bitbake: tests/fetch: Move commonly used imports to top

Avoid multiple import statements for anything that is used more than
once. Additionally, drop no longer used imports.

(Bitbake rev: 7c74310440f4d6ec47cf5bacf597e18308b3bb20)

Signed-off-by: Philip Lorenz <philip.lorenz@bmw.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/tests/fetch.py

@@ -7,7 +7,9 @@
 #
 
 import contextlib
+import shutil
 import unittest
+import urllib.parse
 import hashlib
 import tempfile
 import collections
@@ -1275,7 +1277,6 @@ class FetcherNetworkTest(FetcherTest):
 
 class SVNTest(FetcherTest):
     def skipIfNoSvn():
-        import shutil
         if not shutil.which("svn"):
             return unittest.skip("svn not installed,  tests being skipped")
 
@@ -1398,8 +1399,6 @@ class TrustedNetworksTest(FetcherTest):
         self.assertFalse(bb.fetch.trusted_network(self.d, url))
 
 class URLHandle(unittest.TestCase):
-    import urllib.parse
-
     # Quote password as per RFC3986
     password = urllib.parse.quote(r"!#$%^&*()-_={}[]\|:?,.<>~`", r"!$&'/()*+,;=")
     datatable = {
@@ -1426,7 +1425,6 @@ class URLHandle(unittest.TestCase):
             self.assertEqual(result, v)
 
     def test_encodeurl(self):
-        import urllib.parse
         for k, v in self.datatable.items():
             result = bb.fetch.encodeurl(v)
             if result.startswith("file:"):
@@ -2271,7 +2269,6 @@ class GitShallowTest(FetcherTest):
 
 class GitLfsTest(FetcherTest):
     def skipIfNoGitLFS():
-        import shutil
         if not shutil.which('git-lfs'):
             return unittest.skip('git-lfs not installed')
         return lambda f: f
@@ -2391,8 +2388,6 @@ class GitLfsTest(FetcherTest):
 
     @skipIfNoGitLFS()
     def test_lfs_enabled(self):
-        import shutil
-
         uri = 'git://%s;protocol=file;lfs=1;branch=master' % self.srcdir
         self.d.setVar('SRC_URI', uri)
 
@@ -2403,8 +2398,6 @@ class GitLfsTest(FetcherTest):
 
     @skipIfNoGitLFS()
     def test_lfs_disabled(self):
-        import shutil
-
         uri = 'git://%s;protocol=file;lfs=0;branch=master' % self.srcdir
         self.d.setVar('SRC_URI', uri)
 
@@ -2414,8 +2407,6 @@ class GitLfsTest(FetcherTest):
         fetcher.unpack(self.d.getVar('WORKDIR'))
 
     def test_lfs_enabled_not_installed(self):
-        import shutil
-
         uri = 'git://%s;protocol=file;lfs=1;branch=master' % self.srcdir
         self.d.setVar('SRC_URI', uri)
 
@@ -2436,8 +2427,6 @@ class GitLfsTest(FetcherTest):
             ud.method._find_git_lfs = old_find_git_lfs
 
     def test_lfs_disabled_not_installed(self):
-        import shutil
-
         uri = 'git://%s;protocol=file;lfs=0;branch=master' % self.srcdir
         self.d.setVar('SRC_URI', uri)
 
@@ -2611,7 +2600,6 @@ class CrateTest(FetcherTest):
 
 class NPMTest(FetcherTest):
     def skipIfNoNpm():
-        import shutil
         if not shutil.which('npm'):
             return unittest.skip('npm not installed')
         return lambda f: f
@@ -3294,7 +3282,6 @@ class FetchPremirroronlyNetworkTest(FetcherTest):
         self.d.setVar("PREMIRRORS", self.recipe_url + " " + "file://{}".format(self.mirrordir) + " \n")
 
     def make_git_repo(self):
-        import shutil
         self.mirrorname = "git2_git.yoctoproject.org.fstests.tar.gz"
         os.makedirs(self.clonedir)
         self.git("clone --bare {}".format(self.recipe_url), self.clonedir)
@@ -3324,7 +3311,6 @@ class FetchPremirroronlyMercurialTest(FetcherTest):
         the test covers also basic hg:// clone (see fetch_and_create_tarball
     """
     def skipIfNoHg():
-        import shutil
         if not shutil.which('hg'):
             return unittest.skip('Mercurial not installed')
         return lambda f: f
@@ -3380,7 +3366,6 @@ class FetchPremirroronlyBrokenTarball(FetcherTest):
             targz.write("This is not tar.gz file!")
 
     def test_mirror_broken_download(self):
-        import sys
         self.d.setVar("SRCREV", "0"*40)
         fetcher = bb.fetch.Fetch([self.recipe_url], self.d)
         with self.assertRaises(bb.fetch2.FetchError), self.assertLogs() as logs: