paperless-ngx/src/documents/tests/test_classifier.py
2020-11-26 22:17:14 +01:00

234 lines
10 KiB
Python

import tempfile
from time import sleep
from unittest import mock
from django.test import TestCase, override_settings
from documents.classifier import DocumentClassifier, IncompatibleClassifierVersionError
from documents.models import Correspondent, Document, Tag, DocumentType
class TestClassifier(TestCase):
def setUp(self):
self.classifier = DocumentClassifier()
def generate_test_data(self):
self.c1 = Correspondent.objects.create(name="c1", matching_algorithm=Correspondent.MATCH_AUTO)
self.c2 = Correspondent.objects.create(name="c2")
self.c3 = Correspondent.objects.create(name="c3", matching_algorithm=Correspondent.MATCH_AUTO)
self.t1 = Tag.objects.create(name="t1", matching_algorithm=Tag.MATCH_AUTO, pk=12)
self.t2 = Tag.objects.create(name="t2", matching_algorithm=Tag.MATCH_ANY, pk=34, is_inbox_tag=True)
self.t3 = Tag.objects.create(name="t3", matching_algorithm=Tag.MATCH_AUTO, pk=45)
self.dt = DocumentType.objects.create(name="dt", matching_algorithm=DocumentType.MATCH_AUTO)
self.dt2 = DocumentType.objects.create(name="dt2", matching_algorithm=DocumentType.MATCH_AUTO)
self.doc1 = Document.objects.create(title="doc1", content="this is a document from c1", correspondent=self.c1, checksum="A", document_type=self.dt)
self.doc2 = Document.objects.create(title="doc1", content="this is another document, but from c2", correspondent=self.c2, checksum="B")
self.doc_inbox = Document.objects.create(title="doc235", content="aa", checksum="C")
self.doc1.tags.add(self.t1)
self.doc2.tags.add(self.t1)
self.doc2.tags.add(self.t3)
self.doc_inbox.tags.add(self.t2)
def testNoTrainingData(self):
try:
self.classifier.train()
except ValueError as e:
self.assertEqual(str(e), "No training data available.")
else:
self.fail("Should raise exception")
def testEmpty(self):
Document.objects.create(title="WOW", checksum="3457", content="ASD")
self.classifier.train()
self.assertIsNone(self.classifier.document_type_classifier)
self.assertIsNone(self.classifier.tags_classifier)
self.assertIsNone(self.classifier.correspondent_classifier)
self.assertListEqual(self.classifier.predict_tags(""), [])
self.assertIsNone(self.classifier.predict_document_type(""))
self.assertIsNone(self.classifier.predict_correspondent(""))
def testTrain(self):
self.generate_test_data()
self.classifier.train()
self.assertListEqual(list(self.classifier.correspondent_classifier.classes_), [-1, self.c1.pk])
self.assertListEqual(list(self.classifier.tags_binarizer.classes_), [self.t1.pk, self.t3.pk])
def testPredict(self):
self.generate_test_data()
self.classifier.train()
self.assertEqual(self.classifier.predict_correspondent(self.doc1.content), self.c1.pk)
self.assertEqual(self.classifier.predict_correspondent(self.doc2.content), None)
self.assertListEqual(self.classifier.predict_tags(self.doc1.content), [self.t1.pk])
self.assertListEqual(self.classifier.predict_tags(self.doc2.content), [self.t1.pk, self.t3.pk])
self.assertEqual(self.classifier.predict_document_type(self.doc1.content), self.dt.pk)
self.assertEqual(self.classifier.predict_document_type(self.doc2.content), None)
def testDatasetHashing(self):
self.generate_test_data()
self.assertTrue(self.classifier.train())
self.assertFalse(self.classifier.train())
def testVersionIncreased(self):
self.generate_test_data()
self.assertTrue(self.classifier.train())
self.assertFalse(self.classifier.train())
classifier2 = DocumentClassifier()
current_ver = DocumentClassifier.FORMAT_VERSION
with mock.patch("documents.classifier.DocumentClassifier.FORMAT_VERSION", current_ver+1):
# assure that we won't load old classifiers.
self.assertRaises(IncompatibleClassifierVersionError, self.classifier.reload)
self.classifier.save_classifier()
# assure that we can load the classifier after saving it.
classifier2.reload()
def testReload(self):
self.generate_test_data()
self.assertTrue(self.classifier.train())
self.classifier.save_classifier()
classifier2 = DocumentClassifier()
classifier2.reload()
