113 lines
3.2 KiB
Python
113 lines
3.2 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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import codecs
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import os
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import unittest
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from treelib import Tree
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from treelib.plugins import export_to_dot
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class DotExportCase(unittest.TestCase):
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"""Test class for the export to dot format function"""
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def setUp(self):
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tree = Tree()
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tree.create_node("Hárry", "hárry")
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tree.create_node("Jane", "jane", parent="hárry")
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tree.create_node("Bill", "bill", parent="hárry")
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tree.create_node("Diane", "diane", parent="jane")
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tree.create_node("George", "george", parent="bill")
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self.tree = tree
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def read_generated_output(self, filename):
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output = codecs.open(filename, "r", "utf-8")
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generated = output.read()
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output.close()
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return generated
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def test_export_to_dot(self):
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export_to_dot(self.tree, "tree.dot")
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expected = """\
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digraph tree {
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\t"hárry" [label="Hárry", shape=circle]
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\t"bill" [label="Bill", shape=circle]
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\t"jane" [label="Jane", shape=circle]
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\t"george" [label="George", shape=circle]
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\t"diane" [label="Diane", shape=circle]
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\t"hárry" -> "jane"
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\t"hárry" -> "bill"
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\t"bill" -> "george"
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\t"jane" -> "diane"
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}"""
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self.assertTrue(
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os.path.isfile("tree.dot"), "The file tree.dot could not be found."
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)
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generated = self.read_generated_output("tree.dot")
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self.assertEqual(
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generated, expected, "Generated dot tree is not the expected one"
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)
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os.remove("tree.dot")
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def test_export_to_dot_empty_tree(self):
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empty_tree = Tree()
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export_to_dot(empty_tree, "tree.dot")
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expected = """\
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digraph tree {
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}"""
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self.assertTrue(
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os.path.isfile("tree.dot"), "The file tree.dot could not be found."
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)
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generated = self.read_generated_output("tree.dot")
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self.assertEqual(
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expected, generated, "The generated output for an empty tree is not empty"
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)
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os.remove("tree.dot")
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def test_unicode_filename(self):
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tree = Tree()
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tree.create_node("Node 1", "node_1")
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export_to_dot(tree, "ŕʩϢ.dot")
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expected = """\
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digraph tree {
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\t"node_1" [label="Node 1", shape=circle]
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}"""
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self.assertTrue(
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os.path.isfile("ŕʩϢ.dot"), "The file ŕʩϢ.dot could not be found."
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)
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generated = self.read_generated_output("ŕʩϢ.dot")
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self.assertEqual(
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expected, generated, "The generated file content is not the expected one"
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)
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os.remove("ŕʩϢ.dot")
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def test_export_with_minus_in_filename(self):
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tree = Tree()
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tree.create_node("Example Node", "example-node")
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expected = """\
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digraph tree {
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\t"example-node" [label="Example Node", shape=circle]
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}"""
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export_to_dot(tree, "id_with_minus.dot")
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self.assertTrue(
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os.path.isfile("id_with_minus.dot"),
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"The file id_with_minus.dot could not be found.",
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)
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generated = self.read_generated_output("id_with_minus.dot")
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self.assertEqual(
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expected, generated, "The generated file content is not the expected one"
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)
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os.remove("id_with_minus.dot")
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def tearDown(self):
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self.tree = None
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