-testrun -o Debug::pkgAcquire::Diffs=1 -o Debug::pkgAcquire::rred=1 -o Acquire::PDiffs::Merge=0
-testrun -o Debug::pkgAcquire::Diffs=1 -o Debug::pkgAcquire::rred=1 -o Acquire::PDiffs::Merge=1
+testrun -o Acquire::PDiffs::Merge=0 -o APT::Get::List-Cleanup=1
+testrun -o Acquire::PDiffs::Merge=1 -o APT::Get::List-Cleanup=1
+testrun -o Acquire::PDiffs::Merge=0 -o APT::Get::List-Cleanup=0
+testrun -o Acquire::PDiffs::Merge=1 -o APT::Get::List-Cleanup=0
+
+sha256sum() {
+ echo '01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b -'
+}
+testrun -o Acquire::PDiffs::Merge=0 -o Acquire::ForceHash=SHA1
+testrun -o Acquire::PDiffs::Merge=1 -o Acquire::ForceHash=SHA1
+
+unset -f sha256sum
+sha1sum() {
+ echo 'adc83b19e793491b1c6ea0fd8b46cd9f32e592fc -'
+}
+testrun -o Acquire::PDiffs::Merge=0 -o Acquire::ForceHash=SHA256
+testrun -o Acquire::PDiffs::Merge=1 -o Acquire::ForceHash=SHA256