mirror of
https://github.com/Hopiu/angular.js.git
synced 2026-03-17 15:40:22 +00:00
758 lines
23 KiB
JavaScript
758 lines
23 KiB
JavaScript
'use strict';
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describe('injector', function() {
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var providers;
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var injector;
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beforeEach(module(function($provide) {
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providers = function(name, factory, annotations) {
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$provide.factory(name, extend(factory, annotations||{}));
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};
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}));
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beforeEach(inject(function($injector){
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injector = $injector;
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}));
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it("should return same instance from calling provider", function() {
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var instance = {},
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original = instance;
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providers('instance', function() { return instance; });
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expect(injector.get('instance')).toEqual(instance);
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instance = 'deleted';
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expect(injector.get('instance')).toEqual(original);
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});
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it('should inject providers', function() {
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providers('a', function() {return 'Mi';});
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providers('b', function(mi) {return mi+'sko';}, {$inject:['a']});
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expect(injector.get('b')).toEqual('Misko');
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});
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it('should resolve dependency graph and instantiate all services just once', function() {
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var log = [];
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// s1
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// / | \
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// / s2 \
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// / / | \ \
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// /s3 < s4 > s5
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// //
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// s6
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providers('s1', function() { log.push('s1'); }, {$inject: ['s2', 's5', 's6']});
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providers('s2', function() { log.push('s2'); }, {$inject: ['s3', 's4', 's5']});
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providers('s3', function() { log.push('s3'); }, {$inject: ['s6']});
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providers('s4', function() { log.push('s4'); }, {$inject: ['s3', 's5']});
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providers('s5', function() { log.push('s5'); });
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providers('s6', function() { log.push('s6'); });
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injector.get('s1');
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expect(log).toEqual(['s6', 's3', 's5', 's4', 's2', 's1']);
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});
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it('should provide useful message if no provider', function() {
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expect(function() {
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injector.get('idontexist');
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}).toThrow("Unknown provider: idontexistProvider <- idontexist");
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});
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it('should proved path to the missing provider', function() {
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providers('a', function(idontexist) {return 1;});
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providers('b', function(a) {return 2;});
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expect(function() {
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injector.get('b');
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}).toThrow("Unknown provider: idontexistProvider <- idontexist <- a <- b");
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});
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describe('invoke', function() {
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var args;
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beforeEach(function() {
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args = null;
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providers('a', function() {return 1;});
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providers('b', function() {return 2;});
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});
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function fn(a, b, c, d) {
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args = [this, a, b, c, d];
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return a + b + c + d;
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}
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it('should call function', function() {
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fn.$inject = ['a', 'b', 'c', 'd'];
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injector.invoke(fn, {name:"this"}, {c:3, d:4});
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expect(args).toEqual([{name:'this'}, 1, 2, 3, 4]);
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});
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it('should treat array as annotations', function() {
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injector.invoke(['a', 'b', 'c', 'd', fn], {name:"this"}, {c:3, d:4});
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expect(args).toEqual([{name:'this'}, 1, 2, 3, 4]);
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});
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it('should invoke the passed-in fn with all of the dependencies as arguments', function() {
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providers('c', function() {return 3;});
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providers('d', function() {return 4;});
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expect(injector.invoke(['a', 'b', 'c', 'd', fn])).toEqual(10);
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});
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it('should fail with errors if not function or array', function() {
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expect(function() {
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injector.invoke({});
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}).toThrow("Argument 'fn' is not a function, got Object");
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expect(function() {
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injector.invoke(['a', 123], {});
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}).toThrow("Argument 'fn' is not a function, got number");
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});
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});
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describe('annotation', function() {
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it('should return $inject', function() {
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function fn() {}
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fn.$inject = ['a'];
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expect(inferInjectionArgs(fn)).toBe(fn.$inject);
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expect(inferInjectionArgs(function() {})).toEqual([]);
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expect(inferInjectionArgs(function () {})).toEqual([]);
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expect(inferInjectionArgs(function () {})).toEqual([]);
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expect(inferInjectionArgs(function /* */ () {})).toEqual([]);
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});
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it('should create $inject', function() {
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// keep the multi-line to make sure we can handle it
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function $f_n0 /*
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*/(
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$a, // x, <-- looks like an arg but it is a comment
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b_, /* z, <-- looks like an arg but it is a
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multi-line comment
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function (a, b) {}
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*/
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_c,
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/* {some type} */ d) { extraParans();}
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expect(inferInjectionArgs($f_n0)).toEqual(['$a', 'b_', '_c', 'd']);
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expect($f_n0.$inject).toEqual(['$a', 'b_', '_c', 'd']);
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});
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it('should handle no arg functions', function() {
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function $f_n0() {}
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expect(inferInjectionArgs($f_n0)).toEqual([]);
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expect($f_n0.$inject).toEqual([]);
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});
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it('should handle args with both $ and _', function() {
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function $f_n0($a_) {}
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expect(inferInjectionArgs($f_n0)).toEqual(['$a_']);
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expect($f_n0.$inject).toEqual(['$a_']);
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});
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it('should throw on non function arg', function() {
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expect(function() {
