[fixup]: Add test

run_unittests.py

@@ -950,6 +950,12 @@ class AllPlatformTests(BasePlatformTests):
         self.uninstall()
         self.assertPathDoesNotExist(exename)
 
+    def test_forcefallback(self):
+        testdir = os.path.join(self.unit_test_dir, '26 forcefallback')
+        self.init(testdir, ['--wrap-mode=forcefallback'])
+        self.build()
+        self.run_tests()
+
     def test_testsetups(self):
         if not shutil.which('valgrind'):
                 raise unittest.SkipTest('Valgrind not installed.')

test cases/unit/26 forcefallback/meson.build

@@ -0,0 +1,8 @@
+project('mainproj', 'c',
+  default_options : ['wrap_mode=forcefallback'])
+
+zlib_dep = dependency('zlib', fallback: ['notzlib', 'zlib_dep'])
+
+test_not_zlib = executable('test_not_zlib', ['test_not_zlib.c'], dependencies: [zlib_dep])
+
+test('test_not_zlib', test_not_zlib)

test cases/unit/26 forcefallback/subprojects/notzlib/meson.build

@@ -0,0 +1,7 @@
+project('notzlib', 'c')
+
+notzlib_sources = ['notzlib.c']
+
+notzlib = library('notzlib', notzlib_sources)
+
+zlib_dep = declare_dependency(link_with: notzlib, include_directories: include_directories(['.']), sources: notzlib_sources)

test cases/unit/26 forcefallback/subprojects/notzlib/notzlib.c

@@ -0,0 +1,4 @@
+int not_a_zlib_function (void)
+{
+  return 42;
+}

test cases/unit/26 forcefallback/subprojects/notzlib/notzlib.h

@@ -0,0 +1 @@
+int not_a_zlib_function (void);

test cases/unit/26 forcefallback/test_not_zlib.c

@@ -0,0 +1,8 @@
+#include <notzlib.h>
+
+int main (int ac, char **av)
+{
+  if (not_a_zlib_function () != 42)
+    return 1;
+  return 0;
+}