XML printer FEATURE support for actions and anydata
diff --git a/src/parser_xml.c b/src/parser_xml.c
index 1e8de87..e236b69 100644
--- a/src/parser_xml.c
+++ b/src/parser_xml.c
@@ -362,7 +362,7 @@
             size_t p_len, n_len;
 
             /* skip children data and store them as a string */
-            while (cur_element_index <= ctx->elements.count) {
+            while (ctx->status != LYXML_END && cur_element_index <= ctx->elements.count) {
                 switch (ctx->status) {
                 case LYXML_ELEMENT:
                     ret = lyxml_get_element((struct lyxml_context *)ctx, data, &p, &p_len, &n, &n_len);
@@ -379,18 +379,19 @@
                     }
                     break;
                 case LYXML_END:
-                    /* unexpected end of data */
+                    /* end of data */
                     LOGINT(ctx->ctx);
                     ret = LY_EINT;
                     goto cleanup;
                 }
                 LY_CHECK_GOTO(ret, cleanup);
             }
-            /* data now points after the anydata's closing element tag, we need just end of its content */
-            for (stop = *data - 1; *stop != '<'; --stop);
-
             ((struct lyd_node_any*)cur)->value_type = LYD_ANYDATA_XML;
-            ((struct lyd_node_any*)cur)->value.xml = lydict_insert(ctx->ctx, start, stop - start);
+            if (start != *data) {
+                /* data now points after the anydata's closing element tag, we need just end of its content */
+                for (stop = *data - 1; *stop != '<'; --stop);
+                ((struct lyd_node_any*)cur)->value.xml = lydict_insert(ctx->ctx, start, stop - start);
+            }
         }
 
         /* calculate the hash and insert it into parent (list with keys is handled when its keys are inserted) */
@@ -431,10 +432,6 @@
     /* init */
     *result = NULL;
 
-    if (!data || !data[0]) {
-        goto no_data;
-    }
-
     if (options & LYD_OPT_RPCREPLY) {
         /* prepare container for RPC reply, for which we need RPC
          * - prepare *result as top-level node
@@ -442,7 +439,10 @@
         const struct lyd_node *action;
         for (action = trees[0]; action && action->schema->nodetype != LYS_ACTION; action = lyd_node_children(action)) {
             /* skip list's keys */
-            for ( ;action->schema->nodetype == LYS_LEAF; action = action->next);
+            for ( ;action && action->schema->nodetype == LYS_LEAF; action = action->next);
+            if (action && action->schema->nodetype == LYS_ACTION) {
+                break;
+            }
         }
         if (!action) {
             LOGERR(ctx, LY_EINVAL, "Data parser invalid argument trees - the first item in the array must be the RPC/action request when parsing %s.",
@@ -454,6 +454,10 @@
         for (*result = (struct lyd_node*)parent; (*result)->parent; *result = (struct lyd_node*)(*result)->parent);
     }
 