v1 = classifier2.classifier_version
# change the classifier after some time.
sleep(1)
self.classifier.save_classifier()
classifier2.reload()
v2 = classifier2.classifier_version
self.assertNotEqual(v1, v2)
@override_settings(DATA_DIR=tempfile.mkdtemp())
def testSaveClassifier(self):
self.generate_test_data()
self.classifier.train()
self.classifier.save_classifier()
new_classifier = DocumentClassifier()
new_classifier.reload()
self.assertFalse(new_classifier.train())
def test_one_correspondent_predict(self):
c1 = Correspondent.objects.create(name="c1", matching_algorithm=Correspondent.MATCH_AUTO)
doc1 = Document.objects.create(title="doc1", content="this is a document from c1", correspondent=c1, checksum="A")
self.classifier.train()
self.assertEqual(self.classifier.predict_correspondent(doc1.content), c1.pk)
def test_one_correspondent_predict_manydocs(self):
c1 = Correspondent.objects.create(name="c1", matching_algorithm=Correspondent.MATCH_AUTO)
doc1 = Document.objects.create(title="doc1", content="this is a document from c1", correspondent=c1, checksum="A")
doc2 = Document.objects.create(title="doc2", content="this is a document from noone", checksum="B")
self.classifier.train()
self.assertEqual(self.classifier.predict_correspondent(doc1.content), c1.pk)
self.assertIsNone(self.classifier.predict_correspondent(doc2.content))
def test_one_type_predict(self):
dt = DocumentType.objects.create(name="dt", matching_algorithm=DocumentType.MATCH_AUTO)
doc1 = Document.objects.create(title="doc1", content="this is a document from c1",
checksum="A", document_type=dt)
self.classifier.train()
self.assertEqual(self.classifier.predict_document_type(doc1.content), dt.pk)
def test_one_type_predict_manydocs(self):
dt = DocumentType.objects.create(name="dt", matching_algorithm=DocumentType.MATCH_AUTO)
doc1 = Document.objects.create(title="doc1", content="this is a document from c1",
checksum="A", document_type=dt)
doc2 = Document.objects.create(title="doc1", content="this is a document from c2",
checksum="B")
self.classifier.train()
self.assertEqual(self.classifier.predict_document_type(doc1.content), dt.pk)
self.assertIsNone(self.classifier.predict_document_type(doc2.content))
def test_one_tag_predict(self):
t1 = Tag.objects.create(name="t1", matching_algorithm=Tag.MATCH_AUTO, pk=12)
doc1 = Document.objects.create(title="doc1", content="this is a document from c1", checksum="A")
doc1.tags.add(t1)
self.classifier.train()
self.assertListEqual(self.classifier.predict_tags(doc1.content), [t1.pk])
def test_one_tag_predict_unassigned(self):
t1 = Tag.objects.create(name="t1", matching_algorithm=Tag.MATCH_AUTO, pk=12)
doc1 = Document.objects.create(title="doc1", content="this is a document from c1", checksum="A")
self.classifier.train()
self.assertListEqual(self.classifier.predict_tags(doc1.content), [])
def test_two_tags_predict_singledoc(self):
t1 = Tag.objects.create(name="t1", matching_algorithm=Tag.MATCH_AUTO, pk=12)
t2 = Tag.objects.create(name="t2", matching_algorithm=Tag.MATCH_AUTO, pk=121)
doc4 = Document.objects.create(title="doc1", content="this is a document from c4", checksum="D")
doc4.tags.add(t1)
doc4.tags.add(t2)
self.classifier.train()
self.assertListEqual(self.classifier.predict_tags(doc4.content), [t1.pk, t2.pk])
def test_two_tags_predict(self):
t1 = Tag.objects.create(name="t1", matching_algorithm=Tag.MATCH_AUTO, pk=12)
t2 = Tag.objects.create(name="t2", matching_algorithm=Tag.MATCH_AUTO, pk=121)
doc1 = Document.objects.create(title="doc1", content="this is a document from c1", checksum="A")
doc2 = Document.objects.create(title="doc1", content="this is a document from c2", checksum="B")
doc3 = Document.objects.create(title="doc1", content="this is a document from c3", checksum="C")
doc4 = Document.objects.create(title="doc1", content="this is a document from c4", checksum="D")
doc1.tags.add(t1)
doc2.tags.add(t2)
doc4.tags.add(t1)
doc4.tags.add(t2)
self.classifier.train()
self.assertListEqual(self.classifier.predict_tags(doc1.content), [t1.pk])
self.assertListEqual(self.classifier.predict_tags(doc2.content), [t2.pk])
self.assertListEqual(self.classifier.predict_tags(doc3.content), [])
self.assertListEqual(self.classifier.predict_tags(doc4.content), [t1.pk, t2.pk])
def test_one_tag_predict_multi(self):
t1 = Tag.objects.create(name="t1", matching_algorithm=Tag.MATCH_AUTO, pk=12)
doc1 = Document.objects.create(title="doc1", content="this is a document from c1", checksum="A")
doc2 = Document.objects.create(title="doc2", content="this is a document from c2", checksum="B")
doc1.tags.add(t1)
doc2.tags.add(t1)
self.classifier.train()
self.assertListEqual(self.classifier.predict_tags(doc1.content), [t1.pk])
self.assertListEqual(self.classifier.predict_tags(doc2.content), [t1.pk])
def test_one_tag_predict_multi_2(self):
t1 = Tag.objects.create(name="t1", matching_algorithm=Tag.MATCH_AUTO, pk=12)
doc1 = Document.objects.create(title="doc1", content="this is a document from c1", checksum="A")
doc2 = Document.objects.create(title="doc2", content="this is a document from c2", checksum="B")
doc1.tags.add(t1)
self.classifier.train()
self.assertListEqual(self.classifier.predict_tags(doc1.content), [t1.pk])
self.assertListEqual(self.classifier.predict_tags(doc2.content), [])