From 12a48f3bfe9f3252793f365217070ac8029a3df7 Mon Sep 17 00:00:00 2001
From: "Gerber, Mike" <mike.gerber@sbb.spk-berlin.de>
Date: Mon, 18 Nov 2019 13:00:40 +0100
Subject: [PATCH] =?UTF-8?q?=E2=9C=85=20dinglehopper:=20Test=20aligning=20l?=
 =?UTF-8?q?ists=20of=20lines?=
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---
 qurator/dinglehopper/tests/test_align.py | 46 ++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/qurator/dinglehopper/tests/test_align.py b/qurator/dinglehopper/tests/test_align.py
index 1f29290..e5415fc 100644
--- a/qurator/dinglehopper/tests/test_align.py
+++ b/qurator/dinglehopper/tests/test_align.py
@@ -1,3 +1,5 @@
+from qurator.dinglehopper import seq_align, distance
+
 from .util import unzip
 from .. import align
 
@@ -61,3 +63,47 @@ def test_with_some_fake_ocr_errors():
     # End
     assert list(left[-1:]) == ['ß']
     assert list(right[-1:]) == ['b']
+
+
+def test_lines():
+    """Test comparing list of lines.
+
+    This mainly serves as documentation for comparing lists of lines.
+    """
+    result = list(seq_align(
+        ['This is a line.', 'This is another', 'And the last line'],
+        ['This is a line.', 'This is another', 'J  u   n      k', 'And the last line']
+    ))
+    left, right = unzip(result)
+    assert list(left)  == ['This is a line.', 'This is another', None,              'And the last line']
+    assert list(right) == ['This is a line.', 'This is another', 'J  u   n      k', 'And the last line']
+
+
+def test_lines_similar():
+    """Test comparing list of lines while using a "weaker equivalence".
+
+    This mainly serves as documentation.
+    """
+
+    class SimilarString:
+        def __init__(self, string):
+            self._string = string
+
+        def __eq__(self, other):
+            return distance(self._string, other._string) < 2    # XXX NOT the final version
+
+        def __ne__(self, other):
+            return not self.__eq__(other)
+
+        def __repr__(self):
+            return 'SimilarString(\'%s\')' % self._string
+
+    result = list(seq_align(
+        [SimilarString('This is a line.'), SimilarString('This is another'),                                   SimilarString('And the last line')],
+        [SimilarString('This is a ljne.'), SimilarString('This is another'), SimilarString('J  u   n      k'), SimilarString('And the last line')]
+    ))
+    left, right = unzip(result)
+    print(left)
+    print(right)
+    assert list(left)  == [SimilarString('This is a line.'), SimilarString('This is another'), None,                             SimilarString('And the last line')]
+    assert list(right) == [SimilarString('This is a ljne.'), SimilarString('This is another'), SimilarString('J  u   n      k'), SimilarString('And the last line')]