store: tests!

package-lock.json

@@ -1831,7 +1831,6 @@
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@@ -2577,7 +2576,6 @@
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@@ -5050,905 +5048,6 @@
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-            }
-          }
-        },
-        "string-width": {
-          "version": "1.0.2",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "code-point-at": "1.1.0",
-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
-          }
-        },
-        "string_decoder": {
-          "version": "1.0.1",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "safe-buffer": "5.0.1"
-          }
-        },
-        "stringstream": {
-          "version": "0.0.5",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "strip-ansi": {
-          "version": "3.0.1",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "ansi-regex": "2.1.1"
-          }
-        },
-        "strip-json-comments": {
-          "version": "2.0.1",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "tar": {
-          "version": "2.2.1",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "block-stream": "0.0.9",
-            "fstream": "1.0.11",
-            "inherits": "2.0.3"
-          }
-        },
-        "tar-pack": {
-          "version": "3.4.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "debug": "2.6.8",
-            "fstream": "1.0.11",
-            "fstream-ignore": "1.0.5",
-            "once": "1.4.0",
-            "readable-stream": "2.2.9",
-            "rimraf": "2.6.1",
-            "tar": "2.2.1",
-            "uid-number": "0.0.6"
-          }
-        },
-        "tough-cookie": {
-          "version": "2.3.2",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "punycode": "1.4.1"
-          }
-        },
-        "tunnel-agent": {
-          "version": "0.6.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "safe-buffer": "5.0.1"
-          }
-        },
-        "tweetnacl": {
-          "version": "0.14.5",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "uid-number": {
-          "version": "0.0.6",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "util-deprecate": {
-          "version": "1.0.2",
-          "bundled": true,
-          "dev": true
-        },
-        "uuid": {
-          "version": "3.0.1",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "verror": {
-          "version": "1.3.6",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "extsprintf": "1.0.2"
-          }
-        },
-        "wide-align": {
-          "version": "1.1.2",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "string-width": "1.0.2"
-          }
-        },
-        "wrappy": {
-          "version": "1.0.2",
-          "bundled": true,
-          "dev": true
-        }
-      }
-    },
     "fstream": {
       "version": "1.0.11",
       "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.11.tgz",
@@ -8874,6 +7973,12 @@
       "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
       "dev": true
     },
+    "lodash-es": {
+      "version": "4.17.4",
+      "resolved": "https://registry.npmjs.org/lodash-es/-/lodash-es-4.17.4.tgz",
+      "integrity": "sha1-3MHXVS4VCgZABzupyzHXDwMpUOc=",
+      "dev": true
+    },
     "lodash._arraycopy": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/lodash._arraycopy/-/lodash._arraycopy-3.0.0.tgz",
@@ -10468,7 +9573,6 @@
           "requires": {
             "anymatch": "1.3.0",
             "async-each": "1.0.1",
-            "fsevents": "1.1.2",
             "glob-parent": "2.0.0",
             "inherits": "2.0.3",
             "is-binary-path": "1.0.1",
@@ -11913,6 +11017,18 @@
         }
       }
     },
+    "redux": {
+      "version": "3.7.2",
+      "resolved": "https://registry.npmjs.org/redux/-/redux-3.7.2.tgz",
+      "integrity": "sha512-pNqnf9q1hI5HHZRBkj3bAngGZW/JMCmexDlOxw4XagXY2o1327nHH54LoTjiPJ0gizoqPDRqWyX/00g0hD6w+A==",
+      "dev": true,
+      "requires": {
+        "lodash": "4.17.4",
+        "lodash-es": "4.17.4",
+        "loose-envify": "1.3.1",
+        "symbol-observable": "1.0.4"
+      }
+    },
     "regenerate": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/regenerate/-/regenerate-1.3.2.tgz",
@@ -13287,6 +12403,12 @@
         "whet.extend": "0.9.9"
       }
     },
+    "symbol-observable": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/symbol-observable/-/symbol-observable-1.0.4.tgz",
+      "integrity": "sha1-Kb9hXUqnEhvdiYsi1LP5vE4qoD0=",
+      "dev": true
+    },
     "symbol-tree": {
       "version": "3.2.2",
       "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.2.tgz",

package.json

@@ -89,15 +89,16 @@
     "onchange": "3.2.1",
     "postcss": "5.1.0",
     "pre-commit": "1.1.3",
+    "redux": "^3.7.2",
     "sass": "0.5.0",
     "tape": "^4.8.0",
     "tinyify": "^1.0.0",
     "uppy-server": "0.0.7",
     "watchify": "3.7.0",
-    "webdriverio": "^4.9.5",
     "wdio-mocha-framework": "^0.5.11",
     "wdio-sauce-service": "^0.4.4",
-    "wdio-static-server-service": "^1.0.1"
+    "wdio-static-server-service": "^1.0.1",
+    "webdriverio": "^4.9.5"
   },
   "dependencies": {
     "cuid": "^1.3.8",

src/store/DefaultStore.js

@@ -1,7 +1,7 @@
 /**
  * Default store that keeps state in a simple object.
  */
-module.exports = class DefaultStore {
+class DefaultStore {
   constructor () {
     this.state = {}
     this.callbacks = []
@@ -36,3 +36,7 @@ module.exports = class DefaultStore {
     })
   }
 }
+
+module.exports = function defaultStore () {
+  return new DefaultStore()
+}

