diff --git a/README.md b/README.md
index 029a8e4..9547b6d 100644
--- a/README.md
+++ b/README.md
@@ -47,5 +47,9 @@ Websocket -> `localhost:3001`
 
 Para rodar os testes da parte client:
 
-`yarn test`
+`yarn test:client`
+
+Para rodar os testes da api:
+
+`yarn test:api`
 
diff --git a/api/channel.js b/api/channel.js
index 3f4518a..5dfe91e 100644
--- a/api/channel.js
+++ b/api/channel.js
@@ -1,12 +1,12 @@
 /* global require module */
-var uuidv4 = require('uuid/v4')
+var uuid = require('uuid')
 
 module.exports = () => {
   const channels = {}
 
   const createChannel = (socket, io, name) => {
     let channel = {
-      id: uuidv4(),
+      id: uuid.v4(),
       name: name,
       msgs: []
     }
diff --git a/api/channel.test.js b/api/channel.test.js
new file mode 100644
index 0000000..5f68f97
--- /dev/null
+++ b/api/channel.test.js
@@ -0,0 +1,99 @@
+/* global describe it require expect beforeEach spyOn */
+const uuid = require('uuid')
+const sinon = require('sinon')
+const channelManager = require('./channel')()
+
+let ioFunc = () => {
+  const emit = () => {return this}
+  const to = () => {return this}
+  return {emit, to}
+}
+let io = ioFunc()
+
+let socketFunc = () => {
+  const emit = () => {return this}
+  const join = () => {return this}
+  const rooms = {}
+  return {emit, join, rooms}
+}
+let socket = socketFunc()
+
+describe('createChannel method', () => {
+  it('should insert channel in the channels object', () => {
+    sinon.stub(uuid, 'v4').returns('1-2-3-4')
+    channelManager.createChannel(socket, io, 'my channel')
+    expect(channelManager.channels).toEqual({
+      '1-2-3-4': {
+        msgs: [],
+        joined: true,
+        id: '1-2-3-4',
+        name: 'my channel'
+      }
+    })
+  })
+
+  it('should join room', () => {
+    spyOn(socket, 'emit')
+    spyOn(socket, 'join')
+    spyOn(io, 'emit')
+    channelManager.createChannel(socket, io, 'my channel')
+    expect(socket.emit).toHaveBeenCalledWith('joined channel', {id: '1-2-3-4', joined: true, msgs: [], name: 'my channel'})
+    expect(socket.join).toHaveBeenCalledWith('1-2-3-4')
+    expect(io.emit).toHaveBeenCalledWith('channels', channelManager.channels)
+  })
+})
+
+// describe('sendMessage method', () => {
+//   it('should not send message if room doesnt exist', () => {
+//     spyOn(io, 'to')
+//     spyOn(io, 'emit')
+//     socket.rooms[1] = true
+//     channelManager.sendMessage(socket, io, {channelID: '1', msg: 'Hello!'})
+//     expect(io.to).toBeCalledWith('1')
+//     expect(io.emit).toBeCalledWith('message', {channelID: '1', msg: 'Hello!'})
+//     // channels[channelID].msgs.push(msg)
+//   })
+// })
+
+// describe('joinChannel method', () => {
+// })
+
+// describe('leaveChannel method', () => {
+// })
+
+describe('getChannel method', () => {
+  it('should emit got channel', () => {
+    spyOn(socket, 'emit')
+    channelManager.channels['123'] = {
+      id: 1-2-3-4,
+      joined: false,
+      msgs: [],
+      name: "my channel"
+    }
+    channelManager.getChannel(socket, '123')
+    expect(socket.emit).toHaveBeenCalledWith('got channel', {
+      id: 1-2-3-4,
+      joined: false,
+      msgs: [],
+      name: "my channel"
+    })
+  })
+
+  it('should emit got channel with joined true', () => {
+    spyOn(socket, 'emit')
+    channelManager.channels['123'] = {
+      id: 1-2-3-4,
+      joined: false,
+      msgs: [],
+      name: "my channel"
+    }
+    socket.rooms['123'] = true
+    channelManager.getChannel(socket, '123')
+    expect(socket.emit).toHaveBeenCalledWith('got channel', {
+      id: 1-2-3-4,
+      joined: true,
+      msgs: [],
+      name: "my channel"
+    })
+  })
+})
\ No newline at end of file
diff --git a/package.json b/package.json
index 9ed7528..5f0bcba 100644
--- a/package.json
+++ b/package.json
@@ -15,9 +15,10 @@
   "scripts": {
     "start": "react-scripts start | node api/server.js",
     "build": "react-scripts build",
-    "test": "react-scripts test --env=jsdom",
+    "test:client": "react-scripts test --env=jsdom",
     "eject": "react-scripts eject",
     "sass": "sass --watch src/styles/scss:src/styles/css",
+    "test:api": "jest api/*test.js",
     "postinstall": "yarn build"
   },
   "devDependencies": {
diff --git a/yarn.lock b/yarn.lock
index e12807b..0ad5a52 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -78,6 +78,22 @@
     lodash "^4.2.0"
     to-fast-properties "^2.0.0"
 
