(str) {
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return str;
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};
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var fastO = _.memoize(o);
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equal(o('toString'), 'toString', 'checks hasOwnProperty');
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equal(fastO('toString'), 'toString', 'checks hasOwnProperty');
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});
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`)
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})
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}
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// once.
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func Test_underscore_functions_4(t *testing.T) {
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tt(t, func() {
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test := underscoreTest()
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test(`
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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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increment();
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increment();
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equal(num, 1);
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});
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`)
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})
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}
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// wrap.
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func Test_underscore_functions_5(t *testing.T) {
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tt(t, func() {
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test := underscoreTest()
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test(`
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test("wrap", function() {
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var greet = function(name){ return "hi: " + name; };
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var backwards = _.wrap(greet, function(func, name){ return func(name) + ' ' + name.split('').reverse().join(''); });
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equal(backwards('moe'), 'hi: moe eom', 'wrapped the saluation function');
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var inner = function(){ return "Hello "; };
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var obj = {name : "Moe"};
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obj.hi = _.wrap(inner, function(fn){ return fn() + this.name; });
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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 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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`)
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})
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}
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// compose.
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func Test_underscore_functions_6(t *testing.T) {
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tt(t, func() {
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test := underscoreTest()
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test(`
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test("compose", function() {
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var greet = function(name){ return "hi: " + name; };
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var exclaim = function(sentence){ return sentence + '!'; };
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var composed = _.compose(exclaim, greet);
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equal(composed('moe'), 'hi: moe!', 'can compose a function that takes another');
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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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});
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`)
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})
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}
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// after.
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func Test_underscore_functions_7(t *testing.T) {
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tt(t, func() {
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test := underscoreTest()
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test(`
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test("after", function() {
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var testAfter = function(afterAmount, timesCalled) {
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var afterCalled = 0;
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var after = _.after(afterAmount, function() {
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afterCalled++;
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});
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while (timesCalled--) after();
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return afterCalled;
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};
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equal(testAfter(5, 5), 1, "after(N) should fire after being called N times");
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equal(testAfter(5, 4), 0, "after(N) should not fire unless called N times");
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equal(testAfter(0, 1), 1, "after(0) should fire immediately");
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});
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`)
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})
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}
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