Cannot get autopkgtest tests to run using gbp buildpackage

["A. Lewenberg" <deb251@lewenberg.com>]

I use "gbp buildpackage" to build my Debian packages. I am trying to add 
autopkgtest tests to the source packages, but the autopkgtest tests do 
not run.

To test the process I created a minimal Debian source package containing 
a single file and a single test in debian/tests that always fails. When 
I run "gbp buildpackage" I see nothing in the output that the test in 
debian/tests was run let alone failed.

Here are the relevant files:

%%%% debian/rules
#!/usr/bin/make -f

%:
        dh $@
		
		
%%%% debian/control
Source: myapp
Section: unknown
Priority: optional
Maintainer: John Doe <johndoe@example.com>
Build-Depends: debhelper (>=11~), autopkgtest
Standards-Version: 4.1.4
Testsuite: autopkgtest

Package: myapp
Architecture: any
Multi-Arch: foreign
Depends: ${misc:Depends}, ${shlibs:Depends}
Description: auto-generated package by debmake
 This Debian binary package was auto-generated by the
 debmake(1) command provided by the debmake package.


%%%% debian/tests/control
Tests: fred

%%%% debian/tests/fred
#!/bin/sh
exit 255