+    if (!data || !data[0]) {
+        goto no_data;
+    }
+
     ret = lydxml_nodes(&xmlctx, parent, &data, *result ? &parent->child : result);
     if (ret) {
         lyd_free_all(*result);
diff --git a/src/printer_data.h b/src/printer_data.h
index 197463c..245dbb4 100644
--- a/src/printer_data.h
+++ b/src/printer_data.h
@@ -63,7 +63,7 @@
  * node of the data tree to print the specific subtree.
  * @param[in] format Data output format.
  * @param[in] options [Data printer flags](@ref dataprinterflags). With \p format LYD_LYB, only #LYP_WITHSIBLINGS option is accepted.
- * @return Number of printed bytes in case of success.
+ * @return Number of printed characters (excluding the null byte used to end the string) in case of success.
  * @return Negative value failure (absolute value corresponds to LY_ERR values).
  */
 ssize_t lyd_print_mem(char **strp, const struct lyd_node *root, LYD_FORMAT format, int options);
@@ -76,7 +76,7 @@
  * node of the data tree to print the specific subtree.
  * @param[in] format Data output format.
  * @param[in] options [Data printer flags](@ref dataprinterflags). With \p format LYD_LYB, only #LYP_WITHSIBLINGS option is accepted.
- * @return Number of printed bytes in case of success.
+ * @return Number of printed characters (excluding the null byte used to end the string) in case of success.
  * @return Negative value failure (absolute value corresponds to LY_ERR values).
  */
 ssize_t lyd_print_fd(int fd, const struct lyd_node *root, LYD_FORMAT format, int options);
@@ -89,7 +89,7 @@
  * node of the data tree to print the specific subtree.
  * @param[in] format Data output format.
  * @param[in] options [Data printer flags](@ref dataprinterflags). With \p format LYD_LYB, only #LYP_WITHSIBLINGS option is accepted.
- * @return Number of printed bytes in case of success.
+ * @return Number of printed characters (excluding the null byte used to end the string) in case of success.
  * @return Negative value failure (absolute value corresponds to LY_ERR values).
  */
 ssize_t lyd_print_file(FILE *f, const struct lyd_node *root, LYD_FORMAT format, int options);
@@ -102,7 +102,7 @@
  * node of the data tree to print the specific subtree.
  * @param[in] format Data output format.
  * @param[in] options [Data printer flags](@ref dataprinterflags). With \p format LYD_LYB, only #LYP_WITHSIBLINGS option is accepted.
- * @return Number of printed bytes in case of success.
+ * @return Number of printed characters (excluding the null byte used to end the string) in case of success.
  * @return Negative value failure (absolute value corresponds to LY_ERR values).
  */
 ssize_t lyd_print_path(const char *path, const struct lyd_node *root, LYD_FORMAT format, int options);
@@ -116,7 +116,7 @@
  * node of the data tree to print the specific subtree.
  * @param[in] format Data output format.
  * @param[in] options [Data printer flags](@ref dataprinterflags). With \p format LYD_LYB, only #LYP_WITHSIBLINGS option is accepted.
- * @return Number of printed bytes in case of success.
+ * @return Number of printed characters (excluding the null byte used to end the string) in case of success.
  * @return Negative value failure (absolute value corresponds to LY_ERR values).
  */
 ssize_t lyd_print_clb(ssize_t (*writeclb)(void *arg, const void *buf, size_t count), void *arg, const struct lyd_node *root,
diff --git a/src/printer_xml.c b/src/printer_xml.c
index 8d2dd01..ecc6e75 100644
--- a/src/printer_xml.c
+++ b/src/printer_xml.c
@@ -121,10 +121,9 @@
         break;
     case LYS_CONTAINER:
     case LYS_LIST:
-#if 0
-    case LYS_RPC:
     case LYS_ACTION:
     case LYS_NOTIF:
+#if 0
         if (options & (LYP_WD_ALL_TAG | LYP_WD_IMPL_TAG)) {
             /* get with-defaults module and print its namespace */
             wdmod = ly_ctx_get_module(node->schema->module->ctx, "ietf-netconf-with-defaults", NULL, 1);
@@ -419,91 +418,73 @@
     return LY_SUCCESS;
 }
 
-#if 0
-static int
-xml_print_anydata(struct lyout *out, int level, const struct lyd_node *node, int toplevel, int options)
+static LY_ERR
+xml_print_anydata(struct xmlpr_ctx *ctx, const struct lyd_node_any *node)
 {
-    char *buf;
-    struct lyd_node_anydata *any = (struct lyd_node_anydata *)node;
+    struct lyd_node_any *any = (struct lyd_node_any *)node;
     struct lyd_node *iter;
-    const char *ns;
+    int options_backup;
 
-    LY_PRINT_SET;
+    LY_CHECK_RET(xml_print_node_open(ctx, (struct lyd_node *)node));
 