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inferInjectionArgs({});
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}).toThrow();
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});
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});
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it('should have $injector', function() {
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var $injector = createInjector();
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expect($injector.get('$injector')).toBe($injector);
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});
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it('should define module', function() {
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var log = '';
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var injector = createInjector([function($provide) {
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$provide.value('value', 'value;');
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$provide.factory('fn', valueFn('function;'));
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$provide.provider('service', function() {
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this.$get = valueFn('service;');
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});
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}, function(valueProvider, fnProvider, serviceProvider) {
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log += valueProvider.$get() + fnProvider.$get() + serviceProvider.$get();
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}]).invoke(function(value, fn, service) {
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log += '->' + value + fn + service;
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});
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expect(log).toEqual('value;function;service;->value;function;service;');
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});
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describe('module', function() {
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it('should provide $injector even when no module is requested', function() {
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var $provide,
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$injector = createInjector([
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angular.extend(function(p) { $provide = p; }, {$inject: ['$provide']})
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]);
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expect($injector.get('$injector')).toBe($injector);
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});
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it('should load multiple function modules and infer inject them', function() {
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var a = 'junk';
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var $injector = createInjector([
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function() {
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a = 'A'; // reset to prove we ran
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},
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function($provide) {
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$provide.value('a', a);
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},
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angular.extend(function(p, serviceA) {
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p.value('b', serviceA.$get() + 'B' );
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}, {$inject:['$provide', 'aProvider']}),
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['$provide', 'bProvider', function(p, serviceB) {
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p.value('c', serviceB.$get() + 'C');
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}]
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]);
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expect($injector.get('a')).toEqual('A');
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expect($injector.get('b')).toEqual('AB');
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expect($injector.get('c')).toEqual('ABC');
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});
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it('should run symbolic modules', function() {
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angularModule('myModule', []).value('a', 'abc');
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var $injector = createInjector(['myModule']);
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expect($injector.get('a')).toEqual('abc');
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});
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it('should error on invalid module name', function() {
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expect(function() {
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createInjector(['IDontExist'], {});
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}).toThrow("No module: IDontExist");
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});
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it('should load dependant modules only once', function() {
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var log = '';
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angular.module('a', [], function(){ log += 'a'; });
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angular.module('b', ['a'], function(){ log += 'b'; });
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angular.module('c', ['a', 'b'], function(){ log += 'c'; });
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createInjector(['c', 'c']);
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expect(log).toEqual('abc');
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});
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it('should execute runBlocks after injector creation', function() {
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var log = '';
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angular.module('a', [], function(){ log += 'a'; }).run(function() { log += 'A'; });
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angular.module('b', ['a'], function(){ log += 'b'; }).run(function() { log += 'B'; });
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createInjector([
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'b',
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valueFn(function() { log += 'C'; }),
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[valueFn(function() { log += 'D'; })]
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]);
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expect(log).toEqual('abABCD');
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});
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describe('$provide', function() {
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describe('constant', function() {
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it('should create configuration injectable constants', function() {
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var log = [];
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createInjector([
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function($provide){
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$provide.constant('abc', 123);
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$provide.constant({a: 'A', b:'B'});
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return function(a) {
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log.push(a);
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}
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},
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function(abc) {
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log.push(abc);
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return function(b) {
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log.push(b);
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}
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}
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]).get('abc');
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expect(log).toEqual([123, 'A', 'B']);
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});
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});
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describe('value', function() {
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it('should configure $provide values', function() {
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expect(createInjector([function($provide) {
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$provide.value('value', 'abc');
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}]).get('value')).toEqual('abc');
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});
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it('should configure a set of values', function() {
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expect(createInjector([function($provide) {
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$provide.value({value: Array});
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}]).get('value')).toEqual(Array);
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});
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});
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describe('factory', function() {
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it('should configure $provide factory function', function() {
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expect(createInjector([function($provide) {
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$provide.factory('value', valueFn('abc'));
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}]).get('value')).toEqual('abc');
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});
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it('should configure a set of factories', function() {
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expect(createInjector([function($provide) {
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$provide.factory({value: Array});
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}]).get('value')).toEqual([]);
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});
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});
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describe('service', function() {
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it('should register a class', function() {
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var Type = function(value) {
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this.value = value;
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};
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var instance = createInjector([function($provide) {
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$provide.value('value', 123);
