Added post creation method and unit tests

This commit is contained in:
Nikolai 2021-05-29 17:45:03 -07:00
parent 76f4bcc181
commit 0303544dfb
2 changed files with 103 additions and 0 deletions

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"""
Post query interface
"""
import re
from sqlalchemy import select, func
from amanuensis.db import DbContext, Post
from amanuensis.errors import ArgumentError
def create(
db: DbContext,
lexicon_id: int,
user_id: int,
body: str) -> Post:
"""
Create a new post
"""
# Verify lexicon id
if not isinstance(lexicon_id, int):
raise ArgumentError('Lexicon id must be an integer.')
# Verify user_id
if not (isinstance(user_id, int) or user_id is None):
raise ArgumentError('User id must be an integer.')
# Verify body
if not isinstance(body, str):
raise ArgumentError('Post body must be a string.')
if not body.strip():
raise ArgumentError('Post body cannot be empty.')
new_post = Post(
lexicon_id=lexicon_id,
user_id=user_id,
body=body
)
db.session.add(new_post)
db.session.commit()
return new_post

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tests/test_post.py Normal file
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import pytest
from amanuensis.db import *
import amanuensis.backend.lexicon as lexiq
import amanuensis.backend.user as userq
import amanuensis.backend.post as postq
import amanuensis.backend.membership as memq
from amanuensis.errors import ArgumentError
from .test_db import db
def test_create_post(db):
"""Test new post creation"""
# Make user and lexicon
new_user = userq.create(db, 'username', 'password', 'user', 'a@b.c', False)
assert new_user.id, 'Failed to create user'
new_lexicon = lexiq.create(db, 'Test', None, 'prompt')
assert new_lexicon.id, 'Failed to create lexicon'
# Add the user to the lexicon as an editor
mem = memq.create(db, new_user.id, new_lexicon.id, True)
assert mem, 'Failed to create membership'
# argument dictionary for post object
kwargs = {
'lexicon_id': new_lexicon.id,
'user_id': new_user.id,
'body': 'body'
}
# ids are integers
with pytest.raises(ArgumentError):
postq.create(db, **{**kwargs, 'user_id': 'zero'})
with pytest.raises(ArgumentError):
postq.create(db, **{**kwargs, 'lexicon_id': 'zero'})
# empty arguments don't work
with pytest.raises(ArgumentError):
postq.create(db, **{**kwargs, 'lexicon_id': ''})
with pytest.raises(ArgumentError):
postq.create(db, **{**kwargs, 'user_id': ''})
with pytest.raises(ArgumentError):
postq.create(db, **{**kwargs, 'body': ''})
# post with only whitespace doesn't work
with pytest.raises(ArgumentError):
postq.create(db, **{**kwargs, 'body': ' '})
# post creation works and populates fields
new_post = postq.create(db, **kwargs)
assert new_post
assert new_post.lexicon_id is not None
assert new_post.user_id is not None
assert new_post.body is not None
# post creation works when user is None
new_post = postq.create(db, **{**kwargs, 'user_id': None})
assert new_post
assert new_post.user_id is None