-    if (toplevel || !node->parent || nscmp(node, node->parent)) {
-        /* print "namespace" */
-        ns = lyd_node_module(node)->ns;
-        ly_print(out, "%*s<%s xmlns=\"%s\"", INDENT, node->schema->name, ns);
-    } else {
-        ly_print(out, "%*s<%s", INDENT, node->schema->name);
-    }
-
-    if (toplevel) {
-        xml_print_ns(out, node, options);
-    }
-    if (xml_print_attrs(out, node, options)) {
-        return EXIT_FAILURE;
-    }
-    if (!(void*)any->value.tree || (any->value_type == LYD_ANYDATA_CONSTSTRING && !any->value.str[0])) {
+    if (!any->value.tree) {
         /* no content */
-        ly_print(out, "/>%s", level ? "\n" : "");
+no_content:
+        ly_print(ctx->out, "/>%s", LEVEL ? "\n" : "");
+        return LY_SUCCESS;
     } else {
-        if (any->value_type == LYD_ANYDATA_DATATREE) {
-            /* print namespaces in the anydata data tree */
-            LY_TREE_FOR(any->value.tree, iter) {
-                xml_print_ns(out, iter, options);
-            }
-        }
-        /* close opening tag ... */
-        ly_print(out, ">");
-        /* ... and print anydata content */
         switch (any->value_type) {
-        case LYD_ANYDATA_CONSTSTRING:
-            lyxml_dump_text(out, any->value.str, LYXML_DATA_ELEM);
-            break;
         case LYD_ANYDATA_DATATREE:
-            if (any->value.tree) {
-                if (level) {
-                    ly_print(out, "\n");
-                }
-                LY_TREE_FOR(any->value.tree, iter) {
-                    if (xml_print_node(out, level ? level + 1 : 0, iter, 0, (options & ~(LYP_WITHSIBLINGS | LYP_NETCONF)))) {
-                        return EXIT_FAILURE;
-                    }
+            /* close opening tag and print data */
+            options_backup = ctx->options;
+            ctx->options &= ~(LYDP_WITHSIBLINGS | LYDP_NETCONF);
+            LEVEL_INC;
+
+            ly_print(ctx->out, ">%s", LEVEL ? "\n" : "");
+            LY_LIST_FOR(any->value.tree, iter) {
+                if (xml_print_node(ctx, iter)) {
+                    return EXIT_FAILURE;
                 }
             }
-            break;
-        case LYD_ANYDATA_XML:
-            lyxml_print_mem(&buf, any->value.xml, (level ? LYXML_PRINT_FORMAT | LYXML_PRINT_NO_LAST_NEWLINE : 0)
-                                                   | LYXML_PRINT_SIBLINGS);
-            ly_print(out, "%s%s", level ? "\n" : "", buf);
-            free(buf);
-            break;
-        case LYD_ANYDATA_SXML:
-            /* print without escaping special characters */
-            ly_print(out, "%s", any->value.str);
-            break;
-        case LYD_ANYDATA_JSON:
-        case LYD_ANYDATA_LYB:
-            /* JSON and LYB format is not supported */
-            LOGWRN(node->schema->module->ctx, "Unable to print anydata content (type %d) as XML.", any->value_type);
+
+            LEVEL_DEC;
+            ctx->options = options_backup;
             break;
         case LYD_ANYDATA_STRING:
-        case LYD_ANYDATA_SXMLD:
-        case LYD_ANYDATA_JSOND:
-        case LYD_ANYDATA_LYBD:
-            /* dynamic strings are used only as input parameters */
-            assert(0);
+            /* escape XML-sensitive characters */
+            if (!any->value.str[0]) {
+                goto no_content;
+            }
+            /* close opening tag and print data */
+            ly_print(ctx->out, ">");
+            lyxml_dump_text(ctx->out, any->value.str, 0);
             break;
+        case LYD_ANYDATA_XML:
+            /* print without escaping special characters */
+            if (!any->value.str[0]) {
+                goto no_content;
+            }
+            ly_print(ctx->out, ">%s", any->value.str);
+            break;
+        case LYD_ANYDATA_JSON:
+#if 0 /* TODO LYB format */
+        case LYD_ANYDATA_LYB:
+#endif
+            /* JSON and LYB format is not supported */
+            LOGWRN(node->schema->module->ctx, "Unable to print anydata content (type %d) as XML.", any->value_type);
+            goto no_content;
         }
 
         /* closing tag */
-        ly_print(out, "</%s>%s", node->schema->name, level ? "\n" : "");
+        if (any->value_type == LYD_ANYDATA_DATATREE) {
+            ly_print(ctx->out, "%*s</%s>%s", INDENT, node->schema->name, LEVEL ? "\n" : "");
+        } else {
+            ly_print(ctx->out, "</%s>%s", node->schema->name, LEVEL ? "\n" : "");
+        }
     }
 
