Fix test relate to FileManager.save

Do not save if not dirty and encoding has not changed

pyqode/core/managers/file.py

@@ -346,7 +346,8 @@ def save(self, path=None, encoding=None, fallback_encoding=None):
             error. None to use the locale preferred encoding
 
         """
-        if not self.editor.dirty:
+        if not self.editor.dirty and (encoding is not None and
+                                      encoding == self.encoding):
             return
         if fallback_encoding is None:
             fallback_encoding = locale.getpreferredencoding()

test/test_api/test_text.py

@@ -8,7 +8,7 @@
 import pytest
 from pyqode.core.api.utils import TextHelper, keep_tc_pos
 
-from pyqode.qt import QtGui
+from pyqode.qt import QtGui, QtWidgets
 from pyqode.qt.QtTest import QTest
 from ..helpers import editor_open
 
@@ -129,6 +129,10 @@ def test_open_file(editor):
 def test_save_file(editor):
     path = os.path.join(os.getcwd(), 'tmp.py')
     TextHelper(editor).select_lines(0, 1)
+    assert isinstance(editor, QtWidgets.QPlainTextEdit)
+    assert not editor.dirty
+    editor.appendPlainText('some text')
+    assert editor.dirty
     editor.file.save(path, encoding='utf-8')
     assert os.path.exists(path)
     assert editor.file.encoding == 'utf-8'
@@ -232,7 +236,7 @@ def test_search_text(editor):
     occurences, index = TextHelper(editor).search_text(
         editor.textCursor(), 'import', QtGui.QTextDocument.FindCaseSensitively)
     assert index == -1
-    assert len(occurences) == 11
+    assert len(occurences) == 10
 
 
 @editor_open(__file__)
@@ -292,7 +296,7 @@ def test_extended_selection(editor):
 
 @editor_open(__file__)
 def test_matched_selection(editor):
-    line, column, text = 232, 14, '''        editor.textCursor(), 'import', QtGui.QTextDocument.FindCaseSensitively'''
+    line, column, text = 297, 14, '''__file__'''
     cursor = editor.textCursor()
     assert not cursor.hasSelection()
     helper = TextHelper(editor)