IUAINFRA-47 Add test for AudienceSecretRetrieverForSoapui

audience-retriever/src/test/java/net/ihe/gazelle/app/audienceretriever/adapter/AudienceSecretRetrieverForSoapuiTest.java

+package net.ihe.gazelle.app.audienceretriever.adapter;
+
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+class AudienceSecretRetrieverForSoapuiTest {
+
+    @Test
+    void retrieveSecretForAudienceTest() {
+        AudienceSecretRetrieverForSoapui audienceSecretRetrieverForSoapui = new AudienceSecretRetrieverForSoapui();
+        assertNull(audienceSecretRetrieverForSoapui.retrieveSecretForAudience("test"));
+    }
+
+
+}