-    LY_PRINT_RET(node->schema->module->ctx);
+    return LY_SUCCESS;
 }
-#endif
 
 /**
  * @brief Print XML element representing lyd_node.
@@ -525,24 +506,20 @@
 #endif
 
     switch (node->schema->nodetype) {
-#if 0
-    case LYS_NOTIF:
-    case LYS_ACTION:
-#endif
     case LYS_CONTAINER:
     case LYS_LIST:
+    case LYS_NOTIF:
+    case LYS_ACTION:
         ret = xml_print_inner(ctx, (const struct lyd_node_inner*)node);
         break;
     case LYS_LEAF:
     case LYS_LEAFLIST:
         ret = xml_print_term(ctx, (const struct lyd_node_term*)node);
         break;
-#if 0
     case LYS_ANYXML:
     case LYS_ANYDATA:
-        ret = xml_print_anydata(ctx, node);
+        ret = xml_print_anydata(ctx, (const struct lyd_node_any*)node);
         break;
-#endif
     default:
         LOGINT(node->schema->module->ctx);
         ret = LY_EINT;
diff --git a/src/tree_data_helpers.c b/src/tree_data_helpers.c
index c85e1f5..66bf94f 100644
--- a/src/tree_data_helpers.c
+++ b/src/tree_data_helpers.c
@@ -29,6 +29,8 @@
     switch (node->schema->nodetype) {
     case LYS_CONTAINER:
     case LYS_LIST:
+    case LYS_ACTION:
+    case LYS_NOTIF:
         return &((struct lyd_node_inner*)node)->child;
     default:
         return NULL;
diff --git a/tests/src/CMakeLists.txt b/tests/src/CMakeLists.txt
index 7c20ce4..c5ded11 100644
--- a/tests/src/CMakeLists.txt
+++ b/tests/src/CMakeLists.txt
@@ -10,7 +10,8 @@
     src_tree_schema_helpers
     src_printer_yang
     src_tree_data
-    src_parser_xml)
+    src_parser_xml
+    src_printer_xml)
 set(local_tests_wraps
     " "
     "-Wl,--wrap=realloc"
@@ -23,6 +24,7 @@
     " "
     " "
     " "
+    " "
     " ")
 set(tests ${tests} ${local_tests} PARENT_SCOPE)
 set(tests_wraps ${tests_wraps} ${local_tests_wraps} PARENT_SCOPE)
diff --git a/tests/src/test_printer_xml.c b/tests/src/test_printer_xml.c
new file mode 100644
index 0000000..942f5b9
--- /dev/null
+++ b/tests/src/test_printer_xml.c
@@ -0,0 +1,289 @@
+/*
+ * @file test_printer_xml.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for functions from printer_yang.c
+ *
+ * Copyright (c) 2019 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
+ */
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <setjmp.h>
+#include <cmocka.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include "../../src/context.h"
+#include "../../src/printer_data.h"
+
+#define BUFSIZE 1024
+char logbuf[BUFSIZE] = {0};
+int store = -1; /* negative for infinite logging, positive for limited logging */
+
+struct state_s {
+    void *func;
+    struct ly_ctx *ctx;
+};
+
+/* set to 0 to printing error messages to stderr instead of checking them in code */
+#define ENABLE_LOGGER_CHECKING 1
+
+#if ENABLE_LOGGER_CHECKING
+static void
+logger(LY_LOG_LEVEL level, const char *msg, const char *path)
+{
+    (void) level; /* unused */
+    if (store) {
+        if (path && path[0]) {
+            snprintf(logbuf, BUFSIZE - 1, "%s %s", msg, path);
+        } else {
+            strncpy(logbuf, msg, BUFSIZE - 1);
+        }
+        if (store > 0) {
+            --store;
+        }
+    }
+}
+#endif
+
+static int
+setup(void **state)
+{
+    struct state_s *s;
+    const char *schema_a = "module defs {namespace urn:tests:defs;prefix d;yang-version 1.1;"
+            "identity crypto-alg; identity interface-type; identity ethernet {base interface-type;} identity fast-ethernet {base ethernet;}}";
+    const char *schema_b = "module types {namespace urn:tests:types;prefix t;yang-version 1.1; import defs {prefix defs;}"
+            "feature f; identity gigabit-ethernet { base defs:ethernet;}"
+            "container cont {leaf leaftarget {type empty;}"
+                            "list listtarget {key id; max-elements 5;leaf id {type uint8;} leaf value {type string;}"
+                                             "action test {input {leaf a {type string;}} output {leaf b {type string;}}}}"
+                            "leaf-list leaflisttarget {type uint8; max-elements 5;}}"
+            "list list {key id; leaf id {type string;} leaf value {type string;} leaf-list targets {type string;}}"