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$provide.service('foo', Type);
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}]).get('foo');
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expect(instance instanceof Type).toBe(true);
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expect(instance.value).toBe(123);
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});
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it('should register a set of classes', function() {
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var Type = function() {};
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var injector = createInjector([function($provide) {
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$provide.service({
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foo: Type,
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bar: Type
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});
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}]);
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expect(injector.get('foo') instanceof Type).toBe(true);
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expect(injector.get('bar') instanceof Type).toBe(true);
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});
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});
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describe('provider', function() {
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it('should configure $provide provider object', function() {
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expect(createInjector([function($provide) {
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$provide.provider('value', {
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$get: valueFn('abc')
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});
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}]).get('value')).toEqual('abc');
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});
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it('should configure $provide provider type', function() {
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function Type() {};
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Type.prototype.$get = function() {
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expect(this instanceof Type).toBe(true);
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return 'abc';
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};
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expect(createInjector([function($provide) {
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$provide.provider('value', Type);
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}]).get('value')).toEqual('abc');
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});
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it('should configure a set of providers', function() {
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expect(createInjector([function($provide) {
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$provide.provider({value: valueFn({$get:Array})});
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}]).get('value')).toEqual([]);
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});
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});
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describe('decorator', function() {
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var log, injector;
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beforeEach(function() {
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log = [];
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});
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it('should be called with the original instance', function() {
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injector = createInjector([function($provide) {
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$provide.value('myService', function(val) {
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log.push('myService:' + val);
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return 'origReturn';
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});
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$provide.decorator('myService', function($delegate) {
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return function(val) {
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log.push('myDecoratedService:' + val);
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var origVal = $delegate('decInput');
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return 'dec+' + origVal;
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};
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});
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}]);
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var out = injector.get('myService')('input');
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log.push(out);
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expect(log.join('; ')).
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toBe('myDecoratedService:input; myService:decInput; dec+origReturn');
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});
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it('should allow multiple decorators to be applied to a service', function() {
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injector = createInjector([function($provide) {
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$provide.value('myService', function(val) {
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log.push('myService:' + val);
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return 'origReturn';
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});
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$provide.decorator('myService', function($delegate) {
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return function(val) {
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log.push('myDecoratedService1:' + val);
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var origVal = $delegate('decInput1');
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return 'dec1+' + origVal;
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};
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});
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$provide.decorator('myService', function($delegate) {
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return function(val) {
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log.push('myDecoratedService2:' + val);
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var origVal = $delegate('decInput2');
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return 'dec2+' + origVal;
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};
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});
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}]);
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var out = injector.get('myService')('input');
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log.push(out);
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expect(log).toEqual(['myDecoratedService2:input',
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'myDecoratedService1:decInput2',
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'myService:decInput1',
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'dec2+dec1+origReturn']);
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});
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it('should decorate services with dependencies', function() {
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injector = createInjector([function($provide) {
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$provide.value('dep1', 'dependency1');
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$provide.factory('myService', ['dep1', function(dep1) {
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return function(val) {
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log.push('myService:' + val + ',' + dep1);
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return 'origReturn';
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}
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}]);
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$provide.decorator('myService', function($delegate) {
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return function(val) {
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log.push('myDecoratedService:' + val);
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var origVal = $delegate('decInput');
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return 'dec+' + origVal;
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};
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});
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}]);
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var out = injector.get('myService')('input');
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log.push(out);
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expect(log.join('; ')).
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toBe('myDecoratedService:input; myService:decInput,dependency1; dec+origReturn');
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});
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it('should allow for decorators to be injectable', function() {
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injector = createInjector([function($provide) {
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$provide.value('dep1', 'dependency1');
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$provide.factory('myService', function() {
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return function(val) {
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log.push('myService:' + val);
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return 'origReturn';
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}
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});
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$provide.decorator('myService', function($delegate, dep1) {
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return function(val) {
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log.push('myDecoratedService:' + val + ',' + dep1);
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var origVal = $delegate('decInput');
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return 'dec+' + origVal;
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};
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});
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}]);
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var out = injector.get('myService')('input');
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log.push(out);
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expect(log.join('; ')).
