handling issues 347,364 (#385)

* handling issues 347,364

* updating default for fleet items and adding specific error message when default is selected

* updating error message for checkFleet

* removing checkMethod info from fleet select entry

---------

Co-authored-by: Prathibha Datta Kumar <[email protected]>

Author: naraharip2017

src/main/java/com/amazon/jenkins/ec2fleet/EC2FleetCloud.java

@@ -23,6 +23,7 @@
 import hudson.slaves.NodeProvisioner;
 import hudson.util.FormValidation;
 import hudson.util.ListBoxModel;
+import hudson.util.ListBoxModel.Option;
 import jenkins.model.Jenkins;
 import net.sf.json.JSONObject;
 import org.apache.commons.lang.StringUtils;
@@ -977,6 +978,7 @@ public ListBoxModel doFillFleetItems(@QueryParameter final boolean showAllFleets
                                              @QueryParameter final String awsCredentialsId,
                                              @QueryParameter final String fleet) {
             final ListBoxModel model = new ListBoxModel();
+            model.add(0, new Option("- please select -", "", true));
             try {
                 for (final EC2Fleet EC2Fleet : EC2Fleets.all()) {
                     EC2Fleet.describe(
@@ -990,6 +992,14 @@ public ListBoxModel doFillFleetItems(@QueryParameter final boolean showAllFleets
             return model;
         }
 
+        public FormValidation doCheckFleet(@QueryParameter final String fleet) {
+            if (StringUtils.isEmpty(fleet)) {
+                return FormValidation.error("Please select a valid EC2 Fleet");
+            } else {
+                return FormValidation.ok();
+            }
+        }
+
         public FormValidation doTestConnection(
                 @QueryParameter final String awsCredentialsId,
                 @QueryParameter final String region,

src/test/java/com/amazon/jenkins/ec2fleet/EC2FleetCloudTest.java

@@ -27,6 +27,7 @@
 import hudson.slaves.ComputerConnector;
 import hudson.slaves.NodeProvisioner;
 import hudson.util.FormValidation;
+import hudson.util.FormValidation.Kind;
 import hudson.util.ListBoxModel;
 import jenkins.model.Jenkins;
 import jenkins.model.Nodes;
@@ -1892,7 +1893,8 @@ public void descriptorImpl_doFillFleetItems_returnEmptyListIfNoEmptyEC2Fleet() {
         ListBoxModel r = new EC2FleetCloud.DescriptorImpl().doFillFleetItems(
                 false, "", "", "", "");
 
-        assertEquals(0, r.size());
+        assertEquals(1, r.size());
+        assertEquals("", r.get(0).value);
     }
 
     @Test
@@ -1904,7 +1906,8 @@ public void descriptorImpl_doFillFleetItems_returnFleetsProvidedByAllEC2Fleets()
         ListBoxModel r = new EC2FleetCloud.DescriptorImpl().doFillFleetItems(
                 false, "", "", "", "");
 
-        assertEquals(0, r.size());
+        assertEquals(1, r.size());
+        assertEquals("", r.get(0).value);
         verify(ec2SpotFleet).describe("", "", "", r, "", false);
         verify(autoScalingGroupFleet).describe("", "", "", r, "", false);
     }
@@ -1921,7 +1924,21 @@ public void descriptorImpl_doFillFleetItems_returnEmptyListIfAnyException() {
         ListBoxModel r = new EC2FleetCloud.DescriptorImpl().doFillFleetItems(
                 false, "", "", "", "");
 
-        assertEquals(0, r.size());
+        assertEquals(1, r.size());
+        assertEquals("", r.get(0).value);
+    }
+
+    @Test
+    public void descriptorImpl_doCheckFleet_default() {
+        FormValidation formValidation = new EC2FleetCloud.DescriptorImpl().doCheckFleet("");
+        assertEquals(formValidation.kind, Kind.ERROR);
+    }
+
+    @Test
+    public void descriptorImpl_doCheckFleet_nonDefault() {
+        FormValidation formValidation = new EC2FleetCloud.DescriptorImpl().doCheckFleet("ASG1");
+        assertEquals(formValidation.kind, Kind.OK);
+
     }
 
     @Test