+"@sinonjs/commons@^1.0.1":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.0.2.tgz#3e0ac737781627b8844257fadc3d803997d0526e"
+  dependencies:
+    type-detect "4.0.8"
+
+"@sinonjs/formatio@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-2.0.0.tgz#84db7e9eb5531df18a8c5e0bfb6e449e55e654b2"
+  dependencies:
+    samsam "1.3.0"
+
+"@sinonjs/samsam@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-2.0.0.tgz#9163742ac35c12d3602dece74317643b35db6a80"
+
 "@types/node@*":
   version "10.9.2"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.9.2.tgz#f0ab8dced5cd6c56b26765e1c0d9e4fdcc9f2a00"
@@ -382,6 +398,10 @@ assert@^1.1.1:
   dependencies:
     util "0.10.3"
 
+assertion-error@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/assertion-error/-/assertion-error-1.1.0.tgz#e60b6b0e8f301bd97e5375215bda406c85118c0b"
+
 assign-symbols@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/assign-symbols/-/assign-symbols-1.0.0.tgz#59667f41fadd4f20ccbc2bb96b8d4f7f78ec0367"
@@ -1281,6 +1301,10 @@ browser-resolve@^1.11.2:
   dependencies:
     resolve "1.1.7"
 
+browser-stdout@1.3.1:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/browser-stdout/-/browser-stdout-1.3.1.tgz#baa559ee14ced73452229bad7326467c61fabd60"
+
 browserify-aes@^1.0.0, browserify-aes@^1.0.4:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/browserify-aes/-/browserify-aes-1.2.0.tgz#326734642f403dabc3003209853bb70ad428ef48"
@@ -1490,6 +1514,17 @@ center-align@^0.1.1:
     align-text "^0.1.3"
     lazy-cache "^1.0.3"
 
+chai@^4.1.2:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/chai/-/chai-4.1.2.tgz#0f64584ba642f0f2ace2806279f4f06ca23ad73c"
+  dependencies:
+    assertion-error "^1.0.1"
+    check-error "^1.0.1"
+    deep-eql "^3.0.0"
+    get-func-name "^2.0.0"
+    pathval "^1.0.0"
+    type-detect "^4.0.0"
+
 chalk@1.1.3, chalk@^1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
@@ -1512,6 +1547,10 @@ chardet@^0.4.0:
   version "0.4.2"
   resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.4.2.tgz#b5473b33dc97c424e5d98dc87d55d4d8a29c8bf2"
 
+check-error@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/check-error/-/check-error-1.0.2.tgz#574d312edd88bb5dd8912e9286dd6c0aed4aac82"
+
 cheerio@^1.0.0-rc.2:
   version "1.0.0-rc.2"
   resolved "https://registry.yarnpkg.com/cheerio/-/cheerio-1.0.0-rc.2.tgz#4b9f53a81b27e4d5dac31c0ffd0cfa03cc6830db"
@@ -1702,6 +1741,10 @@ combined-stream@1.0.6, combined-stream@~1.0.6:
   dependencies:
     delayed-stream "~1.0.0"
 
+commander@2.15.1:
+  version "2.15.1"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
+
 commander@2.17.x, commander@^2.11.0:
   version "2.17.1"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.17.1.tgz#bd77ab7de6de94205ceacc72f1716d29f20a77bf"
@@ -2052,7 +2095,7 @@ debug@2.6.9, debug@^2.1.2, debug@^2.2.0, debug@^2.3.3, debug@^2.6.0, debug@^2.6.
   dependencies:
     ms "2.0.0"
 
-debug@^3.0.1, debug@^3.1.0, debug@~3.1.0:
+debug@3.1.0, debug@^3.0.1, debug@^3.1.0, debug@~3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
   dependencies:
@@ -2066,6 +2109,12 @@ decode-uri-component@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
 
