Improve code quality in ResourceConfig

- Add unit test
- Refactor ResourceConfig class (break the public method into smaller private methods, remove code duplications)

Issue-ID: DCAEGEN2-2460
Signed-off-by: Joanna Jeremicz <joanna.jeremicz@nokia.com>
Change-Id: Ibfbac2b6d6ea4705a2139dee7d1bb801395790c9

3 files changed, 68 insertions, 39 deletions

diff --git a/mod/bpgenerator/src/main/java/org/onap/blueprintgenerator/models/blueprint/BpConstants.java b/mod/bpgenerator/src/main/java/org/onap/blueprintgenerator/models/blueprint/BpConstants.java
index ac14b47..d0d79a4 100644
--- a/mod/bpgenerator/src/main/java/org/onap/blueprintgenerator/models/blueprint/BpConstants.java
+++ b/mod/bpgenerator/src/main/java/org/onap/blueprintgenerator/models/blueprint/BpConstants.java
@@ -37,4 +37,7 @@ public final class BpConstants {
     public static final String TOSCA_DATATYPES_ROOT = "tosca.datatypes.Root";
     public static final String TOSCA_NODES_ROOT = "tosca.nodes.Root";
     public static final String TOSCA_SIMPLE_YAML = "tosca_simple_yaml_1_0_0";
+
+    public static final String MEMORY_LIMIT = "128Mi";
+    public static final String CPU_LIMIT = "250m";
 }
diff --git a/mod/bpgenerator/src/main/java/org/onap/blueprintgenerator/models/blueprint/ResourceConfig.java b/mod/bpgenerator/src/main/java/org/onap/blueprintgenerator/models/blueprint/ResourceConfig.java
index 030374f..3618be3 100644
--- a/mod/bpgenerator/src/main/java/org/onap/blueprintgenerator/models/blueprint/ResourceConfig.java
+++ b/mod/bpgenerator/src/main/java/org/onap/blueprintgenerator/models/blueprint/ResourceConfig.java
@@ -22,10 +22,11 @@
 package org.onap.blueprintgenerator.models.blueprint;
 
 import static org.onap.blueprintgenerator.common.blueprint.BlueprintHelper.createStringInput;
+import static org.onap.blueprintgenerator.models.blueprint.BpConstants.CPU_LIMIT;
+import static org.onap.blueprintgenerator.models.blueprint.BpConstants.MEMORY_LIMIT;
 
 import java.util.LinkedHashMap;
 import java.util.TreeMap;
-
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Getter;
@@ -59,69 +60,56 @@ import lombok.Setter;
 
 public class ResourceConfig {
 
-    /**
-     * The limits.
-     */
     private TreeMap<String, GetInput> limits;
-
-    /**
-     * The requests.
-     */
     private TreeMap<String, GetInput> requests;
 
 
     /**
      * Creates the resource config.
      *
-     * @param inps the inps
+     * @param inputs the inputs
      * @param name the name
      * @return the tree map
      */
     public TreeMap<String, LinkedHashMap<String, Object>> createResourceConfig(
-        TreeMap<String, LinkedHashMap<String, Object>> inps, String name) {
-
-        LinkedHashMap<String, Object> memoryLimit = createStringInput("128Mi");
-        LinkedHashMap<String, Object> cpuLimit = createStringInput("250m");
+        TreeMap<String, LinkedHashMap<String, Object>> inputs, String name) {
 
         String namePrefix = getNamePrefix(name);
 
-        //set the limits
-        TreeMap<String, GetInput> limits = new TreeMap<>();
+        limits = createInputs(inputs, namePrefix, "limit");
+        requests = createInputs(inputs, namePrefix, "request");
 
-        GetInput cpu = new GetInput();
-        cpu.setBpInputName(namePrefix + "cpu_limit");
-        limits.put("cpu", cpu);
-
-        GetInput memL = new GetInput();
-        memL.setBpInputName(namePrefix + "memory_limit");
-        limits.put("memory", memL);
-
-        inps.put(namePrefix + "cpu_limit", cpuLimit);
-        inps.put(namePrefix + "memory_limit", memoryLimit);
-
-        this.setLimits(limits);
+        return inputs;
+    }
 
-        //set the requests
-        TreeMap<String, GetInput> requests = new TreeMap<>();
+    private TreeMap<String, GetInput> createInputs(TreeMap<String, LinkedHashMap<String, Object>> inputs,
+        String namePrefix,
+        String inputType) {
 
-        GetInput cpuR = new GetInput();
-        cpuR.setBpInputName(namePrefix + "cpu_request");
-        requests.put("cpu", cpuR);
+        LinkedHashMap<String, Object> memoryLimit = createStringInput(MEMORY_LIMIT);
+        LinkedHashMap<String, Object> cpuLimit = createStringInput(CPU_LIMIT);
 
-        GetInput memR = new GetInput();
-        memR.setBpInputName(namePrefix + "memory_request");
-        requests.put("memory", memR);
+        final String cpuKey = namePrefix + "cpu_" + inputType;
+        final String memoryKey = namePrefix + "memory_" + inputType;
+        TreeMap<String, GetInput> inps = new TreeMap<>();
 
-        inps.put(namePrefix + "cpu_request", cpuLimit);
-        inps.put(namePrefix + "memory_request", memoryLimit);
+        insertInput("cpu", cpuKey, inps);
+        insertInput("memory", memoryKey, inps);
 
-        this.setRequests(requests);
+        inputs.put(cpuKey, cpuLimit);
+        inputs.put(memoryKey, memoryLimit);
 
         return inps;
     }
 
+    private void insertInput(String type, String name, TreeMap<String, GetInput> inputs) {
+        GetInput input = new GetInput();
+        input.setBpInputName(name);
+        inputs.put(type, input);
+    }
+
     private String getNamePrefix(String name) {
-        return name.isEmpty() ? "" : name + "_";
+        return (name == null || name.isEmpty()) ? "" : name + "_";
     }
 }
 
diff --git a/mod/bpgenerator/src/test/java/org/onap/blueprintgenerator/models/blueprint/ResourceConfigTest.java b/mod/bpgenerator/src/test/java/org/onap/blueprintgenerator/models/blueprint/ResourceConfigTest.java
new file mode 100644
index 0000000..cf12da1
--- /dev/null
+++ b/mod/bpgenerator/src/test/java/org/onap/blueprintgenerator/models/blueprint/ResourceConfigTest.java
@@ -0,0 +1,38 @@
+/*============LICENSE_START=======================================================
+ org.onap.dcae
+ ================================================================================
+ 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.blueprintgenerator.models.blueprint;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.LinkedHashMap;
+import java.util.TreeMap;
+import org.junit.Test;
+
+public class ResourceConfigTest {
+
+    @Test
+    public void createResourceConfig() {
+        TreeMap<String, LinkedHashMap<String, Object>> result = new ResourceConfig()
+            .createResourceConfig(new TreeMap<>(), "demo");
+
+        String expectedResult = "{demo_cpu_limit={type=string, default=250m}, demo_cpu_request={type=string, default=250m}, demo_memory_limit={type=string, default=128Mi}, demo_memory_request={type=string, default=128Mi}}";
+        assertEquals(expectedResult, result.toString());
+    }
+}