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JS Bin// source http://jsbin.com/muqigog
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"> | |
<meta name="viewport" content="width=device-width"> | |
<title>JS Bin</title> | |
</head> | |
<body> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/expect/1.20.2/expect.min.js"></script> | |
<script src="https://wzrd.in/standalone/deep-freeze@latest"></script> | |
<script id="jsbin-javascript"> | |
console.clear() | |
const todos = (state = [], action) => { | |
switch (action.type) { | |
case 'ADD_TODO': | |
return [ | |
...state, | |
{ | |
id: action.id, | |
text: action.text, | |
completed: false | |
} | |
] | |
case 'TOGGLE_TODO': | |
// return [ | |
// ...state.slice(0, action.id), | |
// { | |
// ...state[action.id], | |
// completed: !state[action.id].completed | |
// }, | |
// ...state.slice(action.id + 1) | |
// ] | |
return state.map(todo => { | |
if (todo.id !== action.id) { | |
return todo; | |
} | |
return { | |
...todo, | |
completed: !todo.completed | |
} | |
}) | |
default: | |
return state | |
} | |
} | |
const testAddTodo = () => { | |
const stateBefore = []; | |
const action = { | |
type: 'ADD_TODO', | |
id: 0, | |
text: 'Learn Redux' | |
} | |
const stateAfter = [{ | |
id: 0, | |
text: 'Learn Redux', | |
completed: false | |
}] | |
deepFreeze(stateBefore) | |
deepFreeze(action) | |
expect( | |
todos(stateBefore, action) | |
).toEqual(stateAfter) | |
} | |
const testToggleTodo = () => { | |
const stateBefore = [ | |
{ | |
id: 0, | |
text: 'Learn Redux', | |
completed: false | |
}, | |
{ | |
id: 1, | |
text: 'Learn ES7', | |
completed: false | |
} | |
] | |
const action = { | |
type: 'TOGGLE_TODO', | |
id: 1 | |
} | |
const stateAfter = [ | |
{ | |
id: 0, | |
text: 'Learn Redux', | |
completed: false | |
}, | |
{ | |
id: 1, | |
text: 'Learn ES7', | |
completed: true | |
} | |
] | |
deepFreeze(stateBefore) | |
deepFreeze(action) | |
expect( | |
todos(stateBefore, action) | |
).toEqual(stateAfter) | |
} | |
testAddTodo() | |
testToggleTodo() | |
console.log('All test passed.') | |
</script> | |
<script id="jsbin-source-javascript" type="text/javascript">console.clear() | |
const todos = (state = [], action) => { | |
switch (action.type) { | |
case 'ADD_TODO': | |
return [ | |
...state, | |
{ | |
id: action.id, | |
text: action.text, | |
completed: false | |
} | |
] | |
case 'TOGGLE_TODO': | |
// return [ | |
// ...state.slice(0, action.id), | |
// { | |
// ...state[action.id], | |
// completed: !state[action.id].completed | |
// }, | |
// ...state.slice(action.id + 1) | |
// ] | |
return state.map(todo => { | |
if (todo.id !== action.id) { | |
return todo; | |
} | |
return { | |
...todo, | |
completed: !todo.completed | |
} | |
}) | |
default: | |
return state | |
} | |
} | |
const testAddTodo = () => { | |
const stateBefore = []; | |
const action = { | |
type: 'ADD_TODO', | |
id: 0, | |
text: 'Learn Redux' | |
} | |
const stateAfter = [{ | |
id: 0, | |
text: 'Learn Redux', | |
completed: false | |
}] | |
deepFreeze(stateBefore) | |
deepFreeze(action) | |
expect( | |
todos(stateBefore, action) | |
).toEqual(stateAfter) | |
} | |
const testToggleTodo = () => { | |
const stateBefore = [ | |
{ | |
id: 0, | |
text: 'Learn Redux', | |
completed: false | |
}, | |
{ | |
id: 1, | |
text: 'Learn ES7', | |
completed: false | |
} | |
] | |
const action = { | |
type: 'TOGGLE_TODO', | |
id: 1 | |
} | |
const stateAfter = [ | |
{ | |
id: 0, | |
text: 'Learn Redux', | |
completed: false | |
}, | |
{ | |
id: 1, | |
text: 'Learn ES7', | |
completed: true | |
} | |
] | |
deepFreeze(stateBefore) | |
deepFreeze(action) | |
expect( | |
todos(stateBefore, action) | |
).toEqual(stateAfter) | |
} | |
testAddTodo() | |
testToggleTodo() | |
console.log('All test passed.')</script></body> | |
</html> |
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console.clear() | |
const todos = (state = [], action) => { | |
switch (action.type) { | |
case 'ADD_TODO': | |
return [ | |
...state, | |
{ | |
id: action.id, | |
text: action.text, | |
completed: false | |
} | |
] | |
case 'TOGGLE_TODO': | |
// return [ | |
// ...state.slice(0, action.id), | |
// { | |
// ...state[action.id], | |
// completed: !state[action.id].completed | |
// }, | |
// ...state.slice(action.id + 1) | |
// ] | |
return state.map(todo => { | |
if (todo.id !== action.id) { | |
return todo; | |
} | |
return { | |
...todo, | |
completed: !todo.completed | |
} | |
}) | |
default: | |
return state | |
} | |
} | |
const testAddTodo = () => { | |
const stateBefore = []; | |
const action = { | |
type: 'ADD_TODO', | |
id: 0, | |
text: 'Learn Redux' | |
} | |
const stateAfter = [{ | |
id: 0, | |
text: 'Learn Redux', | |
completed: false | |
}] | |
deepFreeze(stateBefore) | |
deepFreeze(action) | |
expect( | |
todos(stateBefore, action) | |
).toEqual(stateAfter) | |
} | |
const testToggleTodo = () => { | |
const stateBefore = [ | |
{ | |
id: 0, | |
text: 'Learn Redux', | |
completed: false | |
}, | |
{ | |
id: 1, | |
text: 'Learn ES7', | |
completed: false | |
} | |
] | |
const action = { | |
type: 'TOGGLE_TODO', | |
id: 1 | |
} | |
const stateAfter = [ | |
{ | |
id: 0, | |
text: 'Learn Redux', | |
completed: false | |
}, | |
{ | |
id: 1, | |
text: 'Learn ES7', | |
completed: true | |
} | |
] | |
deepFreeze(stateBefore) | |
deepFreeze(action) | |
expect( | |
todos(stateBefore, action) | |
).toEqual(stateAfter) | |
} | |
testAddTodo() | |
testToggleTodo() | |
console.log('All test passed.') |
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