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from flask import render_template_string, request
from flask_sqlalchemy import SQLAlchemy
def test_render_pager(app, client):
db = SQLAlchemy(app)
class Message(db.Model):
id = db.Column(db.Integer, primary_key=True)
@app.route('/pager')
def test():
db.drop_all()
db.create_all()
for i in range(100):
msg = Message()
db.session.add(msg)
db.session.commit()
page = request.args.get('page', 1, type=int)
pagination = Message.query.paginate(page=page, per_page=10)
messages = pagination.items
return render_template_string('''
{% from 'bootstrap4/pagination.html' import render_pager %}
{{ render_pager(pagination) }}
''', pagination=pagination, messages=messages)
response = client.get('/pager')
data = response.get_data(as_text=True)
assert '<nav aria-label="Page navigation">' in data
assert 'Previous' in data
assert 'Next' in data
assert '<li class="page-item disabled">' in data
response = client.get('/pager?page=2')
data = response.get_data(as_text=True)
assert '<nav aria-label="Page navigation">' in data
assert 'Previous' in data
assert 'Next' in data
assert '<li class="page-item disabled">' not in data
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