Добавлены тесты для всех классов

tests/test_csv.py

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+import pytest
+from ipars import CsvManager
+
+
+def test_writerow_and_getrows(tmp_path):
+    cm = CsvManager()
+    filepath = str(tmp_path / 'data.csv')
+    row = ['Alice', '30', 'Engineer']
+
+    cm.writerow(filepath, 'w', row)
+    result = cm.getRows(filepath)
+
+    assert result == [row]
+
+
+def test_writerows_and_getrows(tmp_path):
+    cm = CsvManager()
+    filepath = str(tmp_path / 'data.csv')
+    rows = [['Alice', '30'], ['Bob', '25'], ['Carol', '28']]
+
+    cm.writerows(filepath, 'w', rows)
+    result = cm.getRows(filepath)
+
+    assert result == rows
+
+
+def test_append_mode(tmp_path):
+    cm = CsvManager()
+    filepath = str(tmp_path / 'data.csv')
+
+    cm.writerow(filepath, 'w', ['first'])
+    cm.writerow(filepath, 'a', ['second'])
+    result = cm.getRows(filepath)
+
+    assert result == [['first'], ['second']]
+
+
+def test_custom_delimiter(tmp_path):
+    cm = CsvManager(delimiter=',')
+    filepath = str(tmp_path / 'data.csv')
+    row = ['one', 'two', 'three']
+
+    cm.writerow(filepath, 'w', row)
+    result = cm.getRows(filepath)
+
+    assert result == [row]
+
+
+def test_invalid_mode_raises(tmp_path):
+    cm = CsvManager()
+    filepath = str(tmp_path / 'data.csv')
+    with pytest.raises(ValueError):
+        cm.writerow(filepath, 'x', ['data'])
+
+
+def test_invalid_row_type_raises(tmp_path):
+    cm = CsvManager()
+    filepath = str(tmp_path / 'data.csv')
+    with pytest.raises(ValueError):
+        cm.writerow(filepath, 'w', 'not a list')
+
+
+def test_invalid_constructor_args():
+    with pytest.raises(ValueError):
+        CsvManager(delimiter=123)
+
+
+def test_pprint_does_not_raise(capsys):
+    cm = CsvManager()
+    cm.pprint([['a', 'b'], ['c', 'd']])
+    captured = capsys.readouterr()
+    assert 'a' in captured.out