diff --git a/tests/utests/data/test_diff.c b/tests/utests/data/test_diff.c
index d85027b50..ea87bf4a0 100644
--- a/tests/utests/data/test_diff.c
+++ b/tests/utests/data/test_diff.c
@@ -59,248 +59,99 @@
             lyd_free_all(diff2);\
         }
 
-const char *schema1 =
-        "module defaults {\n"
-        "    yang-version 1.1;\n"
-        "    namespace \"urn:libyang:tests:defaults\";\n"
-        "    prefix df;\n"
+const char *schema =
+        "module defaults {"
+        "yang-version 1.1;"
+        "namespace \"urn:libyang:tests:defaults\";"
+        "prefix df;"
         ""
-        "    feature unhide;\n"
+        "feature unhide;"
         ""
-        "    typedef defint32 {\n"
-        "        type int32;\n"
-        "        default \"42\";\n"
-        "    }\n"
+        "typedef defint32 {type int32; default \"42\";}"
         ""
-        "    leaf hiddenleaf {\n"
-        "        if-feature \"unhide\";\n"
-        "        type int32;\n"
-        "        default \"42\";\n"
-        "    }\n"
-        ""
-        "    container df {\n"
-        "        leaf foo {\n"
-        "            type defint32;\n"
-        "        }\n"
-        ""
-        "        leaf hiddenleaf {\n"
-        "            if-feature \"unhide\";\n"
-        "            type int32;\n"
-        "            default \"42\";\n"
-        "        }\n"
-        ""
-        "        container bar {\n"
-        "            presence \"\";\n"
-        "            leaf hi {\n"
-        "                type int32;\n"
-        "                default \"42\";\n"
-        "            }\n"
-        ""
-        "            leaf ho {\n"
-        "                type int32;\n"
-        "                mandatory true;\n"
-        "            }\n"
-        "        }\n"
-        ""
-        "        leaf-list llist {\n"
-        "            type defint32;\n"
-        "            ordered-by user;\n"
-        "        }\n"
-        ""
-        "        list ul {\n"
-        "            key \"l1\";\n"
-        "            ordered-by user;\n"
-        "            leaf l1 {\n"
-        "                type string;\n"
-        "            }\n"
-        ""
-        "            leaf l2 {\n"
-        "                type int32;\n"
-        "            }\n"
-        ""
-        "            container cont {\n"
-        "                leaf l3 {\n"
-        "                    type string;\n"
-        "                }\n"
-        "            }\n"
-        "        }\n"
-        ""
-        "        leaf-list dllist {\n"
-        "            type uint8;\n"
-        "            default \"1\";\n"
-        "            default \"2\";\n"
-        "            default \"3\";\n"
-        "        }\n"
-        ""
-        "        list list {\n"
-        "            key \"name\";\n"
-        "            leaf name {\n"
-        "                type string;\n"
-        "            }\n"
-        ""
-        "            leaf value {\n"
-        "                type int32;\n"
-        "                default \"42\";\n"
-        "            }\n"
-        "            list list2 {\n"
-        "                key \"name2\";\n"
-        "                leaf name2 {\n"
-        "                    type string;\n"
-        "                }\n"
-        "                leaf value2 {\n"
-        "                    type int32;\n"
-        "                }\n"
-        "            }\n"
-        "        }\n";
-const char *schema2 =
-        "        choice select {\n"
-        "            default \"a\";\n"
-        "            case a {\n"
-        "                choice a {\n"
-        "                    leaf a1 {\n"
-        "                        type int32;\n"
-        "                        default \"42\";\n"
-        "                    }\n"
-        ""
-        "                    leaf a2 {\n"
-        "                        type int32;\n"
-        "                        default \"24\";\n"
-        "                    }\n"
-        "                }\n"
-        "            }\n"
-        ""
-        "            leaf b {\n"
-        "                type string;\n"
-        "            }\n"
-        ""
-        "            container c {\n"
-        "                presence \"\";\n"
-        "                leaf x {\n"
-        "                    type int32;\n"
-        "                    default \"42\";\n"
-        "                }\n"
-        "            }\n"
-        "        }\n"
-        ""
-        "        choice select2 {\n"
-        "            default \"s2b\";\n"
-        "            leaf s2a {\n"
-        "                type int32;\n"
-        "                default \"42\";\n"
-        "            }\n"
-        ""
-        "            case s2b {\n"
-        "                choice s2b {\n"
-        "                    default \"b1\";\n"
-        "                    case b1 {\n"
-        "                        leaf b1_1 {\n"
-        "                            type int32;\n"
-        "                            default \"42\";\n"
-        "                        }\n"
-        ""
-        "                        leaf b1_2 {\n"
-        "                            type string;\n"
-        "                        }\n"
-        ""
-        "                        leaf b1_status {\n"
-        "                            type int32;\n"
-        "                            default \"42\";\n"
-        "                            config false;\n"
-        "                        }\n"
-        "                    }\n"
-        ""
