Testing posting a WTForm into Flask, to be stored in a SQLAlchemy database

I am creating some unit-tests to ensure the functionality of my application is maintained when running on other machines (this project will be going to an examiner). However I am having some issues with testing the registration of a user.

Here are some of the relevant parts of the program:

test_flask.py

class ApplicationTest(unittest.TestCase):
  def setUp(self):
    app.config["SERVER_NAME"] = "TESTING"
    app.config["TESTING"] = True
    app.config["WTF_CSRF_ENABLED"] = False
    app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///" + os.path.join(basedir, "tests/test.db")
    self.app_context = app.app_context()
    self.app_context.push()
    self.app = app.test_client()
    db.create_all()

def test_Register(self):
    response = self.app.post("/register", data=dict(
        name="test er",
        username="tester",
        email="test@er.com",
        password="test",
        confirm="test",
        phone_number="07905848677",
        address="1 Fleet Street",
        town="Billericay",
        county="Essex",
        postcode="CM12 0LE",
        date_of_birth="16/08/77",
        gender="M"), follow_redirects=True)
    print(response.status_code)
    print(response.data)
    self.assertTrue(response.status_code == 302)

---

forms.py

class RegistrationForm(Form):
name = StringField("name")
username = StringField("Username")
email = StringField("Email")
password = PasswordField("Password")
confirm = PasswordField("Confirm Password")
phone_number = IntegerField("Phone Number")
address = StringField("Address")
town = StringField("Town")
county = StringField("County")
postcode = StringField("Postcode")
date_of_birth = DateField("Birthday", format="%d/%m/%Y")
gender = RadioField("Gender", choices=[("M", "Male"), ("F", "Female")])

---

views.py

@app.route("/register", methods=["GET", "POST"])
def register():
    registration = forms.RegistrationForm()
    if registration.validate_on_submit():
        password_table = password.hash_password(registration.confirm.data)  # Generates a secure hashed password.
        registration.confirm.data = None  # Removes the users password from the memory.
        new = models.Runner(username=registration.username.data,
                        name=registration.name.data,
                        phone_number=registration.phone_number.data,
                        address=registration.address.data,
                        town=registration.town.data,
                        county=registration.county.data,
                        postcode=registration.postcode.data,
                        gender=registration.gender.data,
                        date_of_birth=registration.date_of_birth.data,
                        hashed_password=password_table[0],
                        salt=password_table[1],
                        first_login=True)
        db.session.add(new)
        db.session.commit()
        flash("Account created, please login!", "success")
        return redirect(url_for("login"))
    else:
        return render_template("pages/register.html", form=registration)

---

models.py

class Runner(db.Model):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String, unique=True)
name = db.Column(db.String)
phone_number = db.Column(db.Integer)
address = db.Column(db.String)
town = db.Column(db.String)
county = db.Column(db.String)
postcode = db.Column(db.String)
gender = db.Column(db.String)
date_of_birth = db.Column(db.String)
hashed_password = db.Column(db.String)
salt = db.Column(db.String)
first_login = db.Column(db.Boolean)

---

When I run the test_Register, it completes successfully however I receive a HTTP 200 response, instead of a HTTP 302 and a redirect to the login page. What am I doing wrong? (Ignore any indentation errors by the way, they are correct, but copy pasting the code in messed some of it up).