diff --git a/.gitignore b/.gitignore
index 8c09524..9ede137 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 *.pyc
-*.swp
\ No newline at end of file
+*.swp
+.cache/
\ No newline at end of file
diff --git a/checkin_test.py b/checkin_test.py
new file mode 100644
index 0000000..d53b7ff
--- /dev/null
+++ b/checkin_test.py
@@ -0,0 +1,17 @@
+import pytest
+import checkin
+import requests_mock
+from datetime import datetime 
+from pytz import timezone
+
+@requests_mock.Mocker()
+def test_checkin(m):
+    m.register_uri('GET', '/api/mobile-misc/v1/mobile-misc/page/view-reservation/XXXX?first-name=John&last-name=Smith', text=open('fixtures/view-reservation.json', 'r').read())
+    m.register_uri('GET', '/api/mobile-air-operations/v1/mobile-air-operations/page/check-in/XXXX?first-name=John&last-name=Smith', text=open('fixtures/checkin-get.json', 'r').read())
+    m.register_uri('POST', '/api/mobile-air-operations/v1/mobile-air-operations/page/check-in', text=open('fixtures/checkin-post.json', 'r').read())
+    assert checkin.auto_checkin('XXXX', 'John', 'Smith') == None
+
+def test_timzone_localization():
+    tz = timezone('America/Los_Angeles')
+    date = tz.localize(datetime.strptime('2018-01-01 13:00', '%Y-%m-%d %H:%M'))
+    assert date.strftime('%z') == '-0800'
diff --git a/fixtures/checkin-get.json b/fixtures/checkin-get.json
new file mode 100644
index 0000000..ee7460c
--- /dev/null
+++ b/fixtures/checkin-get.json
@@ -0,0 +1,64 @@
+{
+    "checkInSessionToken": "",
+    "checkInViewReservationPage": {
+        "_links": {
+            "checkIn": {
+                "body": {
+                    "checkInSessionToken": "",
+                    "firstName": "John",
+                    "lastName": "Smith",
+                    "recordLocator": "XXXX"
+                },
+                "href": "/v1/mobile-air-operations/page/check-in",
+                "method": "POST"
+            },
+            "travelDocuments": null
+        },
+        "_v1_infoNeededToCheckin": {
+            "body": {
+                "names": [
+                    {
+                        "firstName": "JOHN",
+                        "lastName": "SMITH"
+                    }
+                ]
+            },
+            "href": "/v1/mobile/reservations/record-locator/XXXX/boarding-passes",
+            "method": "POST"
+        },
+        "cards": [
+            {
+                "arrivalAirport": "LAX",
+                "arrivalTime": "15:10",
+                "dates": {
+                    "first": "2018-01-01",
+                    "second": null
+                },
+                "departureAirport": "SFO",
+                "departureDate": "2018-01-01",
+                "departureTime": "13:45",
+                "destinationDescription": "Los Angeles",
+                "flights": [
+                    {
+                        "departureDate": "Jan 01",
+                        "destinationAirportCode": "LAX",
+                        "destinationStationName": "Los Angeles",
+                        "flightNumber": "1234",
+                        "hasWifi": true,
+                        "originAirportCode": "SFO"
+                    }
+                ],
+                "hazmatCheckInDisclaimer": "By tapping 'Check in' you acknowledge that you understand the hazardous materials restrictions and penalties.",
+                "travelTime": "1h 25m"
+            }
+        ],
+        "hazmatText": "Federal law forbids the carriage of hazardous materials such as aerosols, fireworks, lithium batteries and flammable liquids aboard the aircraft in your checked or carryon baggage. E-cigarettes are not permitted in checked baggage and must be transported in carryon baggage only.",
+        "pnr": {
+            "confirmationNumber": "XXXX",
+            "passengers": [
+                "John Smith"
+            ]
+        }
+    },
+    "prefillPassengerAPISDocuments": null
+}
\ No newline at end of file
diff --git a/fixtures/checkin-post.json b/fixtures/checkin-post.json
new file mode 100644
index 0000000..e8b0422
--- /dev/null
+++ b/fixtures/checkin-post.json
@@ -0,0 +1,45 @@
+{
+    "checkInConfirmationPage": {
+        "_links": {
+            "boardingPasses": {
+                "body": {
+                    "checkInSessionToken": "XXXX",
+                    "firstName": "JOHN",
+                    "lastName": "SMITH",
+                    "recordLocator": "XXXX"
+                },
+                "href": "/v1/mobile-air-operations/page/check-in/view-boarding-pass",
+                "method": "POST"
+            }
+        },
+        "_v1_infoNeededToViewBoardingPasses": {
+            "href": "/v1/mobile/record-locator/XXXX/mobile-boarding-passes",
+            "method": "GET",
+            "query": {
+                "first-name": "JOHN",
+                "last-name": "SMITH"
+            }
+        },
+        "flights": [
+            {
