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"""Test the cogapp.whiteutils module."""
from unittest import TestCase
from .whiteutils import common_prefix, reindent_block, white_prefix
class WhitePrefixTests(TestCase):
"""Test cases for cogapp.whiteutils."""
def test_single_line(self):
self.assertEqual(white_prefix([""]), "")
self.assertEqual(white_prefix([" "]), "")
self.assertEqual(white_prefix(["x"]), "")
self.assertEqual(white_prefix([" x"]), " ")
self.assertEqual(white_prefix(["\tx"]), "\t")
self.assertEqual(white_prefix([" x"]), " ")
self.assertEqual(white_prefix([" \t \tx "]), " \t \t")
def test_multi_line(self):
self.assertEqual(white_prefix([" x", " x", " x"]), " ")
self.assertEqual(white_prefix([" y", " y", " y"]), " ")
self.assertEqual(white_prefix([" y", " y", " y"]), " ")
def test_blank_lines_are_ignored(self):
self.assertEqual(white_prefix([" x", " x", "", " x"]), " ")
self.assertEqual(white_prefix(["", " x", " x", " x"]), " ")
self.assertEqual(white_prefix([" x", " x", " x", ""]), " ")
self.assertEqual(white_prefix([" x", " x", " ", " x"]), " ")
def test_tab_characters(self):
self.assertEqual(white_prefix(["\timport sys", "", "\tprint sys.argv"]), "\t")
def test_decreasing_lengths(self):
self.assertEqual(white_prefix([" x", " x", " x"]), " ")
self.assertEqual(white_prefix([" x", " x", " x"]), " ")
class ReindentBlockTests(TestCase):
"""Test cases for cogapp.reindentBlock."""
def test_non_term_line(self):
self.assertEqual(reindent_block(""), "")
self.assertEqual(reindent_block("x"), "x")
self.assertEqual(reindent_block(" x"), "x")
self.assertEqual(reindent_block(" x"), "x")
self.assertEqual(reindent_block("\tx"), "x")
self.assertEqual(reindent_block("x", " "), " x")
self.assertEqual(reindent_block("x", "\t"), "\tx")
self.assertEqual(reindent_block(" x", " "), " x")
self.assertEqual(reindent_block(" x", "\t"), "\tx")
self.assertEqual(reindent_block(" x", " "), " x")
def test_single_line(self):
self.assertEqual(reindent_block("\n"), "\n")
self.assertEqual(reindent_block("x\n"), "x\n")
self.assertEqual(reindent_block(" x\n"), "x\n")
self.assertEqual(reindent_block(" x\n"), "x\n")
self.assertEqual(reindent_block("\tx\n"), "x\n")
self.assertEqual(reindent_block("x\n", " "), " x\n")
self.assertEqual(reindent_block("x\n", "\t"), "\tx\n")
self.assertEqual(reindent_block(" x\n", " "), " x\n")
self.assertEqual(reindent_block(" x\n", "\t"), "\tx\n")
self.assertEqual(reindent_block(" x\n", " "), " x\n")
def test_real_block(self):
self.assertEqual(
reindent_block("\timport sys\n\n\tprint sys.argv\n"),
"import sys\n\nprint sys.argv\n",
)
class CommonPrefixTests(TestCase):
"""Test cases for cogapp.commonPrefix."""
def test_degenerate_cases(self):
self.assertEqual(common_prefix([]), "")
self.assertEqual(common_prefix([""]), "")
self.assertEqual(common_prefix(["", "", "", "", ""]), "")
self.assertEqual(common_prefix(["cat in the hat"]), "cat in the hat")
def test_no_common_prefix(self):
self.assertEqual(common_prefix(["a", "b"]), "")
self.assertEqual(common_prefix(["a", "b", "c", "d", "e", "f"]), "")
self.assertEqual(common_prefix(["a", "a", "a", "a", "a", "x"]), "")
def test_usual_cases(self):
self.assertEqual(common_prefix(["ab", "ac"]), "a")
self.assertEqual(common_prefix(["aab", "aac"]), "aa")
self.assertEqual(common_prefix(["aab", "aab", "aab", "aac"]), "aa")
def test_blank_line(self):
self.assertEqual(common_prefix(["abc", "abx", "", "aby"]), "")
def test_decreasing_lengths(self):
self.assertEqual(common_prefix(["abcd", "abc", "ab"]), "ab")
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