1 files changed, 81 insertions, 0 deletions
diff --git a/src/test/java/org/onap/pnfsimulator/simulator/DbTemplateReaderTest.java b/src/test/java/org/onap/pnfsimulator/simulator/DbTemplateReaderTest.java
new file mode 100644
index 0000000..c3f85f5
--- /dev/null
+++ b/src/test/java/org/onap/pnfsimulator/simulator/DbTemplateReaderTest.java
@@ -0,0 +1,81 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Simulator
+ * ================================================================================
+ * Copyright (C) 2020 Nokia. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.pnfsimulator.simulator;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+import org.assertj.core.api.Assertions;
+import org.bson.Document;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.onap.pnfsimulator.template.Template;
+import org.onap.pnfsimulator.template.TemplateService;
+
+import java.io.IOException;
+import java.util.Optional;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class DbTemplateReaderTest {
+
+    public static final String SOME_TEMPLATE = "someTemplate";
+    public static final String KEY = "key";
+    public static final String VALUE = "value";
+    public static final long LMOD = 10L;
+    private TemplateService service;
+    private DbTemplateReader dbTemplateReader;
+
+    @BeforeEach
+    void setUp() {
+        this.service = mock(TemplateService.class);
+        this.dbTemplateReader = new DbTemplateReader(this.service, new Gson());
+    }
+
+    @Test
+    public void shouldReportErrorWhenTemplateDoesNotExistInTemplateService() {
+        // given
+        when(this.service.get(SOME_TEMPLATE)).thenReturn(Optional.empty());
+
+        // when/then
+        assertThrows(IOException.class,
+            () -> this.dbTemplateReader.readTemplate(SOME_TEMPLATE)
+        );
+    }
+
+    @Test
+    public void shouldReturnTemplateFromService() throws IOException {
+        // given
+        Template template = givenTemplate(SOME_TEMPLATE);
+        when(this.service.get(SOME_TEMPLATE)).thenReturn(Optional.of(template));
+
+        // when
+        final JsonObject someTemplate = this.dbTemplateReader.readTemplate(SOME_TEMPLATE);
+
+        // then
+        Assertions.assertThat(someTemplate).isNotNull();
+        Assertions.assertThat(someTemplate.get(KEY).getAsString()).isEqualTo(VALUE);
+    }
+
+    private Template givenTemplate(String templateName) {
+        return new Template(templateName, new Document(KEY, VALUE), LMOD);
+    }
+}