-        "                    leaf b2 {\n"
-        "                        type int32;\n"
-        "                        default \"42\";\n"
-        "                    }\n"
-        "                }\n"
-        "            }\n"
-        "        }\n"
-        "        list kl {\n"
-        "            config \"false\";\n"
-        "            leaf l1 {\n"
-        "                type string;\n"
-        "            }\n"
-        ""
-        "            leaf l2 {\n"
-        "                type int32;\n"
-        "            }\n"
-        "        }\n"
-        ""
-        "        leaf-list kll {\n"
-        "            config \"false\";\n"
-        "            type string;\n"
-        "        }\n"
-        "    }\n"
-        ""
-        "    container hidden {\n"
-        "        leaf foo {\n"
-        "            type int32;\n"
-        "            default \"42\";\n"
-        "        }\n"
-        ""
-        "        leaf baz {\n"
-        "            type int32;\n"
-        "            default \"42\";\n"
-        "        }\n"
-        ""
-        "        leaf papa {\n"
-        "            type int32;\n"
-        "            default \"42\";\n"
-        "            config false;\n"
-        "        }\n"
-        "    }\n"
-        ""
-        "    rpc rpc1 {\n"
-        "        input {\n"
-        "            leaf inleaf1 {\n"
-        "                type string;\n"
-        "            }\n"
-        ""
-        "            leaf inleaf2 {\n"
-        "                type string;\n"
-        "                default \"def1\";\n"
-        "            }\n"
-        "        }\n"
-        ""
-        "        output {\n"
-        "            leaf outleaf1 {\n"
-        "                type string;\n"
-        "                default \"def2\";\n"
-        "            }\n"
-        ""
-        "            leaf outleaf2 {\n"
-        "                type string;\n"
-        "            }\n"
-        "        }\n"
-        "    }\n"
-        ""
-        "    notification notif {\n"
-        "        leaf ntfleaf1 {\n"
-        "            type string;\n"
-        "            default \"def3\";\n"
-        "        }\n"
-        ""
-        "        leaf ntfleaf2 {\n"
-        "            type string;\n"
-        "        }\n"
-        "    }\n"
-        "}\n";
+        "leaf hiddenleaf {if-feature \"unhide\"; type int32; default \"42\";}"
+        "container df {"
+        "  leaf foo {type defint32; }"
+        "  leaf hiddenleaf {if-feature \"unhide\"; type int32; default \"42\";}"
+        "  container bar { presence \"\";"
+        "    leaf hi {type int32; default \"42\";}"
+        "    leaf ho {type int32; mandatory true;}"
+        "  }"
+        "  leaf-list llist {type defint32; ordered-by user;}"
+        "  list ul {key \"l1\"; ordered-by user;"
+        "    leaf l1 {type string;}"
+        "    leaf l2 {type int32;}"
+        "    container cont {"
+        "      leaf l3 {type string;}"
+        "    }"
+        "  }"
+        "  leaf-list dllist {type uint8; default \"1\"; default \"2\"; default \"3\";}"
+        "  list list {key \"name\";"
+        "    leaf name {type string;}"
+        "    leaf value {type int32; default \"42\";}"
+        "    list list2 {key \"name2\";"
+        "      leaf name2 {type string;}"
+        "      leaf value2 {type int32;}"
+        "    }"
+        "  }"
+        "  choice select {default \"a\";"
+        "    case a {"
+        "      choice a {"
+        "         leaf a1 {type int32; default \"42\";}"
+        "         leaf a2 {type int32; default \"24\";}"
+        "      }"
+        "    }"
+        "    leaf b {type string;}"
+        "    container c {presence \"\";"
+        "      leaf x {type int32; default \"42\";}"
+        "    }"
+        "  }"
+        "  choice select2 {default \"s2b\";"
+        "    leaf s2a {type int32; default \"42\";}"
+        "    case s2b {"
+        "      choice s2b {default \"b1\";"
+        "        case b1 {"
+        "          leaf b1_1 {type int32; default \"42\";}"
+        "          leaf b1_2 {type string;}"
+        "          leaf b1_status {type int32; default \"42\"; config false;}"
+        "        }"
+        "        leaf b2 {type int32; default \"42\";}"
+        "      }"
+        "    }"
+        "  }"
+        "  list kl {config \"false\";"
+        "    leaf l1 {type string;}"
+        "    leaf l2 {type int32;}"
+        "  }"
+        "  leaf-list kll {config \"false\"; type string;}"
+        "}"
+        "container hidden {"
+        "  leaf foo {type int32; default \"42\";}"
+        "  leaf baz {type int32; default \"42\";}"
+        "  leaf papa {type int32; default \"42\"; config false;}"
+        "}"
+        "rpc rpc1 {"
+        "  input {"
+        "    leaf inleaf1 {type string;}"
+        "    leaf inleaf2 {type string; default \"def1\";}"
+        "  }"
+        "  output {"
+        "    leaf outleaf1 {type string; default \"def2\";}"
+        "    leaf outleaf2 {type string;}"
+        "  }"
+        "}"
+        "notification notif {"
+        "  leaf ntfleaf1 {type string; default \"def3\";}"
+        "  leaf ntfleaf2 {type string;}"
+        "}"
+        "}";
 
 static int
 setup(void **state)
 {
-    char *schema;
-
     UTEST_SETUP;
 
-    /* create one schema, longer than 4095 chars */
-    schema = malloc(strlen(schema1) + strlen(schema2) + 1);
-    strcpy(schema, schema1);
-    strcat(schema, schema2);
-
     UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
-    free(schema);
 
     return 0;
 }