diff --git a/.babelrc b/.babelrc
index f0daa17..686acbb 100644
--- a/.babelrc
+++ b/.babelrc
@@ -4,5 +4,10 @@
   }]],
   "presets": [
     "@babel/preset-env"
-  ]
+  ],
+  "env": {
+    "test": {
+      "plugins": ["@babel/plugin-transform-runtime"]
+    }
+  }
 }
diff --git a/__mocks__/cognito-fake.js b/__mocks__/cognito-fake.js
new file mode 100644
index 0000000..747aeb9
--- /dev/null
+++ b/__mocks__/cognito-fake.js
@@ -0,0 +1,18 @@
+export default class CognitoFake {
+  listUsers() {
+    return {
+      promise: async () => {
+        return new Promise(resolve => {
+          return resolve(
+            {
+              Users: [
+                { Username: 'user1' },
+                { Username: 'user2' }
+              ]
+            }
+          )
+        })
+      }
+    }
+  }
+}
diff --git a/__mocks__/cognito-pagination-fake.js b/__mocks__/cognito-pagination-fake.js
new file mode 100644
index 0000000..1e1bc80
--- /dev/null
+++ b/__mocks__/cognito-pagination-fake.js
@@ -0,0 +1,33 @@
+export default class CognitoPaginationFake {
+  constructor() {
+    this.calledAlready = false
+  }
+
+  listUsers() {
+    return {
+      promise: async () => {
+        return new Promise(resolve => {
+          if (this.calledAlready) {
+            return resolve(
+              {
+                Users: [
+                  { Username: 'user2' }
+                ]
+              }
+            )
+          } else {
+            this.calledAlready= true
+            return resolve(
+              {
+                Users: [
+                  { Username: 'user1' }
+                ],
+                PaginationToken: 'token'
+              }
+            )
+          }
+        })
+      }
+    }
+  }
+}
diff --git a/__tests__/ExportUsers.test.js b/__tests__/ExportUsers.test.js
index 2a6d1fd..e9b2d84 100644
--- a/__tests__/ExportUsers.test.js
+++ b/__tests__/ExportUsers.test.js
@@ -1,5 +1,51 @@
+import AWS from 'aws-sdk'
+import ExportUsers from '../src/ExportUsers'
+import CognitoFake from '../__mocks__/cognito-fake'
+import CognitoPaginationFake from '../__mocks__/cognito-pagination-fake'
+
 describe('ExportUsers', () => {
-  test('dummy test', () => {
-    expect(true).toEqual(true)
+  const exporter = new ExportUsers()
+
+  describe('constructor()', () => {
+    it('sets cognito', () => {
+      expect(exporter.cognito).toBeInstanceOf(AWS.CognitoIdentityServiceProvider)
+    })
+  })
+
+  describe('export()', () => {
+    const logSpy = jest.spyOn(console, 'log')
+
+    describe('without pagination', () => {
+      beforeAll(() => {
+        exporter.cognito = new CognitoFake()
+      })
+
+      it('logs a message', async () => {
+        await exporter.export()
+        expect(logSpy).toHaveBeenCalledWith('Users exported from Cognito')
+      })
+
+      it('returns a list of users', async () => {
+        const userList = await exporter.export()
+        expect(userList).toEqual([{"Username":"user1"},{"Username":"user2"}])
+      })
+    })
+
+    describe('with pagination', () => {
+      // NOTE: Using beforeEach instead of beforeAll because the pagination fake stores the state of whether listUsers() has been called already
+      beforeEach(() => {
+        exporter.cognito = new CognitoPaginationFake()
+      })
+
+      it('logs a message', async () => {
+        await exporter.export()
+        expect(logSpy).toHaveBeenCalledWith('Users exported from Cognito')
+      })
+
+      it('returns a list of users', async () => {
+        const userList = await exporter.export()
+        expect(userList).toEqual([{"Username":"user1"},{"Username":"user2"}])
+      })
+    })
   })
 })
diff --git a/package-lock.json b/package-lock.json
index a9aa5b1..f1fe39a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -570,6 +570,18 @@
         "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
+    "@babel/plugin-transform-runtime": {
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-runtime/-/plugin-transform-runtime-7.4.4.tgz",
+      "integrity": "sha512-aMVojEjPszvau3NRg+TIH14ynZLvPewH4xhlCW1w6A3rkxTS1m4uwzRclYR9oS+rl/dr+kT+pzbfHuAWP/lc7Q==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-module-imports": "^7.0.0",
+        "@babel/helper-plugin-utils": "^7.0.0",
+        "resolve": "^1.8.1",
+        "semver": "^5.5.1"
+      }
+    },
     "@babel/plugin-transform-shorthand-properties": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/@babel/plugin-transform-shorthand-properties/-/plugin-transform-shorthand-properties-7.2.0.tgz",
diff --git a/package.json b/package.json
index d6b1063..bbb457a 100644
--- a/package.json
+++ b/package.json
@@ -38,6 +38,7 @@
     }
   ],
   "devDependencies": {
+    "@babel/plugin-transform-runtime": "^7.4.4",
     "babel-eslint": "^10.0.1",
     "eslint": "^5.16.0",
     "eslint-plugin-import": "^2.17.2",
diff --git a/src/ExportUsers.js b/src/ExportUsers.js
index b24aa3e..ff284cd 100644
--- a/src/ExportUsers.js
+++ b/src/ExportUsers.js
@@ -13,11 +13,12 @@ export default class ExportUsers {
 
     const paginationCalls = async (exportedUsers = []) => {
       const { Users = [], PaginationToken } = await this.cognito.listUsers(params).promise()
+
       const combinedUsers = exportedUsers.concat(Users)
 
       if (PaginationToken) {
         params.PaginationToken = PaginationToken
-        await paginationCalls(combinedUsers)
+        return await paginationCalls(combinedUsers)
       }
 
       return combinedUsers