tests: cmocka subproject

meson.build

@@ -285,3 +285,9 @@ subdir('src')
 if get_option('include_doc')
   subdir('data')
 endif
+
+if get_option('tests').enabled()
+  cmocka = subproject('cmocka')
+  cmocka_dep = cmocka.get_variable('cmocka_dep')
+endif
+

subprojects/cmocka.wrap

@@ -0,0 +1,5 @@
+[wrap-git]
+url = https://gitlab.com/cmocka/cmocka.git
+revision = 59dc0013f9f29fcf212fe4911c78e734263ce24c
+depth = 1
+branch = master