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);
+}