gitdist: Move to Base Dir (TriBITSPub#212)

Added setUp() and tearDown() methods to each unittest class to clear the
GITDIST_MOVE_TO_BASE_DIR environment variable before each test and then
restore it after.

test/python_utils/gitdist_UnitTests.py

@@ -102,6 +102,15 @@ def __init__(self, useGit):
 class test_createAsciiTable(unittest.TestCase):
 
 
+  def setUp(self):
+    self.gitdistMoveToBaseDir = os.environ["GITDIST_MOVE_TO_BASE_DIR"]
+    os.environ["GITDIST_MOVE_TO_BASE_DIR"] = ""
+
+
+  def tearDown(self):
+    os.environ["GITDIST_MOVE_TO_BASE_DIR"] = self.gitdistMoveToBaseDir
+
+
   def test_full_table(self):
     tableData = [
       { "label" : "ID", "align" : "R",
@@ -197,6 +206,15 @@ def test_row_mismatch(self):
 class test_gitdist_getRepoStats(unittest.TestCase):
 
 
+  def setUp(self):
+    self.gitdistMoveToBaseDir = os.environ["GITDIST_MOVE_TO_BASE_DIR"]
+    os.environ["GITDIST_MOVE_TO_BASE_DIR"] = ""
+
+
+  def tearDown(self):
+    os.environ["GITDIST_MOVE_TO_BASE_DIR"] = self.gitdistMoveToBaseDir
+
+
   def test_no_change(self):
     try:
       testDir = createAndMoveIntoTestDir("gitdist_getRepoStats_no_change")
@@ -562,7 +580,12 @@ class test_gitdist_getRepoVersionDictFromRepoVersionFileString(unittest.TestCase
 
 
   def setUp(self):
-    None
+    self.gitdistMoveToBaseDir = os.environ["GITDIST_MOVE_TO_BASE_DIR"]
+    os.environ["GITDIST_MOVE_TO_BASE_DIR"] = ""
+
+
+  def tearDown(self):
+    os.environ["GITDIST_MOVE_TO_BASE_DIR"] = self.gitdistMoveToBaseDir
 
 
   def test_repoVersionFile_withSummary_1(self):
@@ -626,7 +649,12 @@ class test_gitdist(unittest.TestCase):
 
 
   def setUp(self):
-    None
+    self.gitdistMoveToBaseDir = os.environ["GITDIST_MOVE_TO_BASE_DIR"]
+    os.environ["GITDIST_MOVE_TO_BASE_DIR"] = ""
+
+
+  def tearDown(self):
+    os.environ["GITDIST_MOVE_TO_BASE_DIR"] = self.gitdistMoveToBaseDir
 
 
   def test_default(self):