src/store/DefaultStore.test.js

@@ -0,0 +1,47 @@
+const DefaultStore = require('./DefaultStore')
+
+describe('DefaultStore', () => {
+  it('can be created with or without new', () => {
+    let store = DefaultStore()
+    expect(typeof store).toBe('object')
+    store = new DefaultStore()
+    expect(typeof store).toBe('object')
+  })
+
+  it('merges in state using `setState`', () => {
+    const store = DefaultStore()
+    expect(store.getState()).toEqual({})
+
+    store.setState({
+      a: 1,
+      b: 2
+    })
+    expect(store.getState()).toEqual({ a: 1, b: 2 })
+
+    store.setState({ b: 3 })
+    expect(store.getState()).toEqual({ a: 1, b: 3 })
+  })
+
+  it('notifies subscriptions when state changes', () => {
+    let expected = []
+    let calls = 0
+    function listener (prevState, nextState, patch) {
+      calls++
+      expect([ prevState, nextState, patch ]).toEqual(expected)
+    }
+
+    const store = DefaultStore()
+    store.subscribe(listener)
+
+    expected = [{}, { a: 1, b: 2 }, { a: 1, b: 2 }]
+    store.setState({
+      a: 1,
+      b: 2
+    })
+
+    expected = [{ a: 1, b: 2 }, { a: 1, b: 3 }, { b: 3 }]
+    store.setState({ b: 3 })
+
+    expect(calls).toBe(2)
+  })
+})

src/store/ReduxStore.js

@@ -20,6 +20,9 @@ class ReduxStore {
     this._store = opts.store
     this._id = opts.id || cuid()
     this._selector = opts.selector || defaultSelector(this._id)
+
+    // Initialise the `uppy[id]` state key.
+    this.setState({})
   }
 
   setState (patch) {

src/store/ReduxStore.test.js

@@ -0,0 +1,115 @@
+const ReduxStore = require('./ReduxStore')
+const Redux = require('redux')
+
+describe('ReduxStore', () => {
+  function createStore (reducers = {}) {
+    const reducer = Redux.combineReducers(Object.assign({}, reducers, {
+      uppy: ReduxStore.reducer
+    }))
+    return Redux.createStore(reducer)
+  }
+
+  it('can be created with or without new', () => {
+    const r = createStore()
+    let store = ReduxStore({ store: r })
+    expect(typeof store).toBe('object')
+    store = new ReduxStore({ store: r })
+    expect(typeof store).toBe('object')
+  })
+
+  it('merges in state using `setState`', () => {
+    const r = createStore()
+    const store = ReduxStore({ store: r })
+    expect(store.getState()).toEqual({})
+
+    store.setState({
+      a: 1,
+      b: 2
+    })
+    expect(store.getState()).toEqual({ a: 1, b: 2 })
+
+    store.setState({ b: 3 })
+    expect(store.getState()).toEqual({ a: 1, b: 3 })
+  })
+
+  it('notifies subscriptions when state changes', () => {
+    let expected = []
+    let calls = 0
+    function listener (prevState, nextState, patch) {
+      calls++
+      expect([ prevState, nextState, patch ]).toEqual(expected)
+    }
+
+    const r = createStore()
+    const store = ReduxStore({ store: r })
+    store.subscribe(listener)
+
+    expected = [{}, { a: 1, b: 2 }, { a: 1, b: 2 }]
+    store.setState({
+      a: 1,
+      b: 2
+    })
+
+    expected = [{ a: 1, b: 2 }, { a: 1, b: 3 }, { b: 3 }]
+    store.setState({ b: 3 })
+
+    expect(calls).toBe(2)
+  })
+
+  it('fires `subscribe` if state is modified externally (eg redux devtools)', () => {
+    const reducer = Redux.combineReducers({ uppy: ReduxStore.reducer })
+    const r = Redux.createStore((state, action) => {
+      // Add a `SET` action that can change Uppy state without going through the Uppy reducer or action creator.
+      // Emulates Redux Devtools.
+      if (action.type === 'SET') return action.payload
+      return reducer(state, action)
+    })
+
+    let expected = []
+    let calls = 0
+    function listener (prevState, nextState, patch) {
+      calls++
+      expect([ prevState, nextState, patch ]).toEqual(expected)
+    }
+
+    const store = ReduxStore({ store: r })
+    store.subscribe(listener)
+
+    expected = [{}, { a: 1 }, { a: 1 }]
+    store.setState({ a: 1 })
+
+    expected = [{ a: 1 }, { b: 2 }, { b: 2 }]
+    // redux-devtools's `JUMP_TO_STATE` is similar to this.
+    r.dispatch({
+      type: 'SET',
+      payload: {
+        uppy: {
+          [store._id]: { b: 2 }
+        }
+      }
+    })
+
+    expect(calls).toBe(2)
+  })
+
+  it('can mount in a custom state key', () => {
+    const reducer = Redux.combineReducers({
+      hello: ReduxStore.reducer
+    })
+    const r = Redux.createStore(reducer)
+    const store = ReduxStore({
+      store: r,
+      id: 'world',
+      selector: state => state.hello.world
+    })
+    store.setState({ a: 1 })
+
+    expect(r.getState()).toEqual({
+      hello: {
+        world: {
+          a: 1
+        }
+      }
+    })
+  })
+})