+deep-eql@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/deep-eql/-/deep-eql-3.0.1.tgz#dfc9404400ad1c8fe023e7da1df1c147c4b444df"
+  dependencies:
+    type-detect "^4.0.0"
+
 deep-equal@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/deep-equal/-/deep-equal-1.0.1.tgz#f5d260292b660e084eff4cdbc9f08ad3247448b5"
@@ -2184,7 +2233,7 @@ detect-port-alt@1.1.6:
     address "^1.0.1"
     debug "^2.6.0"
 
-diff@^3.2.0:
+diff@3.5.0, diff@^3.2.0, diff@^3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
 
@@ -3258,6 +3307,10 @@ get-caller-file@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-1.0.3.tgz#f978fa4c90d1dfe7ff2d6beda2a515e713bdcf4a"
 
+get-func-name@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/get-func-name/-/get-func-name-2.0.0.tgz#ead774abee72e20409433a066366023dd6887a41"
+
 get-stdin@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-4.0.1.tgz#b968c6b0a04384324902e8bf1a5df32579a450fe"
@@ -3296,7 +3349,7 @@ glob-parent@^3.1.0:
     is-glob "^3.1.0"
     path-dirname "^1.0.0"
 
-glob@^7.0.3, glob@^7.0.5, glob@^7.1.1, glob@^7.1.2:
+glob@7.1.2, glob@^7.0.3, glob@^7.0.5, glob@^7.1.1, glob@^7.1.2:
   version "7.1.2"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"
   dependencies:
@@ -3380,6 +3433,10 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.6, graceful-fs@^4.1.9:
   version "4.1.11"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
 
+growl@1.10.5:
+  version "1.10.5"
+  resolved "https://registry.yarnpkg.com/growl/-/growl-1.10.5.tgz#f2735dc2283674fa67478b10181059355c369e5e"
+
 growly@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/growly/-/growly-1.3.0.tgz#f10748cbe76af964b7c96c93c6bcc28af120c081"
@@ -3498,7 +3555,7 @@ hash.js@^1.0.0, hash.js@^1.0.3:
     inherits "^2.0.3"
     minimalistic-assert "^1.0.1"
 
-he@1.1.x:
+he@1.1.1, he@1.1.x:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
 
@@ -4541,6 +4598,10 @@ jsx-ast-utils@^2.0.0, jsx-ast-utils@^2.0.1:
   dependencies:
     array-includes "^3.0.3"
 
+just-extend@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/just-extend/-/just-extend-3.0.0.tgz#cee004031eaabf6406da03a7b84e4fe9d78ef288"
+
 killable@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/killable/-/killable-1.0.0.tgz#da8b84bd47de5395878f95d64d02f2449fe05e6b"
@@ -4680,6 +4741,10 @@ lodash.flattendeep@^4.4.0:
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/lodash.flattendeep/-/lodash.flattendeep-4.4.0.tgz#fb030917f86a3134e5bc9bec0d69e0013ddfedb2"
 
+lodash.get@^4.4.2:
+  version "4.4.2"
+  resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
+
 lodash.isequal@^4.5.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.isequal/-/lodash.isequal-4.5.0.tgz#415c4478f2bcc30120c22ce10ed3226f7d3e18e0"
@@ -4713,6 +4778,10 @@ loglevel@^1.4.1:
   version "1.6.1"
   resolved "https://registry.yarnpkg.com/loglevel/-/loglevel-1.6.1.tgz#e0fc95133b6ef276cdc8887cdaf24aa6f156f8fa"
 
+lolex@^2.3.2, lolex@^2.7.1:
+  version "2.7.1"
+  resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.7.1.tgz#e40a8c4d1f14b536aa03e42a537c7adbaf0c20be"
+
 longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
@@ -4913,7 +4982,7 @@ minimatch@3.0.3:
   dependencies:
     brace-expansion "^1.0.0"
 
-minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4:
+minimatch@3.0.4, minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
   dependencies:
@@ -4957,6 +5026,22 @@ mkdirp@0.5.1, mkdirp@0.5.x, mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@~0.5.0, mkdirp@
   dependencies:
     minimist "0.0.8"
 
