Test for non-master default branches

tests/git.bats

@@ -91,6 +91,14 @@ function clean {
     [[ "$TIME" != "$NEWTIME" ]]
 }
 
+@test "support any default branch (not just master)" {
+    cd $GITREPO
+    # Move "master" to "default" branch
+    git branch -m default
+    $FORGEBUILD -b $FORGEBUILDDIR time
+    [ -f /tmp/forgebuild-time ]
+}
+
 # Task settings
 
 @test "host-based settings are loaded" {