2 files changed, 292 insertions, 0 deletions
diff --git a/ui/app/ducks/send/send-duck.test.js b/ui/app/ducks/send/send-duck.test.js
new file mode 100644
index 000000000..92c8dffd8
--- /dev/null
+++ b/ui/app/ducks/send/send-duck.test.js
@@ -0,0 +1,186 @@
+import assert from 'assert'
+
+import SendReducer, {
+  openToDropdown,
+  closeToDropdown,
+  updateSendErrors,
+  showGasButtonGroup,
+  hideGasButtonGroup,
+  updateSendWarnings,
+} from './send.duck.js'
+
+describe('Send Duck', () => {
+  const mockState = {
+    send: {
+      mockProp: 123,
+    },
+  }
+  const initState = {
+    fromDropdownOpen: false,
+    toDropdownOpen: false,
+    errors: {},
+    gasButtonGroupShown: true,
+    warnings: {},
+  }
+  const OPEN_FROM_DROPDOWN = 'metamask/send/OPEN_FROM_DROPDOWN'
+  const CLOSE_FROM_DROPDOWN = 'metamask/send/CLOSE_FROM_DROPDOWN'
+  const OPEN_TO_DROPDOWN = 'metamask/send/OPEN_TO_DROPDOWN'
+  const CLOSE_TO_DROPDOWN = 'metamask/send/CLOSE_TO_DROPDOWN'
+  const UPDATE_SEND_ERRORS = 'metamask/send/UPDATE_SEND_ERRORS'
+  const UPDATE_SEND_WARNINGS = 'metamask/send/UPDATE_SEND_WARNINGS'
+  const RESET_SEND_STATE = 'metamask/send/RESET_SEND_STATE'
+  const SHOW_GAS_BUTTON_GROUP = 'metamask/send/SHOW_GAS_BUTTON_GROUP'
+  const HIDE_GAS_BUTTON_GROUP = 'metamask/send/HIDE_GAS_BUTTON_GROUP'
+
+  describe('SendReducer()', () => {
+    it('should initialize state', () => {
+      assert.deepEqual(
+        SendReducer({}),
+        initState
+      )
+    })
+
+    it('should return state unchanged if it does not match a dispatched actions type', () => {
+      assert.deepEqual(
+        SendReducer(mockState, {
+          type: 'someOtherAction',
+          value: 'someValue',
+        }),
+        Object.assign({}, mockState.send)
+      )
+    })
+
+    it('should set fromDropdownOpen to true when receiving a OPEN_FROM_DROPDOWN action', () => {
+      assert.deepEqual(
+        SendReducer(mockState, {
+          type: OPEN_FROM_DROPDOWN,
+        }),
+        Object.assign({fromDropdownOpen: true}, mockState.send)
+      )
+    })
+
+    it('should return a new object (and not just modify the existing state object)', () => {
+      assert.deepEqual(SendReducer(mockState), mockState.send)
+      assert.notEqual(SendReducer(mockState), mockState.send)
+    })
+
+    it('should set fromDropdownOpen to false when receiving a CLOSE_FROM_DROPDOWN action', () => {
+      assert.deepEqual(
+        SendReducer(mockState, {
+          type: CLOSE_FROM_DROPDOWN,
+        }),
+        Object.assign({fromDropdownOpen: false}, mockState.send)
+      )
+    })
+
+    it('should set toDropdownOpen to true when receiving a OPEN_TO_DROPDOWN action', () => {
+      assert.deepEqual(
+        SendReducer(mockState, {
+          type: OPEN_TO_DROPDOWN,
+        }),
+        Object.assign({toDropdownOpen: true}, mockState.send)
+      )
+    })
+
+    it('should set toDropdownOpen to false when receiving a CLOSE_TO_DROPDOWN action', () => {
+      assert.deepEqual(
+        SendReducer(mockState, {
+          type: CLOSE_TO_DROPDOWN,
+        }),
+        Object.assign({toDropdownOpen: false}, mockState.send)
+      )
+    })
+
+    it('should set gasButtonGroupShown to true when receiving a SHOW_GAS_BUTTON_GROUP action', () => {
+      assert.deepEqual(
+        SendReducer(Object.assign({}, mockState, { gasButtonGroupShown: false }), {
+          type: SHOW_GAS_BUTTON_GROUP,
+        }),
+        Object.assign({gasButtonGroupShown: true}, mockState.send)
+      )
+    })
+
+    it('should set gasButtonGroupShown to false when receiving a HIDE_GAS_BUTTON_GROUP action', () => {
+      assert.deepEqual(
+        SendReducer(mockState, {
+          type: HIDE_GAS_BUTTON_GROUP,
+        }),
+        Object.assign({gasButtonGroupShown: false}, mockState.send)
+      )
+    })
+
+    it('should extend send.errors with the value of a UPDATE_SEND_ERRORS action', () => {
+      const modifiedMockState = Object.assign({}, mockState, {
+        send: {
+          errors: {
+            someError: false,
+          },
+        },
+      })
+      assert.deepEqual(
+        SendReducer(modifiedMockState, {
+          type: UPDATE_SEND_ERRORS,
+          value: { someOtherError: true },
+        }),
+        Object.assign({}, modifiedMockState.send, {
+          errors: {
