utests data REFACTOR put repetitive commands into macros
diff --git a/tests/utests/basic/test_yanglib.c b/tests/utests/basic/test_yanglib.c
new file mode 100644
index 0000000..563fbb3
--- /dev/null
+++ b/tests/utests/basic/test_yanglib.c
@@ -0,0 +1,138 @@
+/**
+ * @file test_yanglib.c
+ * @author: Michal Vasko <mvasko@cesnet.cz>
+ * @brief unit tests for ietf-yang-library data
+ *
+ * Copyright (c) 2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include <string.h>
+
+#include "context.h"
+#include "in.h"
+#include "log.h"
+#include "set.h"
+#include "tests/config.h"
+#include "tree_data.h"
+#include "tree_schema.h"
+
+const char *schema_a =
+        "module a {\n"
+        "  namespace urn:tests:a;\n"
+        "  prefix a;\n"
+        "  yang-version 1.1;\n"
+        "\n"
+        "  include a_sub;\n"
+        "\n"
+        "  list l2 {\n"
+        "    key \"a\";\n"
+        "    leaf a {\n"
+        "      type uint16;\n"
+        "    }\n"
+        "    leaf b {\n"
+        "      type uint16;\n"
+        "    }\n"
+        "  }\n"
+        "}";
+const char *schema_b =
+        "module b {\n"
+        "  namespace urn:tests:b;\n"
+        "  prefix b;\n"
+        "  yang-version 1.1;\n"
+        "\n"
+        "  import a {\n"
+        "    prefix a;\n"
+        "  }\n"
+        "\n"
+        "  deviation /a:l2 {\n"
+        "    deviate add {\n"
+        "      max-elements 40;\n"
+        "    }\n"
+        "  }\n"
+        "\n"
+        "  leaf foo {\n"
+        "    type string;\n"
+        "  }\n"
+        "}";
+
+static LY_ERR
+test_imp_clb(const char *mod_name, const char *mod_rev, const char *submod_name, const char *sub_rev, void *user_data,
+        LYS_INFORMAT *format, const char **module_data, void (**free_module_data)(void *model_data, void *user_data))
+{
+    const char *schema_a_sub =
+            "submodule a_sub {\n"
+            "    belongs-to a {\n"
+            "        prefix a;\n"
+            "    }\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    feature feat1;\n"
+            "\n"
+            "    list l3 {\n"
+            "        key \"a\";\n"
+            "        leaf a {\n"
+            "            type uint16;\n"
+            "        }\n"
+            "        leaf b {\n"
+            "            type uint16;\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+
+    assert_string_equal(mod_name, "a");
+    assert_null(mod_rev);
+    if (!submod_name) {
+        return LY_ENOTFOUND;
+    }
+    assert_string_equal(submod_name, "a_sub");
+    assert_null(sub_rev);
+    assert_null(user_data);
+
+    *format = LYS_IN_YANG;
+    *module_data = schema_a_sub;
+    *free_module_data = NULL;
+    return LY_SUCCESS;
+}
+
+static void
+test_yanglib(void **state)
+{
+    const char *feats[] = {"feat1", NULL};
+    struct lyd_node *tree;
+    struct ly_set *set;
+    LY_ERR ret;
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, NULL);
+    UTEST_ADD_MODULE(schema_a, LYS_IN_YANG, feats, NULL);
+    UTEST_ADD_MODULE(schema_b, LYS_IN_YANG, NULL, NULL);
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_get_yanglib_data(UTEST_LYCTX, &tree));
+
+    /* make sure there is "a" with a submodule and deviation */
+    ret = lyd_find_xpath(tree, "/ietf-yang-library:yang-library/module-set/module[name='a'][submodule/name='a_sub']"
+            "[feature='feat1'][deviation='b']", &set);
+    assert_int_equal(ret, LY_SUCCESS);
+
+    assert_int_equal(set->count, 1);
+    ly_set_free(set, NULL);
+
+    lyd_free_all(tree);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_yanglib),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}