+            "list list2 {key \"id value\"; leaf id {type string;} leaf value {type string;}}"
+            "list list_inst {key id; leaf id {type instance-identifier {require-instance true;}} leaf value {type string;}}"
+            "list list_ident {key id; leaf id {type identityref {base defs:interface-type;}} leaf value {type string;}}"
+            "leaf-list leaflisttarget {type string;}"
+            "leaf binary {type binary {length 5 {error-message \"This base64 value must be of length 5.\";}}}"
+            "leaf binary-norestr {type binary;}"
+            "leaf int8 {type int8 {range 10..20;}}"
+            "leaf uint8 {type uint8 {range 150..200;}}"
+            "leaf int16 {type int16 {range -20..-10;}}"
+            "leaf uint16 {type uint16 {range 150..200;}}"
+            "leaf int32 {type int32;}"
+            "leaf uint32 {type uint32;}"
+            "leaf int64 {type int64;}"
+            "leaf uint64 {type uint64;}"
+            "leaf bits {type bits {bit zero; bit one {if-feature f;} bit two;}}"
+            "leaf enums {type enumeration {enum white; enum yellow {if-feature f;}}}"
+            "leaf dec64 {type decimal64 {fraction-digits 1; range 1.5..10;}}"
+            "leaf dec64-norestr {type decimal64 {fraction-digits 18;}}"
+            "leaf str {type string {length 8..10; pattern '[a-z ]*';}}"
+            "leaf str-norestr {type string;}"
+            "leaf bool {type boolean;}"
+            "leaf empty {type empty;}"
+            "leaf ident {type identityref {base defs:interface-type;}}"
+            "leaf inst {type instance-identifier {require-instance true;}}"
+            "leaf inst-noreq {type instance-identifier {require-instance false;}}"
+            "leaf lref {type leafref {path /leaflisttarget; require-instance true;}}"
+            "leaf lref2 {type leafref {path \"../list[id = current()/../str-norestr]/targets\"; require-instance true;}}"
+            "leaf un1 {type union {"
+              "type leafref {path /int8; require-instance true;}"
+              "type union { type identityref {base defs:interface-type;} type instance-identifier {require-instance true;} }"
+              "type string {length 1..20;}}}"
+            "anydata any;"
+            "rpc sum {input {leaf x {type uint8;} leaf y {type uint8;}} output {leaf result {type uint16;}}}}";
+
+    s = calloc(1, sizeof *s);
+    assert_non_null(s);
+
+#if ENABLE_LOGGER_CHECKING
+    ly_set_log_clb(logger, 1);
+#endif
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_new(NULL, 0, &s->ctx));
+    assert_non_null(lys_parse_mem(s->ctx, schema_a, LYS_IN_YANG));
+    assert_non_null(lys_parse_mem(s->ctx, schema_b, LYS_IN_YANG));
+
+    *state = s;
+
+    return 0;
+}
+
+static int
+teardown(void **state)
+{
+    struct state_s *s = (struct state_s*)(*state);
+
+#if ENABLE_LOGGER_CHECKING
+    if (s->func) {
+        fprintf(stderr, "%s\n", logbuf);
+    }
+#endif
+
+    ly_ctx_destroy(s->ctx, NULL);
+    free(s);
+
+    return 0;
+}
+
+void
+logbuf_clean(void)
+{
+    logbuf[0] = '\0';
+}
+
+#if ENABLE_LOGGER_CHECKING
+#   define logbuf_assert(str) assert_string_equal(logbuf, str)
+#else
+#   define logbuf_assert(str)
+#endif
+
+static void
+test_leaf(void **state)
+{
+    struct state_s *s = (struct state_s*)(*state);
+    struct lyd_node *tree;
+    const char *data;
+    const char *result;
+    char *printed;
+    ssize_t len;
+
+    s->func = test_leaf;
+
+    data = "<int8 xmlns=\"urn:tests:types\">\n 15 \t\n  </int8>";
+    result = "<int8 xmlns=\"urn:tests:types\">15</int8>";
+    assert_non_null(tree = lyd_parse_mem(s->ctx, data, LYD_XML, LYD_OPT_DATA, NULL));
+    assert_true((len = lyd_print_mem(&printed, tree, LYD_XML, 0)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, result);
+    free(printed);
+    lyd_free_all(tree);
+
+    s->func = NULL;
+}
+
+static void
+test_anydata(void **state)
+{
+    struct state_s *s = (struct state_s*)(*state);
+    struct lyd_node *tree;
+    const char *data;
+    char *printed;
+    ssize_t len;
+
+    s->func = test_anydata;
+
+    data = "<any xmlns=\"urn:tests:types\"><somexml xmlns:x=\"url:x\" xmlns=\"example.com\"><x:x/></somexml></any>";
