4 files changed, 16 insertions, 1 deletions
diff --git a/scripts/t/mk.t b/scripts/t/mk.t
index 0062e993c..98c7e5083 100644
--- a/scripts/t/mk.t
+++ b/scripts/t/mk.t
@@ -16,7 +16,7 @@
 use strict;
 use warnings;
 
-use Test::More tests => 6;
+use Test::More tests => 8;
 use Test::Dpkg qw(:paths);
 
 use File::Spec::Functions qw(rel2abs);
@@ -117,5 +117,7 @@ foreach my $tool (keys %buildtools) {
 test_makefile('pkg-info.mk');
 
 test_makefile('vendor.mk');
+test_makefile('vendor-v0.mk');
+test_makefile('vendor-v1.mk');
 
 1;
diff --git a/scripts/t/mk/vendor-v0.mk b/scripts/t/mk/vendor-v0.mk
new file mode 100644
index 000000000..602a8c63a
--- /dev/null
+++ b/scripts/t/mk/vendor-v0.mk
@@ -0,0 +1,6 @@
+dpkg_vendor_derives_from = $(dpkg_vendor_derives_from_v0)
+
+include $(srcdir)/mk/vendor.mk
+
+test:
+	test "$(shell $(call dpkg_vendor_derives_from,debian))" = "yes"
diff --git a/scripts/t/mk/vendor-v1.mk b/scripts/t/mk/vendor-v1.mk
new file mode 100644
index 000000000..11c1314ef
--- /dev/null
+++ b/scripts/t/mk/vendor-v1.mk
@@ -0,0 +1,6 @@
+include $(srcdir)/mk/vendor.mk
+
+dpkg_vendor_derives_from = $(dpkg_vendor_derives_from_v1)
+
+test:
+	test "$(call dpkg_vendor_derives_from,debian)" = "yes"
diff --git a/scripts/t/mk/vendor.mk b/scripts/t/mk/vendor.mk
index 371b39c87..4e0d9ff89 100644
--- a/scripts/t/mk/vendor.mk
+++ b/scripts/t/mk/vendor.mk
@@ -3,3 +3,4 @@ include $(srcdir)/mk/vendor.mk
 test:
 	test "$(DEB_VENDOR)" = "Debian"
 	test "$(DEB_PARENT_VENDOR)" = ""
+	test "$(shell $(call dpkg_vendor_derives_from,debian))" = "yes"