Created
August 21, 2010 15:29
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localStorageの挙動と簡単なラッパー
http://jxck.hatenablog.com/entry/20100821/1282412125
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module('localStorage',{ | |
setup: function() { | |
localStorage.clear(); | |
}, | |
teardown: function() { | |
localStorage.clear(); | |
} | |
}); | |
test('localStorage exists and has methods',function(){ | |
ok(localStorage,'localStorage'); | |
same(localStorage.length,0,'initial localStorage.length is 0'); | |
ok(localStorage.key,'localStorage.key'); | |
same(typeof localStorage.key,'function','localStorage.key is function'); | |
ok(localStorage.getItem,'localStorage.getItem'); | |
same(typeof localStorage.getItem,'function','localStorage.getItem is function'); | |
ok(localStorage.setItem,'localStorage.setItem'); | |
same(typeof localStorage.setItem,'function','localStorage.setItem is function'); | |
ok(localStorage.removeItem,'localStorage.removeItem'); | |
same(typeof localStorage.removeItem,'function','localStorage.removeItem is function'); | |
ok(localStorage.clear,'localStorage.clear'); | |
same(typeof localStorage.clear,'function','localStorage.clear is function'); | |
}); | |
test('Manipulate by method access',function(){ | |
localStorage.setItem('key','value'); | |
same(localStorage.length,1,'created'); | |
same(localStorage.getItem('key'),'value','same'); | |
localStorage.removeItem('key'); | |
same(localStorage.length,0,'removed'); | |
//if access inexistent property is null | |
same(localStorage.getItem('hoge'),null); | |
same(localStorage.removeItem('hoge'),undefined); | |
}); | |
test('Manipulate by property access',function(){ | |
localStorage.key='value'; | |
same(localStorage.length,1,'created'); | |
same(localStorage.key,'value','same'); | |
delete localStorage.key; | |
same(localStorage.length,0,'deleted'); | |
//if access inexistent property is null | |
same(localStorage.hoge,null); | |
same(delete localStorage.hoge,true); | |
}); | |
test('Manipulate by name(key) access',function(){ | |
localStorage['key']='value'; | |
same(localStorage.length,1,'created'); | |
same(localStorage['key'],'value','same'); | |
delete localStorage['key']; | |
same(localStorage.length,0,'deleted'); | |
//if access inexistent property is null | |
same(localStorage['hoge'],null); | |
same(delete localStorage['hoge'],true); | |
}); | |
test('clear all data in localStorage',function(){ | |
localStorage.key1 = 'value1'; | |
localStorage.key2 = 'value2'; | |
localStorage.key3 = 'value3'; | |
same(localStorage.length,3,'many data exists'); | |
localStorage.clear(); | |
same(localStorage.length,0,'localStorage.clear() delete all data of localStorage'); | |
}); | |
test('Manipulate all data by key(index) roop',function(){ | |
localStorage.key1 = 'value1'; | |
localStorage.key2 = 'value2'; | |
localStorage.key3 = 'value3'; | |
same(localStorage.length,3,'many data exists'); | |
for (var i=0; i<localStorage.length; i++){ | |
var tmp = localStorage.key(i); | |
ok(tmp,tmp); | |
} | |
}); | |
test('Manipulate all data by hash[index] roop',function(){ | |
localStorage.key1 = 'value1'; | |
localStorage.key2 = 'value2'; | |
localStorage.key3 = 'value3'; | |
same(localStorage.length,3,'many data exists'); | |
for (var i=0; i<localStorage.length; i++){ | |
var tmp = localStorage[i]; | |
ok(tmp,tmp); | |
} | |
}); | |
test('Manipulate all data by $.each()',function(){ | |
localStorage.key1 = 'value1'; | |
localStorage.key2 = 'value2'; | |
localStorage.key3 = 'value3'; | |
same(localStorage.length,3,'many data exists'); | |
$.each(localStorage,function(i,val){ | |
ok(val,val); | |
}); | |
}); | |
test('Manipulate all data by iteration roop',function(){ | |
localStorage.key1 = 'value1'; | |
localStorage.key2 = 'value2'; | |
localStorage.key3 = 'value3'; | |
same(localStorage.length,3,'many data exists'); | |
for (var key in localStorage){ | |
ok(key,key); | |
ok(localStorage[key],localStorage[key]); | |
} | |
}); | |
test('add JSON Object',function(){ | |
var obj = { | |
"key" : "value", | |
"arr" : ["a",1,true], | |
"nest" : { "nested" : {"nested" : "value" }} | |
}; | |
localStorage.setItem('obj', obj); | |
var value = localStorage.getItem('obj'); | |
ok(value,value); | |
same(value,obj); | |
}); | |
test('add JSON String',function(){ | |
var obj = { | |
"key" : "value", | |
"arr" : ["a",1,true], | |
"nest" : { "nested" : {"nested" : "value" }} | |
}; | |
var str = JSON.stringify(obj); | |
localStorage.setItem('str',str); | |
var value = localStorage.getItem('str'); | |
ok(value,value); | |
same(value,str); | |
value = JSON.parse(value); | |
same(value,obj); | |
}); | |
//////////////////////////////////// | |
//wrapper library of set-get-each | |
//////////////////////////////////// | |
var db ={ | |
set : function(key, obj){ | |
localStorage.setItem(key, JSON.stringify(obj)); | |
}, | |
get : function(key){ | |
return JSON.parse(localStorage.getItem(key)); | |
}, | |
each : function(fun){ | |
try{ | |
for (var i=0; i<localStorage.length; i++){ | |
var k = localStorage.key(i); | |
fun(k,db.get(k)); | |
} | |
}catch(e){ | |
for (var key in localStorage){ | |
if(key === 'key') continue; | |
fun(key,db.get(key)); | |
} | |
} | |
} | |
}; | |
module('my db library',{ | |
setup: function() { | |
localStorage.clear(); | |
}, | |
teardown: function() { | |
localStorage.clear(); | |
} | |
}); | |
test('set(key, obj) and get(key)',function(){ | |
var obj = { | |
"key" : "value", | |
"arr" : ["a",1,true], | |
"nest" : { "nested" : {"nested" : "value" }} | |
}; | |
db.set('obj',obj); | |
var value = db.get('obj'); | |
same(value, obj); | |
}); | |
test('each(fun)',function(){ | |
db.set('key1','value1'); | |
db.set('key2','value2'); | |
db.set('key3','value3'); | |
same(localStorage.length,3,'many data exists'); | |
db.each(function(k,v){ | |
ok(k,k); | |
ok(v,v); | |
}); | |
}); |
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