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toBe('myDecoratedService:input,dependency1; myService:decInput; dec+origReturn');
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});
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});
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});
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describe('error handling', function() {
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it('should handle wrong argument type', function() {
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expect(function() {
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createInjector([
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{}
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], {});
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}).toThrow("Argument 'module' is not a function, got Object");
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});
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it('should handle exceptions', function() {
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expect(function() {
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createInjector([function() {
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throw 'MyError';
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}], {});
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}).toThrow('MyError');
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});
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it('should decorate the missing service error with module name', function() {
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angular.module('TestModule', [], function($injector) {});
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expect(function() {
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createInjector(['TestModule']);
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}).toThrow('Unknown provider: $injector from TestModule');
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});
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it('should decorate the missing service error with module function', function() {
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function myModule($injector){}
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expect(function() {
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createInjector([myModule]);
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}).toThrow('Unknown provider: $injector from ' + myModule);
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});
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it('should decorate the missing service error with module array function', function() {
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function myModule($injector){}
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expect(function() {
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createInjector([['$injector', myModule]]);
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}).toThrow('Unknown provider: $injector from ' + myModule);
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});
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it('should throw error when trying to inject oneself', function() {
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expect(function() {
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createInjector([function($provide){
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$provide.factory('service', function(service){});
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return function(service) {}
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}])
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}).toThrow('Circular dependency: service');
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});
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it('should throw error when trying to inject circular dependency', function() {
|
|
expect(function() {
|
|
createInjector([function($provide){
|
|
$provide.factory('a', function(b){});
|
|
$provide.factory('b', function(a){});
|
|
return function(a) {}
|
|
}])
|
|
}).toThrow('Circular dependency: b <- a');
|
|
});
|
|
});
|
|
});
|
|
|
|
|
|
describe('retrieval', function() {
|
|
var instance,
|
|
$injector,
|
|
$provide;
|
|
|
|
beforeEach(function() {
|
|
$injector = createInjector([ ['$provide', function(provide) {
|
|
($provide = provide).value('instance', instance = {name:'angular'});
|
|
}]]);
|
|
});
|
|
|
|
|
|
it('should retrieve by name and cache instance', function() {
|
|
expect(instance).toEqual({name: 'angular'});
|
|
expect($injector.get('instance')).toBe(instance);
|
|
expect($injector.get('instance')).toBe(instance);
|
|
});
|
|
|
|
|
|
it('should call functions and infer arguments', function() {
|
|
expect($injector.invoke(function(instance) { return instance; })).toBe(instance);
|
|
expect($injector.invoke(function(instance) { return instance; })).toBe(instance);
|
|
});
|
|
});
|
|
|
|
|
|
