diff --git a/test/dynamic-object.c b/test/dynamic-object.c
new file mode 100644
index 0000000..47db389
--- /dev/null
+++ b/test/dynamic-object.c
@@ -0,0 +1,87 @@
+#include <fx/reflection/assembly.h>
+#include <fx/reflection/function.h>
+#include <fx/reflection/type.h>
+#include <fx/string.h>
+#include <stdio.h>
+
+extern fx_assembly *fx_runtime_assembly_get(void);
+
+static fx_string *create_string(const fx_type *ty)
+{
+	const fx_function *string_create = fx_type_get_function(
+		ty,
+		"create_from_cstr");
+	if (!string_create) {
+		printf("cannot find create_from_cstr()\n");
+		return NULL;
+	}
+
+	printf("found fx.string.create_from_cstr()\n");
+	fx_value args[] = {FX_VALUE_CSTR("Hello, world!")};
+	fx_value result = FX_VALUE_EMPTY;
+	fx_status status = fx_function_invoke(
+		string_create,
+		args,
+		sizeof args / sizeof args[0],
+		&result);
+	if (!FX_OK(status)) {
+		printf("call to fx.string.create_from_cstr() failed (%s)\n",
+		       fx_status_description(status));
+		return NULL;
+	}
+
+	fx_string *str = result.v_pointer;
+	return str;
+}
+
+static const char *get_cstr(const fx_type *ty, fx_string *str)
+{
+	const fx_function *get_cstr = fx_type_get_function(ty, "get_cstr");
+	if (!get_cstr) {
+		printf("cannot find get_cstr()\n");
+		return NULL;
+	}
+
+	printf("found fx.string.get_cstr()\n");
+	fx_value args[] = {FX_VALUE_POINTER(str)};
+	fx_value result = FX_VALUE_EMPTY;
+	fx_status status = fx_function_invoke(
+		get_cstr,
+		args,
+		sizeof args / sizeof args[0],
+		&result);
+	if (!FX_OK(status)) {
+		printf("call to fx.string.get_cstr() failed (%s)\n",
+		       fx_status_description(status));
+		return NULL;
+	}
+
+	const char *cstr = result.v_cstr;
+	return cstr;
+}
+
+int main(int argc, const char **argv)
+{
+	fx_assembly *fx_runtime = fx_runtime_assembly_get();
+	fx_assembly_dump(fx_runtime);
+
+	const fx_type *ty = fx_type_get_by_name("fx.string");
+	if (!ty) {
+		printf("cannot find type\n");
+		return -1;
+	}
+
+	printf("found type '%s'\n", fx_type_get_name(ty));
+	fx_string *str = create_string(ty);
+	if (!str) {
+		return -1;
+	}
+
+	const char *cstr = get_cstr(ty, str);
+	if (!cstr) {
+		return -1;
+	}
+
+	printf("created string '%s'\n", cstr);
+	return 0;
+}
diff --git a/test/dynamic-printf.c b/test/dynamic-printf.c
index 8956fbc..2d711dc 100644
--- a/test/dynamic-printf.c
+++ b/test/dynamic-printf.c
@@ -1,4 +1,5 @@
 #include <fx/reflection/function.h>
+#include <fx/string.h>
 #include <fx/value.h>
 #include <inttypes.h>
 #include <stdio.h>
diff --git a/test/dynamic-strings.c b/test/dynamic-strings.c
new file mode 100644
index 0000000..da17437
--- /dev/null
+++ b/test/dynamic-strings.c
@@ -0,0 +1,8 @@
+#include <fx/reflection/function.h>
+#include <fx/value.h>
+#include <stdio.h>
+
+int main(int argc, const char **argv)
+{
+	return 0;
+}