selftest/liboe: add a test for copyhardlinktree()

Add a simple test to validate that the number of files in the
destination matches the number of files in the source after the
copyhardlinktree() has been performed.

(From OE-Core rev: ca5c718b309524e46818627f8b5c9260d009472d)

Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/selftest/liboe.py

@@ -62,3 +62,32 @@ class LibOE(oeSelfTest):
         self.assertIn('user.oetest="testing liboe"', result.output, 'Extended attribute not sert in dst')
 
         oe.path.remove(testloc)
+
+    def test_copy_hardlink_tree_count(self):
+        """
+        Summary:    oe.path.copyhardlinktree() shouldn't miss out files
+        Expected:   src and dst should have the same number of files
+        Product:    OE-Core
+        Author:     Joshua Lock <joshua.g.lock@intel.com>
+        """
+        tmp_dir = get_bb_var('TMPDIR')
+        testloc = oe.path.join(tmp_dir, 'liboetests')
+        src = oe.path.join(testloc, 'src')
+        dst = oe.path.join(testloc, 'dst')
+        bb.utils.mkdirhier(testloc)
+        bb.utils.mkdirhier(src)
+        testfiles = ['foo', 'bar', '.baz', 'quux']
+
+        def touchfile(tf):
+            open(oe.path.join(src, tf), 'w+b').close()
+
+        for f in testfiles:
+            touchfile(f)
+
+        oe.path.copyhardlinktree(src, dst)
+
+        dstcnt = len(os.listdir(dst))
+        srccnt = len(os.listdir(src))
+        self.assertEquals(dstcnt, len(testfiles), "Number of files in dst (%s) differs from number of files in src(%s)." % (dstcnt, srccnt))
+
+        oe.path.remove(testloc)