describe('method invoking', function() {
|
|
var $injector;
|
|
|
|
beforeEach(function() {
|
|
$injector = createInjector([ function($provide) {
|
|
$provide.value('book', 'moby');
|
|
$provide.value('author', 'melville');
|
|
}]);
|
|
});
|
|
|
|
|
|
it('should invoke method', function() {
|
|
expect($injector.invoke(function(book, author) {
|
|
return author + ':' + book;
|
|
})).toEqual('melville:moby');
|
|
expect($injector.invoke(function(book, author) {
|
|
expect(this).toEqual($injector);
|
|
return author + ':' + book;}, $injector)).toEqual('melville:moby');
|
|
});
|
|
|
|
|
|
it('should invoke method with locals', function() {
|
|
expect($injector.invoke(function(book, author) {
|
|
return author + ':' + book;
|
|
})).toEqual('melville:moby');
|
|
expect($injector.invoke(
|
|
function(book, author, chapter) {
|
|
expect(this).toEqual($injector);
|
|
return author + ':' + book + '-' + chapter;
|
|
}, $injector, {author:'m', chapter:'ch1'})).toEqual('m:moby-ch1');
|
|
});
|
|
|
|
|
|
it('should invoke method which is annotated', function() {
|
|
expect($injector.invoke(extend(function(b, a) {
|
|
return a + ':' + b
|
|
}, {$inject:['book', 'author']}))).toEqual('melville:moby');
|
|
expect($injector.invoke(extend(function(b, a) {
|
|
expect(this).toEqual($injector);
|
|
return a + ':' + b;
|
|
}, {$inject:['book', 'author']}), $injector)).toEqual('melville:moby');
|
|
});
|
|
|
|
|
|
it('should invoke method which is an array of annotation', function() {
|
|
expect($injector.invoke(function(book, author) {
|
|
return author + ':' + book;
|
|
})).toEqual('melville:moby');
|
|
expect($injector.invoke(function(book, author) {
|
|
expect(this).toEqual($injector);
|
|
return author + ':' + book;
|
|
}, $injector)).toEqual('melville:moby');
|
|
});
|
|
|
|
|
|
it('should throw usefull error on wrong argument type]', function() {
|
|
expect(function() {
|
|
$injector.invoke({});
|
|
}).toThrow("Argument 'fn' is not a function, got Object");
|
|
});
|
|
});
|
|
|
|
|
|
describe('service instantiation', function() {
|
|
var $injector;
|
|
|
|
beforeEach(function() {
|
|
$injector = createInjector([ function($provide) {
|
|
$provide.value('book', 'moby');
|
|
$provide.value('author', 'melville');
|
|
}]);
|
|
});
|
|
|
|
|
|
function Type(book, author) {
|
|
this.book = book;
|
|
this.author = author;
|
|
}
|
|
Type.prototype.title = function() {
|
|
return this.author + ': ' + this.book;
|
|
};
|
|
|
|
|
|
it('should instantiate object and preserve constructor property and be instanceof', function() {
|
|
var t = $injector.instantiate(Type);
|
|
expect(t.book).toEqual('moby');
|
|
expect(t.author).toEqual('melville');
|
|
expect(t.title()).toEqual('melville: moby');
|
|
expect(t instanceof Type).toBe(true);
|
|
});
|
|
|
|
|
|
it('should instantiate object and preserve constructor property and be instanceof ' +
|
|
'with the array annotated type', function() {
|
|
var t = $injector.instantiate(['book', 'author', Type]);
|
|
expect(t.book).toEqual('moby');
|
|
expect(t.author).toEqual('melville');
|
|
expect(t.title()).toEqual('melville: moby');
|
|
expect(t instanceof Type).toBe(true);
|
|
});
|
|
|
|
|
|
it('should allow constructor to return different object', function() {
|
|
var obj = {};
|
|
var Class = function() {
|
|
return obj;
|
|
};
|
|
|
|
expect($injector.instantiate(Class)).toBe(obj);
|
|
});
|
|
|
|
|
|
it('should handle constructor exception', function() {
|
|
expect(function() {
|
|
$injector.instantiate(function() { throw 'MyError'; });
|
|
}).toThrow('MyError');
|
|
});
|
|
|
|
|
|
it('should return instance if constructor returns non-object value', function() {
|
|
var A = function() {
|
|
return 10;
|
|
};
|
|
|
|
var B = function() {
|
|
return 'some-string';
|
|
};
|
|
|
|
var C = function() {
|
|
return undefined;
|
|
};
|
|
|
|
expect($injector.instantiate(A) instanceof A).toBe(true);
|
|
expect($injector.instantiate(B) instanceof B).toBe(true);
|
|
expect($injector.instantiate(C) instanceof C).toBe(true);
|
|
});
|
|
});
|
|
|
|
describe('protection modes', function() {
|
|
it('should prevent provider lookup in app', function() {
|
|
var $injector = createInjector([function($provide) {
|
|
$provide.value('name', 'angular');
|
|
}]);
|
|
expect(function() {
|
|
$injector.get('nameProvider');
|
|
}).toThrow("Unknown provider: nameProviderProvider <- nameProvider");
|
|
});
|
|
|
|
|
|
it('should prevent provider configuration in app', function() {
|
|
var $injector = createInjector([]);
|
|
expect(function() {
|
|
$injector.get('$provide').value('a', 'b');
|
|
}).toThrow("Unknown provider: $provideProvider <- $provide");
|
|
});
|
|
|
|
|
|
it('should prevent instance lookup in module', function() {
|
|
function instanceLookupInModule(name) { throw Error('FAIL'); }
|
|
expect(function() {
|
|
createInjector([function($provide) {
|
|
$provide.value('name', 'angular')
|
|
}, instanceLookupInModule]);
|
|
}).toThrow('Unknown provider: name from ' + String(instanceLookupInModule));
|
|
});
|
|
});
|
|
});
|