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rewrite simple map/reduce test

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blackbrrr 2010-03-17 00:51:01 -05:00
parent f156da4ec2
commit f4d0938e3d
1 changed files with 18 additions and 22 deletions
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38
tests/queryset.py
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@ -637,23 +637,20 @@ class QuerySetTest(unittest.TestCase):
def test_map_reduce(self):
"""Ensure map/reduce is both mapping and reducing.
"""
class Song(Document):
artists = ListField(StringField())
class BlogPost(Document):
title = StringField()
is_cover = BooleanField()
tags = ListField(StringField())
Song.drop_collection()
BlogPost.drop_collection()
Song(title="Gloria", is_cover=True, artists=['Patti Smith']).save()
Song(title="Redondo beach", is_cover=False,
artists=['Patti Smith']).save()
Song(title="My Generation", is_cover=True,
artists=['Patti Smith', 'John Cale']).save()
BlogPost(title="Post #1", tags=['music', 'film', 'print']).save()
BlogPost(title="Post #2", tags=['music', 'film']).save()
BlogPost(title="Post #3", tags=['film', 'photography']).save()
map_f = """
function() {
this.artists.forEach(function(artist) {
emit(artist, 1);
this.tags.forEach(function(tag) {
emit(tag, 1);
});
}
"""
@ -668,19 +665,18 @@ class QuerySetTest(unittest.TestCase):
}
"""
# ensure both artists are found
results = Song.objects.map_reduce(map_f, reduce_f)
# run a map/reduce operation spanning all posts
results = BlogPost.objects.map_reduce(map_f, reduce_f)
results = list(results)
self.assertEqual(len(results), 2)
self.assertEqual(len(results), 4)
# query for a count of Songs per artist, ordered by -count.
# Patti Smith has 3 song credits, and should therefore be first.
results = Song.objects.order_by("-value").map_reduce(map_f, reduce_f)
results = list(results)
self.assertEqual(results[0].key, "Patti Smith")
self.assertEqual(results[0].value, 3.0)
music = filter(lambda r: r.key == "music", results)[0]
self.assertEqual(music.value, 2)
Song.drop_collection()
film = filter(lambda r: r.key == "film", results)[0]
self.assertEqual(film.value, 3)
BlogPost.drop_collection()
def test_map_reduce_finalize(self):
"""Ensure that map, reduce, and finalize run and introduce "scope"