+            someError: false,
+            someOtherError: true,
+          },
+        })
+      )
+    })
+
+    it('should return the initial state in response to a RESET_SEND_STATE action', () => {
+      assert.deepEqual(
+        SendReducer(mockState, {
+          type: RESET_SEND_STATE,
+        }),
+        Object.assign({}, initState)
+      )
+    })
+  })
+
+  describe('openToDropdown', () => {
+    assert.deepEqual(
+      openToDropdown(),
+      { type: OPEN_TO_DROPDOWN }
+    )
+  })
+
+  describe('closeToDropdown', () => {
+    assert.deepEqual(
+      closeToDropdown(),
+      { type: CLOSE_TO_DROPDOWN }
+    )
+  })
+
+  describe('showGasButtonGroup', () => {
+    assert.deepEqual(
+      showGasButtonGroup(),
+      { type: SHOW_GAS_BUTTON_GROUP }
+    )
+  })
+
+  describe('hideGasButtonGroup', () => {
+    assert.deepEqual(
+      hideGasButtonGroup(),
+      { type: HIDE_GAS_BUTTON_GROUP }
+    )
+  })
+
+  describe('updateSendErrors', () => {
+    assert.deepEqual(
+      updateSendErrors('mockErrorObject'),
+      { type: UPDATE_SEND_ERRORS, value: 'mockErrorObject' }
+    )
+  })
+
+  describe('updateSendWarnings', () => {
+    assert.deepEqual(
+      updateSendWarnings('mockWarningObject'),
+      { type: UPDATE_SEND_WARNINGS, value: 'mockWarningObject' }
+    )
+  })
+
+})
diff --git a/ui/app/ducks/send/send.duck.js b/ui/app/ducks/send/send.duck.js
new file mode 100644
index 000000000..90e92140b
--- /dev/null
+++ b/ui/app/ducks/send/send.duck.js
@@ -0,0 +1,106 @@
+import extend from 'xtend'
+
+// Actions
+const OPEN_FROM_DROPDOWN = 'metamask/send/OPEN_FROM_DROPDOWN'
+const CLOSE_FROM_DROPDOWN = 'metamask/send/CLOSE_FROM_DROPDOWN'
+const OPEN_TO_DROPDOWN = 'metamask/send/OPEN_TO_DROPDOWN'
+const CLOSE_TO_DROPDOWN = 'metamask/send/CLOSE_TO_DROPDOWN'
+const UPDATE_SEND_ERRORS = 'metamask/send/UPDATE_SEND_ERRORS'
+const UPDATE_SEND_WARNINGS = 'metamask/send/UPDATE_SEND_WARNINGS'
+const RESET_SEND_STATE = 'metamask/send/RESET_SEND_STATE'
+const SHOW_GAS_BUTTON_GROUP = 'metamask/send/SHOW_GAS_BUTTON_GROUP'
+const HIDE_GAS_BUTTON_GROUP = 'metamask/send/HIDE_GAS_BUTTON_GROUP'
+
+// TODO: determine if this approach to initState is consistent with conventional ducks pattern
+const initState = {
+  fromDropdownOpen: false,
+  toDropdownOpen: false,
+  gasButtonGroupShown: true,
+  errors: {},
+  warnings: {},
+}
+
+// Reducer
+export default function reducer ({ send: sendState = initState }, action = {}) {
+  const newState = extend({}, sendState)
+
+  switch (action.type) {
+    case OPEN_FROM_DROPDOWN:
+      return extend(newState, {
+        fromDropdownOpen: true,
+      })
+    case CLOSE_FROM_DROPDOWN:
+      return extend(newState, {
+        fromDropdownOpen: false,
+      })
+    case OPEN_TO_DROPDOWN:
+      return extend(newState, {
+        toDropdownOpen: true,
+      })
+    case CLOSE_TO_DROPDOWN:
+      return extend(newState, {
+        toDropdownOpen: false,
+      })
+    case UPDATE_SEND_ERRORS:
+      return extend(newState, {
+        errors: {
+          ...newState.errors,
+          ...action.value,
+        },
+      })
+    case UPDATE_SEND_WARNINGS:
+      return extend(newState, {
+        warnings: {
+          ...newState.warnings,
+          ...action.value,
+        },
+      })
+    case SHOW_GAS_BUTTON_GROUP:
+      return extend(newState, {
+        gasButtonGroupShown: true,
+      })
+    case HIDE_GAS_BUTTON_GROUP:
+      return extend(newState, {
+        gasButtonGroupShown: false,
+      })
+    case RESET_SEND_STATE:
+      return extend({}, initState)
+    default:
+      return newState
+  }
+}
+
+// Action Creators
+export function openToDropdown () {
+  return { type: OPEN_TO_DROPDOWN }
+}
+
+export function closeToDropdown () {
+  return { type: CLOSE_TO_DROPDOWN }
+}
+
+export function showGasButtonGroup () {
+  return { type: SHOW_GAS_BUTTON_GROUP }
+}
+
+export function hideGasButtonGroup () {
+  return { type: HIDE_GAS_BUTTON_GROUP }
+}
+
+export function updateSendErrors (errorObject) {
+  return {
+    type: UPDATE_SEND_ERRORS,
+    value: errorObject,
+  }
+}
+
+export function updateSendWarnings (warningObject) {
+  return {
+    type: UPDATE_SEND_WARNINGS,
+    value: warningObject,
+  }
+}
+
+export function resetSendState () {
+  return { type: RESET_SEND_STATE }
+}