Fixed style issues and complains about exceptions with description.

tests/test_single_file_watched.py

@@ -1,28 +1,26 @@
-# coding: utf-8
+"""Test cases when a single file is subscribed."""
 
-""" Test cases when a single file is subscribed. """
-
-from os import mkdir
 import time
+from os import mkdir
 
 from .utils import P, StartWatching, TestEventQueue
 
 SLEEP = 0.001
 
 
 def test_selftest(p: P, start_watching: StartWatching, event_queue: TestEventQueue) -> None:
-    """ Check if all events are catched in SLEEP time. """
+    """Check if all events are catched in SLEEP time."""
 
     emitter = start_watching(path=p())  # Pretty sure this should work
 
-    with open(p('file1.bak'), 'wt') as fp:
-        fp.write('test1')
-    
-    with open(p('file2.bak'), 'wt') as fp:
-        fp.write('test2')
+    with open(p("file1.bak"), "w") as fp:
+        fp.write("test1")
+
+    with open(p("file2.bak"), "w") as fp:
+        fp.write("test2")
 
     time.sleep(SLEEP)
-    
+
     found_files = set()
     try:
         while event_queue.qsize():
@@ -33,101 +31,95 @@ def test_selftest(p: P, start_watching: StartWatching, event_queue: TestEventQue
                 found_files.add(event.src_path)
     finally:
         emitter.stop()
-    
-    assert len(found_files) == 2, 'Number of expected files differ. Increase sleep time.'
+
+    assert len(found_files) == 2, "Number of expected files differ. Increase sleep time."
 
 
 def test_file_access(p: P, start_watching: StartWatching, event_queue: TestEventQueue) -> None:
-    """ Check if file fires events. """
+    """Check if file fires events."""
 
-    file1 = 'file1.bak'
+    file1 = "file1.bak"
     tmpfile = p(file1)
 
-    with open(tmpfile, 'wt') as fp:
-        fp.write('init1')
-    
+    with open(tmpfile, "w") as fp:
+        fp.write("init1")
+
     emitter = start_watching(path=tmpfile)
 
     # This is what we want to see
-    with open(tmpfile, 'wt') as fp:
-        fp.write('test1')
+    with open(tmpfile, "w") as fp:
+        fp.write("test1")
 
     time.sleep(SLEEP)
-    
+
     try:
         while event_queue.qsize():
             event, _ = event_queue.get()
             if event.is_directory:
                 assert event.src_path == p()
                 continue
-            else:
-                assert event.src_path.endswith(file1)
+            assert event.src_path.endswith(file1)
             break
         else:
-            assert False, 'No event catched.'
+            raise AssertionError  # No event catched
     finally:
         emitter.stop()
 
 
-def test_file_access_multiple(
-    p: P, start_watching: StartWatching, event_queue: TestEventQueue
-) -> None:
-    """ Check if file fires events multiple times. """
+def test_file_access_multiple(p: P, start_watching: StartWatching, event_queue: TestEventQueue) -> None:
+    """Check if file fires events multiple times."""
 
-    file1 = 'file1.bak'
+    file1 = "file1.bak"
     tmpfile = p(file1)
 
-    with open(tmpfile, 'wt') as fp:
-        fp.write('init1')
-    
+    with open(tmpfile, "w") as fp:
+        fp.write("init1")
+
     emitter = start_watching(path=tmpfile)
 
     try:
-        for i in range(5):
+        for _i in range(5):
             # This is what we want to see multiple times
-            with open(tmpfile, 'wt') as fp:
-                fp.write('test1')
+            with open(tmpfile, "w") as fp:
+                fp.write("test1")
 
             time.sleep(SLEEP)
-        
+
             while event_queue.qsize():
                 event, _ = event_queue.get()
                 if event.is_directory:
                     assert event.src_path == p()
                     continue
-                else:
-                    assert event.src_path.endswith(file1)
+                assert event.src_path.endswith(file1)
                 break
             else:
-                assert False, 'No event catched.'
-    
+                raise AssertionError  # No event catched
+
     finally:
         emitter.stop()
 
 
-def test_file_access_other_file(
-    p: P, start_watching: StartWatching, event_queue: TestEventQueue
-) -> None:
-    """ Check if other files doesn't fires events. """
+def test_file_access_other_file(p: P, start_watching: StartWatching, event_queue: TestEventQueue) -> None:
+    """Check if other files doesn't fires events."""
 
-    file1 = 'file1.bak'
+    file1 = "file1.bak"
     tmpfile = p(file1)
 
-    with open(tmpfile, 'wt') as fp:
-        fp.write('init1')
-    
+    with open(tmpfile, "w") as fp:
+        fp.write("init1")
+
     emitter = start_watching(path=tmpfile)
 
     # Don't wanted
-    with open(p('file2.bak'), 'wt') as fp:
-        fp.write('test2')
+    with open(p("file2.bak"), "w") as fp:
+        fp.write("test2")
 
     # but this
-    with open(tmpfile, 'wt') as fp:
-        fp.write('test1')
-    
+    with open(tmpfile, "w") as fp:
+        fp.write("test1")
+
     time.sleep(SLEEP)
-    
+
     found_files = set()
     try:
         while event_queue.qsize():
@@ -139,32 +131,32 @@ def test_file_access_other_file(
                 assert event.src_path.endswith(file1)
     finally:
         emitter.stop()
-    
-    assert len(found_files) == 1, 'Number of expected files differ. Wrong file catched.'
+
+    assert len(found_files) == 1, "Number of expected files differ. Wrong file catched."
 
 
 def test_create_folder(p: P, start_watching: StartWatching, event_queue: TestEventQueue) -> None:
-    """ Check if creation of a directory and inside files doesn't fires events. """
+    """Check if creation of a directory and inside files doesn't fires events."""
 
-    file1 = 'file1.bak'
+    file1 = "file1.bak"
     tmpfile = p(file1)
 
-    with open(tmpfile, 'wt') as fp:
-        fp.write('init1')
-    
+    with open(tmpfile, "w") as fp:
+        fp.write("init1")
+
     emitter = start_watching(path=tmpfile)
 
     # Don't wanted
-    mkdir(p('myfolder'))
-    with open(p('myfolder/file2.bak'), 'wt') as fp:
-        fp.write('test2')
+    mkdir(p("myfolder"))
+    with open(p("myfolder/file2.bak"), "w") as fp:
+        fp.write("test2")
 
     # but this
-    with open(tmpfile, 'wt') as fp:
-        fp.write('test1')
-    
+    with open(tmpfile, "w") as fp:
+        fp.write("test1")
+
     time.sleep(SLEEP)
-    
+
     found_files = set()
     try:
         while event_queue.qsize():
@@ -176,5 +168,5 @@ def test_create_folder(p: P, start_watching: StartWatching, event_queue: TestEve
                 assert event.src_path.endswith(file1)
     finally:
         emitter.stop()
-    
-    assert len(found_files) == 1, 'Number of expected files differ. Wrong file catched.'
+
+    assert len(found_files) == 1, "Number of expected files differ. Wrong file catched."