+mocha@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-5.2.0.tgz#6d8ae508f59167f940f2b5b3c4a612ae50c90ae6"
+  dependencies:
+    browser-stdout "1.3.1"
+    commander "2.15.1"
+    debug "3.1.0"
+    diff "3.5.0"
+    escape-string-regexp "1.0.5"
+    glob "7.1.2"
+    growl "1.10.5"
+    he "1.1.1"
+    minimatch "3.0.4"
+    mkdirp "0.5.1"
+    supports-color "5.4.0"
+
 moo@^0.4.3:
   version "0.4.3"
   resolved "https://registry.yarnpkg.com/moo/-/moo-0.4.3.tgz#3f847a26f31cf625a956a87f2b10fbc013bfd10e"
@@ -5042,6 +5127,16 @@ nice-try@^1.0.4:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
 
+nise@^1.4.2:
+  version "1.4.4"
+  resolved "https://registry.yarnpkg.com/nise/-/nise-1.4.4.tgz#b8d9dd35334c99e514b75e46fcc38e358caecdd0"
+  dependencies:
+    "@sinonjs/formatio" "^2.0.0"
+    just-extend "^3.0.0"
+    lolex "^2.3.2"
+    path-to-regexp "^1.7.0"
+    text-encoding "^0.6.4"
+
 no-case@^2.2.0:
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/no-case/-/no-case-2.3.2.tgz#60b813396be39b3f1288a4c1ed5d1e7d28b464ac"
@@ -5518,7 +5613,7 @@ path-to-regexp@0.1.7:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-0.1.7.tgz#df604178005f522f15eb4490e7247a1bfaa67f8c"
 
-path-to-regexp@^1.0.1:
+path-to-regexp@^1.0.1, path-to-regexp@^1.7.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-1.7.0.tgz#59fde0f435badacba103a84e9d3bc64e96b9937d"
   dependencies:
@@ -5538,6 +5633,10 @@ path-type@^2.0.0:
   dependencies:
     pify "^2.0.0"
 
+pathval@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/pathval/-/pathval-1.1.0.tgz#b942e6d4bde653005ef6b71361def8727d0645e0"
+
 pbkdf2@^3.0.3:
   version "3.0.16"
   resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.0.16.tgz#7404208ec6b01b62d85bf83853a8064f8d9c2a5c"
@@ -6545,6 +6644,10 @@ safe-regex@^1.1.0:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
 
+samsam@1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/samsam/-/samsam-1.3.0.tgz#8d1d9350e25622da30de3e44ba692b5221ab7c50"
+
 sane@~1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/sane/-/sane-1.6.0.tgz#9610c452307a135d29c1fdfe2547034180c46775"
@@ -6708,6 +6811,20 @@ signal-exit@^3.0.0, signal-exit@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
 
+sinon@^6.1.5:
+  version "6.1.5"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-6.1.5.tgz#41451502d43cd5ffb9d051fbf507952400e81d09"
+  dependencies:
+    "@sinonjs/commons" "^1.0.1"
+    "@sinonjs/formatio" "^2.0.0"
+    "@sinonjs/samsam" "^2.0.0"
+    diff "^3.5.0"
+    lodash.get "^4.4.2"
+    lolex "^2.7.1"
+    nise "^1.4.2"
+    supports-color "^5.4.0"
+    type-detect "^4.0.8"
+
 slash@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/slash/-/slash-1.0.0.tgz#c41f2f6c39fc16d1cd17ad4b5d896114ae470d55"
@@ -7029,6 +7146,12 @@ style-loader@0.19.0:
     loader-utils "^1.0.2"
     schema-utils "^0.3.0"
 
+supports-color@5.4.0:
+  version "5.4.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.4.0.tgz#1c6b337402c2137605efe19f10fec390f6faab54"
+  dependencies:
+    has-flag "^3.0.0"
+
 supports-color@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-2.0.0.tgz#535d045ce6b6363fa40117084629995e9df324c7"
@@ -7148,6 +7271,10 @@ test-exclude@^4.2.1:
     read-pkg-up "^1.0.1"
     require-main-filename "^1.0.1"
 
+text-encoding@^0.6.4:
+  version "0.6.4"
+  resolved "https://registry.yarnpkg.com/text-encoding/-/text-encoding-0.6.4.tgz#e399a982257a276dae428bb92845cb71bdc26d19"
+
 text-table@0.2.0, text-table@^0.2.0, text-table@~0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
@@ -7269,6 +7396,10 @@ type-check@~0.3.2:
   dependencies:
     prelude-ls "~1.1.2"
 
+type-detect@4.0.8, type-detect@^4.0.0, type-detect@^4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
+
 type-is@~1.6.15, type-is@~1.6.16:
   version "1.6.16"
   resolved "https://registry.yarnpkg.com/type-is/-/type-is-1.6.16.tgz#f89ce341541c672b25ee7ae3c73dee3b2be50194"