Convert test declarations.

tools/cmake2meson.py

@@ -199,6 +199,8 @@ class Converter:
                 libcmd = 'static_library'
                 args = t.args
             line = '%s_lib = %s(%s)' % (t.args[0].value, libcmd, self.convert_args(args, False))
+        elif t.name == 'add_test':
+            line = 'test(%s)' % self.convert_args(t.args, False)
         elif t.name == 'option':
             optname = t.args[0].value
             description = t.args[1].value