Improve code coverage

Issue-ID: AAF-1107
Signed-off-by: Zebek Bogumil <bogumil.zebek@nokia.com>
Change-Id: I117eefc86867f388509b56e19e6b1d0d78df9d0b

2 files changed, 68 insertions, 1 deletions

diff --git a/certServiceClient/src/main/java/org/onap/aaf/certservice/client/configuration/EnvProvider.java b/certServiceClient/src/main/java/org/onap/aaf/certservice/client/configuration/EnvProvider.java
index 25a152bf..1b8c3606 100644
--- a/certServiceClient/src/main/java/org/onap/aaf/certservice/client/configuration/EnvProvider.java
+++ b/certServiceClient/src/main/java/org/onap/aaf/certservice/client/configuration/EnvProvider.java
@@ -23,10 +23,14 @@ import java.util.Optional;
 
 public class EnvProvider {
     public Optional<String> readEnvVariable(String envVariableName) {
-        return Optional.ofNullable(System.getenv(envVariableName))
+        return Optional.ofNullable(getSystemEnv(envVariableName))
                 .filter(EnvProvider::isEnvPresent);
     }
 
+    String getSystemEnv(String envVariableName) {
+        return System.getenv(envVariableName);
+    }
+
     private static Boolean isEnvPresent(String envValue) {
         return !"".equals(envValue);
     }
diff --git a/certServiceClient/src/test/java/org/onap/aaf/certservice/client/configuration/EnvProviderTest.java b/certServiceClient/src/test/java/org/onap/aaf/certservice/client/configuration/EnvProviderTest.java
new file mode 100644
index 00000000..7ef921a1
--- /dev/null
+++ b/certServiceClient/src/test/java/org/onap/aaf/certservice/client/configuration/EnvProviderTest.java
@@ -0,0 +1,63 @@
+/*
+ * ============LICENSE_START=======================================================
+ * aaf-certservice-client
+ * ================================================================================
+ * 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.aaf.certservice.client.configuration;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+import java.util.Optional;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.when;
+
+class EnvProviderTest {
+    private static final String TEST_ENV = "testEnv";
+    private static final String TEST_ENV_VALUE = "prod";
+
+    private EnvProvider envProvider;
+
+    @BeforeEach
+    public void setUp(){
+         envProvider = Mockito.spy(EnvProvider.class);
+    }
+
+    @Test
+    public void shouldReturnSystemEnvVariableWhenItWasDefined(){
+        // given
+        when(envProvider.getSystemEnv(TEST_ENV)).thenReturn(TEST_ENV_VALUE);
+
+        // when
+        final Optional<String> testEnv = envProvider.readEnvVariable(TEST_ENV);
+
+        // then
+        assertThat(testEnv.isPresent()).isTrue();
+        assertThat(testEnv.get()).isEqualTo(TEST_ENV_VALUE);
+    }
+
+    @Test
+    public void shouldReportThatSystemEnvVariableIsNotPresentWhenItWasNotDefined(){
+        // when
+        final Optional<String> testEnv = envProvider.readEnvVariable(TEST_ENV);
+
+        // then
+        assertThat(testEnv.isPresent()).isFalse();
+    }
+}