Use two inputs for a generator to test edge cases.

test cases/common/59 object generator/meson.build

@@ -18,7 +18,7 @@ gen = generator(python,
  output : outputname,
  arguments : [comp, cc, '@INPUT@', '@OUTPUT@'])
 
-generated = gen.process('source.c')
+generated = gen.process(['source.c', 'source2.c'])
 
 e = executable('prog', 'prog.c', generated)
 

test cases/common/59 object generator/prog.c

@@ -1,5 +1,6 @@
-int func_in_obj();
+int func1_in_obj();
+int func2_in_obj();
 
 int main(int argc, char **argv) {
-    return func_in_obj();
+    return func1_in_obj() + func2_in_obj();
 }

test cases/common/59 object generator/source.c

@@ -1,3 +1,3 @@
-int func_in_obj() {
+int func1_in_obj() {
     return 0;
 }

test cases/common/59 object generator/source2.c

@@ -0,0 +1,3 @@
+int func2_in_obj() {
+    return 0;
+}