diff --git a/test cases/vala/8 generated sources/installed_files.txt b/test cases/vala/8 generated sources/installed_files.txt
index a4c37f6ed..e1e943246 100644
--- a/test cases/vala/8 generated sources/installed_files.txt	
+++ b/test cases/vala/8 generated sources/installed_files.txt	
@@ -1 +1,2 @@
 usr/bin/generatedtest
+usr/bin/onlygentest
diff --git a/test cases/vala/8 generated sources/meson.build b/test cases/vala/8 generated sources/meson.build
index 7271821da..6e03404b7 100644
--- a/test cases/vala/8 generated sources/meson.build	
+++ b/test cases/vala/8 generated sources/meson.build	
@@ -5,3 +5,4 @@ cd.set('x', 'y')
 
 subdir('src')
 subdir('tools')
+subdir('onlygen')
diff --git a/test cases/vala/8 generated sources/onlygen/maingen.in b/test cases/vala/8 generated sources/onlygen/maingen.in
new file mode 100644
index 000000000..33c14ce1d
--- /dev/null
+++ b/test cases/vala/8 generated sources/onlygen/maingen.in	
@@ -0,0 +1,3 @@
+int main() {
+    return 0;
+}
diff --git a/test cases/vala/8 generated sources/onlygen/meson.build b/test cases/vala/8 generated sources/onlygen/meson.build
new file mode 100644
index 000000000..f48e0b887
--- /dev/null
+++ b/test cases/vala/8 generated sources/onlygen/meson.build	
@@ -0,0 +1,7 @@
+onlygen = generator(copy,
+  output : '@BASENAME@.vala',
+  arguments : ['@INPUT@', '@OUTPUT@'])
+
+executable('onlygentest', onlygen.process('maingen.in'),
+  install : true,
+  dependencies: [dependency('glib-2.0'), dependency('gobject-2.0')])