oeqa/selftest/cases/package.py: adding unittest for package rename conflicts

This Unittest tries to rename a package, using an already used name and
fails on do_package.

Reviewed-by: Yoann CONGAL <yoann.congal@smile.fr>
(From OE-Core rev: efcb5c2b6009632c1ca1c7b401944ccf9fe2eb44)

Signed-off-by: Fawzi KHABER <fawzi.khaber@smile.fr>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit c3fe173d5196506d89aa464ba56aabcf581a60db)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta-selftest/recipes-test/packagenameconflict/packagenameconflict.bb

@@ -0,0 +1,10 @@
+SUMMARY = "Test case that tries to rename a package to an existing one and fails"
+DESCRIPTION = "This generates a packaging error when a package is renamed to a pre-existing name"
+LICENSE = "MIT"
+
+# Add a new package ${PN}-renametest
+PACKAGES += "${PN}-renametest"
+# ... and try to rename the ${PN}-dev to the new ${PN}-renametest (conflict)
+PKG:${PN}-dev = "${PN}-renametest"
+
+EXCLUDE_FROM_WORLD = "1"

meta/lib/oeqa/selftest/cases/package.py

@@ -89,6 +89,13 @@ class VersionOrdering(OESelftestTestCase):
             self.assertEqual(status - 100, sort, "%s %s (%d) failed" % (ver1, ver2, sort))
 
 class PackageTests(OESelftestTestCase):
+    # Verify that a recipe cannot rename a package into an existing one
+    def test_package_name_conflict(self):
+        res = bitbake("packagenameconflict", ignore_status=True)
+        self.assertNotEqual(res.status, 0)
+        err = "package name already exists"
+        self.assertTrue(err in res.output)
+
     # Verify that a recipe which sets up hardlink files has those preserved into split packages
     # Also test file sparseness is preserved
     def test_preserve_sparse_hardlinks(self):