+    assert_non_null(tree = lyd_parse_mem(s->ctx, data, LYD_XML, LYD_OPT_DATA, NULL));
+    assert_true((len = lyd_print_mem(&printed, tree, LYD_XML, 0)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, data);
+    free(printed);
+    lyd_free_all(tree);
+
+    data = "<any xmlns=\"urn:tests:types\"/>";
+    assert_non_null(tree = lyd_parse_mem(s->ctx, data, LYD_XML, LYD_OPT_DATA, NULL));
+    assert_true((len = lyd_print_mem(&printed, tree, LYD_XML, 0)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, data);
+    free(printed);
+    lyd_free_all(tree);
+
+    s->func = NULL;
+}
+
+static void
+test_rpc(void **state)
+{
+    struct state_s *s = (struct state_s*)(*state);
+    struct lyd_node *tree1;
+    struct lyd_node *tree2;
+    const struct lyd_node **trees;
+    const char *request;
+    const char *reply, *result;
+    char *printed;
+    ssize_t len;
+
+    s->func = test_rpc;
+
+    request = "<sum xmlns=\"urn:tests:types\"><x>10</x><y>20</y></sum>";
+    reply = "<result xmlns=\"urn:tests:types\">30</result>";
+    result = "<sum xmlns=\"urn:tests:types\"><result>30</result></sum>";
+    assert_non_null(tree1 = lyd_parse_mem(s->ctx, request, LYD_XML, LYD_OPT_RPC, NULL));
+    assert_true((len = lyd_print_mem(&printed, tree1, LYD_XML, 0)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, request);
+    free(printed);
+    assert_non_null(trees = lyd_trees_new(1, tree1));
+    assert_non_null(tree2 = lyd_parse_mem(s->ctx, reply, LYD_XML, LYD_OPT_RPCREPLY, trees));
+    assert_true((len = lyd_print_mem(&printed, tree2, LYD_XML, 0)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, result);
+    free(printed);
+    lyd_trees_free(trees, 0);
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* no arguments */
+    request = "<sum xmlns=\"urn:tests:types\"/>";
+    reply = "";
+    result = "<sum xmlns=\"urn:tests:types\"/>";
+    assert_non_null(tree1 = lyd_parse_mem(s->ctx, request, LYD_XML, LYD_OPT_RPC, NULL));
+    assert_true((len = lyd_print_mem(&printed, tree1, LYD_XML, 0)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, request);
+    free(printed);
+    assert_non_null(trees = lyd_trees_new(1, tree1));
+    assert_non_null(tree2 = lyd_parse_mem(s->ctx, reply, LYD_XML, LYD_OPT_RPCREPLY, trees));
+    assert_true((len = lyd_print_mem(&printed, tree2, LYD_XML, 0)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, result);
+    free(printed);
+    lyd_trees_free(trees, 0);
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* action
+     * "container cont {leaf leaftarget {type empty;}"
+                            "list listtarget {key id; max-elements 5;leaf id {type uint8;} leaf value {type string;}"
+                                             "action test {input {leaf a {type string;}} output {leaf b {type string;}}}}"
+                            "leaf-list leaflisttarget {type uint8; max-elements 5;}}"
+                            */
+    request = "<cont xmlns=\"urn:tests:types\"><listtarget><id>10</id><test><a>test</a></test></listtarget></cont>";
+    reply = "<b xmlns=\"urn:tests:types\">test-reply</b>";
+    result = "<cont xmlns=\"urn:tests:types\"><listtarget><id>10</id><test><b>test-reply</b></test></listtarget></cont>";;
+    assert_non_null(tree1 = lyd_parse_mem(s->ctx, request, LYD_XML, LYD_OPT_RPC, NULL));
+    assert_true((len = lyd_print_mem(&printed, tree1, LYD_XML, 0)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, request);
+    free(printed);
+    assert_non_null(trees = lyd_trees_new(1, tree1));
+    assert_non_null(tree2 = lyd_parse_mem(s->ctx, reply, LYD_XML, LYD_OPT_RPCREPLY, trees));
+    assert_true((len = lyd_print_mem(&printed, tree2, LYD_XML, 0)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, result);
+    free(printed);
+    lyd_trees_free(trees, 0);
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    s->func = NULL;
+}
+
+int main(void)
+{
+    const struct CMUnitTest tests[] = {
+        cmocka_unit_test_setup_teardown(test_leaf, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_anydata, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_rpc, setup, teardown),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}