ChainGetter tests added

Lambdas/Lists/Chain/test/TestChainGetter.java

@@ -0,0 +1,43 @@
+import org.junit.Test;
+import org.mockito.Mockito;
+
+import java.sql.SQLException;
+import java.util.HashMap;
+import java.util.Map;
+
+public class TestChainGetter {
+
+    @Test
+    public void testChainGetterValid() {
+        testChainGetter(false);
+    }
+
+    @Test
+    public void testChainGetterError() {
+        testChainGetter(true);
+    }
+
+    public void testChainGetter(boolean shouldThrow) {
+        StatementInjector injector;
+        try {
+            injector = new StatementInjector(null, null, shouldThrow);
+        } catch (SQLException throwables) {
+            throwables.printStackTrace();
+            assert false; //Error in test infrastructure
+            return;
+        }
+        ChainGetter chainGetter = Mockito.spy(new ChainGetter(injector, "cognitoID"));
+        Map<String, Object> ignore = new HashMap<>();
+        Map<String, Object> body = TestInputUtils.addBody(ignore);
+        ignore.put("id", 1);    //in ChainGetter.java uses ignore map for id parameter
+
+        try {
+            Object rawIDReturn = chainGetter.conductAction(body, TestInputUtils.addQueryParams(ignore), "cognitoID");
+            assert !shouldThrow;
+            assert (rawIDReturn != null);
+        } catch (SQLException throwables) {
+            assert shouldThrow;
+            throwables.printStackTrace();
+        }
+    }
+}