Add test package for socketio form submission

app/test/__init__.py

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+from flask import Blueprint
+
+
+test = Blueprint('test', __name__)
+from . import events, views

app/test/events.py

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+from app import logger, socketio
+from flask_login import login_required
+from werkzeug.datastructures import FileStorage
+from werkzeug.utils import secure_filename
+from .forms import TestForm
+import io
+
+
+@socketio.on('submit-test-form')
+@login_required
+def recv_test_form(data):
+    filename = secure_filename(data['file']['name'])
+    stream = io.BytesIO(data['file']['bytes'])
+    file = FileStorage(stream=stream, filename=filename)
+    data['file'] = file
+    test_form = TestForm(data=data)
+    if test_form.validate():
+        logger.warning('test_form is ok!')
+        socketio.emit('submit-test-form', {'status': 'success',
+                                           'msg': 'test_form is ok!'})
+    else:
+        logger.warning('test_form is not ok!')
+        socketio.emit('submit-test-form', {'status': 'error',
+                                           'msg': test_form.errors})

app/test/forms.py

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+from flask_wtf import FlaskForm
+from flask_wtf.file import FileAllowed, FileField, FileRequired
+from wtforms import StringField, SubmitField
+from wtforms.validators import DataRequired, Length
+
+
+class TestForm(FlaskForm):
+    description = StringField('Description',
+                              validators=[DataRequired(), Length(1, 255)])
+    file = FileField('File', validators=[FileAllowed(['txt'], 'Plain text only!'), FileRequired()])
+    submit = SubmitField()
+    title = StringField('Title', validators=[DataRequired(), Length(1, 32)])

app/test/views.py

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+from flask import render_template
+from flask_login import login_required
+from . import test
+from .forms import TestForm
+
+
+@test.route('/')
+@login_required
+def index():
+    test_form = TestForm()
+    return render_template('test/index.html.j2', title='Test',
+                           test_form=test_form)