1 files changed, 110 insertions, 0 deletions
diff --git a/test/unit/app/controllers/preferences-controller-test.js b/test/unit/app/controllers/preferences-controller-test.js
index 9b2c846bd..2c261be90 100644
--- a/test/unit/app/controllers/preferences-controller-test.js
+++ b/test/unit/app/controllers/preferences-controller-test.js
@@ -1,6 +1,7 @@
 const assert = require('assert')
 const ObservableStore = require('obs-store')
 const PreferencesController = require('../../../../app/scripts/controllers/preferences')
+const sinon = require('sinon')
 
 describe('preferences controller', function () {
   let preferencesController
@@ -339,5 +340,114 @@ describe('preferences controller', function () {
       assert.deepEqual(tokensSecond, initialTokensSecond, 'tokens equal for same network')
     })
   })
+
+  describe('on watchAsset', function () {
+    var stubNext, stubEnd, stubHandleWatchAssetERC20, asy, req, res
+    const sandbox = sinon.createSandbox()
+
+    beforeEach(() => {
+      req = {params: {}}
+      res = {}
+      asy = {next: () => {}, end: () => {}}
+      stubNext = sandbox.stub(asy, 'next')
+      stubEnd = sandbox.stub(asy, 'end').returns(0)
+      stubHandleWatchAssetERC20 = sandbox.stub(preferencesController, '_handleWatchAssetERC20')
+    })
+    after(() => {
+      sandbox.restore()
+    })
+
+    it('shouldn not do anything if method not corresponds', async function () {
+      const asy = {next: () => {}, end: () => {}}
+      var stubNext = sandbox.stub(asy, 'next')
+      var stubEnd = sandbox.stub(asy, 'end').returns(0)
+      req.method = 'metamask'
+      await preferencesController.requestWatchAsset(req, res, asy.next, asy.end)
+      sandbox.assert.notCalled(stubEnd)
+      sandbox.assert.called(stubNext)
+    })
+    it('should do something if method is supported', async function () {
+      const asy = {next: () => {}, end: () => {}}
+      var stubNext = sandbox.stub(asy, 'next')
+      var stubEnd = sandbox.stub(asy, 'end').returns(0)
+      req.method = 'metamask_watchAsset'
+      req.params.type = 'someasset'
+      await preferencesController.requestWatchAsset(req, res, asy.next, asy.end)
+      sandbox.assert.called(stubEnd)
+      sandbox.assert.notCalled(stubNext)
+    })
+    it('should through error if method is supported but asset type is not', async function () {
+      req.method = 'metamask_watchAsset'
+      req.params.type = 'someasset'
+      await preferencesController.requestWatchAsset(req, res, asy.next, asy.end)
+      sandbox.assert.called(stubEnd)
+      sandbox.assert.notCalled(stubHandleWatchAssetERC20)
+      sandbox.assert.notCalled(stubNext)
+      assert.deepEqual(res, {})
+    })
+    it('should trigger handle add asset if type supported', async function () {
+      const asy = {next: () => {}, end: () => {}}
+      req.method = 'metamask_watchAsset'
+      req.params.type = 'ERC20'
+      await preferencesController.requestWatchAsset(req, res, asy.next, asy.end)
+      sandbox.assert.called(stubHandleWatchAssetERC20)
+    })
+  })
+
+  describe('on watchAsset of type ERC20', function () {
+    var req
+
+    const sandbox = sinon.createSandbox()
+    beforeEach(() => {
+      req = {params: {type: 'ERC20'}}
+    })
+    after(() => {
+      sandbox.restore()
+    })
+
+    it('should add suggested token', async function () {
+      const address = '0xabcdef1234567'
+      const symbol = 'ABBR'
+      const decimals = 5
+      const image = 'someimage'
+      req.params.options = { address, symbol, decimals, image }
+
+      sandbox.stub(preferencesController, '_validateERC20AssetParams').returns(true)
+      preferencesController.showWatchAssetUi = async () => {}
+
+      await preferencesController._handleWatchAssetERC20(req.params.options)
+      const suggested = preferencesController.getSuggestedTokens()
+      assert.equal(Object.keys(suggested).length, 1, `one token added ${Object.keys(suggested)}`)
+
+      assert.equal(suggested[address].address, address, 'set address correctly')
+      assert.equal(suggested[address].symbol, symbol, 'set symbol correctly')
+      assert.equal(suggested[address].decimals, decimals, 'set decimals correctly')
+      assert.equal(suggested[address].image, image, 'set image correctly')
+    })
+
+    it('should add token correctly if user confirms', async function () {
+      const address = '0xabcdef1234567'
+      const symbol = 'ABBR'
+      const decimals = 5
+      const image = 'someimage'
+      req.params.options = { address, symbol, decimals, image }
+
+      sandbox.stub(preferencesController, '_validateERC20AssetParams').returns(true)
+      preferencesController.showWatchAssetUi = async () => {
+        await preferencesController.addToken(address, symbol, decimals, image)
+      }
+
+      await preferencesController._handleWatchAssetERC20(req.params.options)
+      const tokens = preferencesController.getTokens()
+      assert.equal(tokens.length, 1, `one token added`)
+      const added = tokens[0]
+      assert.equal(added.address, address, 'set address correctly')
+      assert.equal(added.symbol, symbol, 'set symbol correctly')
+      assert.equal(added.decimals, decimals, 'set decimals correctly')
+
+      const assetImages = preferencesController.getAssetImages()
+      assert.ok(assetImages[address], `set image correctly`)
+    })
+  })
 })