From e78080336c7f7b636cbc6d168bac1d54cec41a09 Mon Sep 17 00:00:00 2001
From: Oleg Broytman <phd@phdru.name>
Date: Sun, 30 Apr 2017 20:14:15 +0300
Subject: [PATCH] Refactor tests: move common functions to ppu_tu.py

---
 tests/find_in_path.py          |  9 -------
 tests/ppu_tu.py                | 49 ++++++++++++++++++++++++++++++++++
 tests/test_cmp.py              | 15 +----------
 tests/test_remove_old_files.py | 40 ++-------------------------
 4 files changed, 52 insertions(+), 61 deletions(-)
 delete mode 100644 tests/find_in_path.py
 create mode 100644 tests/ppu_tu.py

diff --git a/tests/find_in_path.py b/tests/find_in_path.py
deleted file mode 100644
index 4d00613..0000000
--- a/tests/find_in_path.py
+++ /dev/null
@@ -1,9 +0,0 @@
-import os
-
-
-def find_in_path(name):
-    for path in os.environ["PATH"].split(os.pathsep):
-        path = path.strip('"')
-        test_prog_path = os.path.join(path, name)
-        if os.path.exists(test_prog_path):
-            return test_prog_path
diff --git a/tests/ppu_tu.py b/tests/ppu_tu.py
new file mode 100644
index 0000000..563774a
--- /dev/null
+++ b/tests/ppu_tu.py
@@ -0,0 +1,49 @@
+"""PPU test utilities"""
+
+
+import os
+import shutil
+from tempfile import mkdtemp
+
+
+def setup():
+    global tmp_dir
+    tmp_dir = mkdtemp()
+    os.chdir(tmp_dir)
+
+
+def teardown():
+    os.chdir(os.sep)  # To the root of the FS
+    shutil.rmtree(tmp_dir)
+
+
+def find_in_path(name):
+    for path in os.environ["PATH"].split(os.pathsep):
+        path = path.strip('"')
+        test_prog_path = os.path.join(path, name)
+        if os.path.exists(test_prog_path):
+            return test_prog_path
+
+
+def create_files(files, subdirectory=None):
+    if subdirectory:
+        os.makedirs(subdirectory)
+    else:
+        subdirectory = ''
+    for fname in files:
+        with open(os.path.join(subdirectory, fname), 'w'):
+            pass
+
+
+def assert_files_exist(files):
+    if isinstance(files, str):
+        files = [files]
+    for fname in files:
+        assert os.path.exists(fname)
+
+
+def assert_files_not_exist(files):
+    if isinstance(files, str):
+        files = [files]
+    for fname in files:
+        assert not os.path.exists(fname)
diff --git a/tests/test_cmp.py b/tests/test_cmp.py
index 49b48ac..b701837 100755
--- a/tests/test_cmp.py
+++ b/tests/test_cmp.py
@@ -1,11 +1,9 @@
 #! /usr/bin/env python
 
 import os
-import shutil
 import subprocess
 import sys
-from tempfile import mkdtemp
-from find_in_path import find_in_path
+from ppu_tu import setup, teardown, find_in_path  # noqa
 
 
 tmp_dir = None
@@ -15,17 +13,6 @@ if not test_prog_path:
     sys.exit("Cannot find cmp.py in %s" % os.environ["PATH"])
 
 
-def setup():
-    global tmp_dir
-    tmp_dir = mkdtemp()
-    os.chdir(tmp_dir)
-
-
-def teardown():
-    os.chdir(os.sep)  # To the root of the FS
-    shutil.rmtree(tmp_dir)
-
-
 def create_file(name, content):
     with open(name, 'w') as fp:
         fp.write(content)
diff --git a/tests/test_remove_old_files.py b/tests/test_remove_old_files.py
index 95dd98c..93f8669 100755
--- a/tests/test_remove_old_files.py
+++ b/tests/test_remove_old_files.py
@@ -2,11 +2,10 @@
 
 from time import time
 import os
-import shutil
 import subprocess
 import sys
-from tempfile import mkdtemp
-from find_in_path import find_in_path
+from ppu_tu import setup, teardown, find_in_path  # noqa
+from ppu_tu import create_files, assert_files_exist, assert_files_not_exist
 
 
 tmp_dir = None
@@ -17,41 +16,6 @@ if not test_prog_path:
     sys.exit("Cannot find remove-old-files.py in %s" % os.environ["PATH"])
 
 
-def setup():
-    global tmp_dir
-    tmp_dir = mkdtemp()
-    os.chdir(tmp_dir)
-
-
-def teardown():
-    os.chdir(os.sep)  # To the root of the FS
-    shutil.rmtree(tmp_dir)
-
-
-def create_files(files, subdirectory=None):
-    if subdirectory:
-        os.makedirs(subdirectory)
-    else:
-        subdirectory = ''
-    for fname in files:
-        with open(os.path.join(subdirectory, fname), 'w'):
-            pass
-
-
-def assert_files_exist(files):
-    if isinstance(files, str):
-        files = [files]
-    for fname in files:
-        assert os.path.exists(fname)
-
-
-def assert_files_not_exist(files):
-    if isinstance(files, str):
-        files = [files]
-    for fname in files:
-        assert not os.path.exists(fname)
-
-
 def test_remove_old_files():
     create_files(['test1', 'test2'])
     assert_files_exist(['test1', 'test2'])
-- 
2.39.5