tests/jsonutil: New test

Adding some basic coverage of the json parsing.

Makefile-tests.am

@@ -1,11 +1,15 @@
 include $(top_srcdir)/buildutil/glib-tap.mk
 
-tests_shutil_CPPFLAGS = -I $(srcdir)/src
-tests_shutil_CFLAGS = $(BUILDDEP_GIO_UNIX_CFLAGS)
-tests_shutil_LDADD = $(BUILDDEP_GIO_UNIX_LIBS) libgsystem.la
+tests_jsonutil_CPPFLAGS = -I $(srcdir)/src
+tests_jsonutil_CFLAGS = $(PKGDEP_RPMOSTREE_CFLAGS)
+tests_jsonutil_LDADD = $(PKGDEP_RPMOSTREE_LIBS) librpmostree.la
 
 installed_test_data = tests/libtest.sh
 
 test_scripts = \
 	tests/test-basic.sh			\
 	$(NULL)
+
+test_programs = \
+	tests/jsonutil			\
+	$(NULL)

tests/jsonutil.c

@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <glib-unix.h>
+#include <libgsystem.h>
+#include "rpmostree-json-parsing.h"
+
+static const gchar *test_data =
+"{ \"text\" : \"hello, world!\", \"foo\" : null, \"blah\" : 47, \"double\" : 42.47 }";
+
+static JsonObject *
+get_test_data (void)
+{
+  GError *error = NULL;
+  gs_unref_object JsonParser *parser = json_parser_new ();
+  (void)json_parser_load_from_data (parser, test_data, -1, &error);
+  g_assert_no_error (error);
+  return json_object_ref (json_node_get_object (json_parser_get_root (parser)));
+}
+
+static void
+test_get_optional_string_member (void)
+{
+  GError *error = NULL;
+  JsonObject *obj = get_test_data ();
+  const char *str;
+
+  (void) _rpmostree_jsonutil_object_get_optional_string_member (obj, "nomember", &str, &error);
+  g_assert_no_error (error);
+  g_assert (str == NULL);
+
+  (void) _rpmostree_jsonutil_object_get_optional_string_member (obj, "text", &str, &error);
+  g_assert_no_error (error);
+  g_assert_cmpstr (str, ==, "hello, world!");
+
+  str = _rpmostree_jsonutil_object_require_string_member (obj, "nomember", &error);
+  g_assert (error != NULL);
+  g_clear_error (&error);
+  g_assert (str == NULL);
+
+  str = _rpmostree_jsonutil_object_require_string_member (obj, "text", &error);
+  g_assert_no_error (error);
+  g_assert_cmpstr (str, ==, "hello, world!");
+
+  json_object_unref (obj);
+}
+
+int
+main (int   argc,
+      char *argv[])
+{
+  g_test_init (&argc, &argv, NULL);
+
+  g_test_add_func ("/jsonparsing/get-optional-member", test_get_optional_string_member);
+
+  return g_test_run ();
+}