1 files changed, 43 insertions, 0 deletions
diff --git a/src/lib/cc/tests/element_value_unittests.cc b/src/lib/cc/tests/element_value_unittests.cc
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--- /dev/null
+++ b/src/lib/cc/tests/element_value_unittests.cc
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+// Copyright (C) 2019 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+#include <cc/element_value.h>
+#include <gtest/gtest.h>
+
+using namespace isc::data;
+
+namespace {
+
+// This test verifies that integer value can be extracted.
+TEST(ElementValue, intValue) {
+    EXPECT_EQ(5, ElementValue<int>()(Element::create(5)));
+    EXPECT_THROW(ElementValue<int>()(Element::create("hola!")),
+                 TypeError);
+}
+
+// This test verifies that double value can be extracted.
+TEST(ElementValue, doubleValue) {
+    EXPECT_EQ(1.4, ElementValue<double>()(Element::create(1.4)));
+    EXPECT_THROW(ElementValue<double>()(Element::create("hola!")),
+                 TypeError);
+}
+
+// This test verifies that boolean value can be extracted.
+TEST(ElementValue, boolValue) {
+    EXPECT_TRUE(ElementValue<bool>()(Element::create(true)));
+    EXPECT_THROW(ElementValue<bool>()(Element::create("hola!")),
+                 TypeError);
+}
+
+// This test verifies that string value can be extracted.
+TEST(ElementValue, stringValue) {
+    EXPECT_EQ("hola!", ElementValue<std::string>()(Element::create("hola!")));
+    EXPECT_THROW(ElementValue<std::string>()(Element::create(false)),
+                 TypeError);
+}
+
+}