+                "boundIndex": 0,
+                "flightNumber": "1234",
+                "gate": null,
+                "hasWifi": true,
+                "passengers": [
+                    {
+                        "boardingGroup": "A",
+                        "boardingPosition": "31",
+                        "checkedIn": true,
+                        "confirmationNumber": "XXXX",
+                        "hasPrecheck": true,
+                        "mobileBoardingPassEligible": true,
+                        "mobileBoardingPassIneligibilityErrorCode": "",
+                        "name": "John Smith"
+                    }
+                ],
+                "travelTime": "1h 25m"
+            }
+        ]
+    }
+}
\ No newline at end of file
diff --git a/fixtures/view-reservation.json b/fixtures/view-reservation.json
new file mode 100644
index 0000000..666517f
--- /dev/null
+++ b/fixtures/view-reservation.json
@@ -0,0 +1,114 @@
+{
+    "viewReservationViewPage": {
+        "_links": {
+            "cancel": null,
+            "change": null,
+            "checkIn": null,
+            "checkInSessionToken": null,
+            "passportEmergencyContacts": null,
+            "viewBoardingPass": null,
+            "viewBoardingPositions": null,
+            "viewStandbyList": null
+        },
+        "_v1_infoNeededToAddCompanion": null,
+        "_v1_infoNeededToCancel": {
+            "href": "/v1/mobile/reservations/record-locator/XXXX",
+            "method": "GET",
+            "query": {
+                "action": "CANCEL",
+                "first-name": "John",
+                "last-name": "Smith"
+            }
+        },
+        "_v1_infoNeededToChange": {
+            "href": "/v1/mobile/reservations/record-locator/XXXX",
+            "method": "GET",
+            "query": {
+                "action": "CHANGE",
+                "first-name": "John",
+                "last-name": "Smith"
+            }
+        },
+        "bounds": [
+            {
+                "arrivalAirport": {
+                    "code": "LAX",
+                    "country": null,
+                    "name": "Los Angeles",
+                    "state": "CA"
+                },
+                "arrivalStatus": null,
+                "arrivalStatusType": null,
+                "arrivalTime": "15:10",
+                "boundType": "DEPARTING",
+                "departureAirport": {
+                    "code": "SFO",
+                    "country": null,
+                    "name": "San Francisco",
+                    "state": "CA"
+                },
+                "departureDate": "2018-01-01",
+                "departureStatus": null,
+                "departureStatusType": null,
+                "departureTime": "13:45",
+                "fareType": "Companion",
+                "flights": [
+                    {
+                        "number": "1234",
+                        "wifiOnBoard": true
+                    }
+                ],
+                "isNextDayArrival": false,
+                "passengerTypeCounts": {
+                    "adult": 1,
+                    "senior": 0
+                },
+                "stops": [],
+                "travelTime": "1h 25m"
+            }
+        ],
+        "checkInIneligibilityReason": null,
+        "companion": null,
+        "confirmationNumber": "XXXX",
+        "dates": {
+            "first": "2018-01-01",
+            "second": null
+        },
+        "destinationAirport": {
+            "code": "LAX",
+            "country": null,
+            "name": "Los Angeles",
+            "state": "CA"
+        },
+        "destinationDescription": "Los Angeles",
+        "hasAnyCancelledFlights": false,
+        "hasUnaccompaniedMinor": false,
+        "isCheckInEligible": false,
+        "isCheckedIn": false,
+        "isDynamicWaiver": false,
+        "isInternational": false,
+        "isNonRevPnr": false,
+        "originAirport": {
+            "code": "SFO",
+            "country": null,
+            "name": "San Francisco",
+            "state": "CA"
+        },
+        "pageHeader": "SFO - LAX",
+        "passengers": [
+            {
+                "accountNumber": "111111111",
+                "checkInIneligibilityReason": null,
+                "hasAnyEarlyBird": false,
+                "hasCompletePassportInfo": false,
+                "isCheckInEligible": false,
+                "isCheckedIn": false,
+                "isUnaccompaniedMinor": false,
+                "name": "John Smith",
+                "passengerReference": "2"
+            }
+        ],
+        "shouldShowAddEarlyBirdButton": false,
+        "standbyFlight": null
+    }
+}
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index c677cde..3868297 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,9 @@
 datetime
 docopts
 geopy
+pytest
 python-dateutil
 pytz
 requests
+requests_mock
 tzlocal