10 changed files with 119 additions and 84 deletions
@ -0,0 +1,40 @@ |
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from django.test import TestCase |
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import seminar.treelib as tl |
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import seminar.models as m |
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class SimpleTreeLibTests(TestCase): |
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def setUp(self): |
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# Vyrobíme pár nějakých Nodů |
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self.root = m.CastNode(root=None, first_child=None, succ=None, nadpis="Root") |
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self.root.save() |
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self.some_node = m.CastNode(root=self.root, first_child=None, succ=None, nadpis="Přetržené") |
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self.other_node = m.CastNode(root=self.root, first_child=None, succ=None, nadpis="Dítě") |
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self.some_orphan = m.CastNode(root=None, first_child=None, succ=None, nadpis="Ošklivé") |
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self.other_orphan = m.CastNode(root=None, first_child=None, succ=None, nadpis="Káčátko") |
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# Trochu je pospojujeme |
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self.root.first_child = self.some_node |
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self.some_node.succ = self.other_node |
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self.some_orphan.first_child = self.other_orphan |
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# Všechno uložíme |
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self.other_node.save() |
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self.some_node.save() |
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self.other_orphan.save() |
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self.some_orphan.save() |
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self.root.save() |
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def test_safe_functions(self): |
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# safe_pred |
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self.assertEqual(tl.safe_pred(self.other_node), self.some_node) |
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self.assertIsNone(tl.safe_pred(self.root)) |
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self.assertIsNone(tl.safe_pred(self.some_node)) |
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self.assertIsNone(tl.safe_pred(self.some_orphan)) |
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self.assertIsNone(tl.safe_pred(self.other_orphan)) |
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# safe_father_of_first |
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self.assertIsNone(tl.safe_father_of_first(self.root)) |
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self.assertEqual(tl.safe_father_of_first(self.some_node), self.root) |
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self.assertEqual(tl.safe_father_of_first(self.other_node), self.root) |
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self.assertIsNone(tl.safe_father_of_first(self.some_orphan)) |
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self.assertEqual(tl.safe_father_of_first(self.other_orphan), self.some_orphan) |
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@ -1,62 +0,0 @@ |
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import csv, codecs |
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from io import StringIO |
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class UTF8Recoder: |
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""" |
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Iterator that reads an encoded stream and reencodes the input to UTF-8 |
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""" |
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def __init__(self, f, encoding): |
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self.reader = codecs.getreader(encoding)(f) |
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def __iter__(self): |
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return self |
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def next(self): |
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return self.reader.next().encode("utf-8") |
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class UnicodeReader: |
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""" |
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A CSV reader which will iterate over lines in the CSV file "f", |
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which is encoded in the given encoding. |
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""" |
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def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds): |
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f = UTF8Recoder(f, encoding) |
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self.reader = csv.reader(f, dialect=dialect, **kwds) |
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def next(self): |
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row = self.reader.next() |
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return [unicode(s, "utf-8") for s in row] |
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def __iter__(self): |
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return self |
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class UnicodeWriter: |
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""" |
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A CSV writer which will write rows to CSV file "f", |
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which is encoded in the given encoding. |
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""" |
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def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds): |
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# Redirect output to a queue |
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self.queue = cStringIO.StringIO() |
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self.writer = csv.writer(self.queue, dialect=dialect, **kwds) |
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self.stream = f |
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self.encoder = codecs.getincrementalencoder(encoding)() |
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def writerow(self, row): |
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self.writer.writerow([s.encode("utf-8") for s in row]) |
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# Fetch UTF-8 output from the queue ... |
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data = self.queue.getvalue() |
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data = data.decode("utf-8") |
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# ... and reencode it into the target encoding |
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data = self.encoder.encode(data) |
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# write to the target stream |
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self.stream.write(data) |
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# empty queue |
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self.queue.truncate(0) |
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def writerows(self, rows): |
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for row in rows: |
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self.writerow(row) |
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