A consultant wrote a Opportunity Trigger but no code coverage. Any help with developing a test class would be appreciated, so I could deploy the Trigger below to production.

trigger Opp_Trigger on Opportunity (after insert, after update) {
    
    
    if ((!Util.DoNotRunTrigger) && (Trigger.IsAfter) && (!Archtics.HasSentArchticsCreate))
    {
        /* create in Archtics */
        set<Id> accids = new set<Id>();
        set<Id> ownerids = new set<Id>();
        
        for (Opportunity o : Trigger.new)
        {
            Opportunity oldopp;
            if (Trigger.IsUpdate) oldopp = Trigger.oldmap.get(o.Id);
            
            accids.add(o.AccountId);
            ownerids.add(o.OwnerId);
        } 
        
        map<Id, Account> accid2accmap = new map<Id, Account>();
        if (accids.size() > 0)
        {
            accid2accmap = new map<Id, Account>([select Id, 
                Update_in_Archtics_Wizards__c, Update_in_Archtics_Mystics__c, 
                Update_in_Archtics_Capitals__c, Update_in_Archtics_MSE__c,
                Create_in_Archtics_Wizards__c, Create_in_Archtics_Mystics__c, 
                Create_in_Archtics_Capitals__c,Create_in_Archtics_MSE__c, 
                Acct_Rep_ID_Capitals__c, Acct_Rep_ID_Mystics__c, Acct_Rep_ID_Wizards__c,
                Archtics_ID_Wizards__c, Archtics_ID_Mystics__c, Archtics_ID_Caps__c,Archtics_ID_MSE__c
                from Account
                where Id in :accids]);
        }
        
        map<Id, User> userid2usermap = new map<Id, User>();
        if (ownerids.size() > 0)
        {
            userid2usermap = new map<Id, User>([
                select Id, Archtics_Rep_ID_Wiz__c, Archtics_Rep_ID_Mystics__c, Archtics_Rep_ID_Caps__c
                from User
                where Id in :ownerids]);
        }
        
       // set<Id> capitalsaccids = new set<Id>();
        //set<Id> mysticsaccids = new set<Id>();
    //  set<Id> wizardsaccids = new set<Id>();
        set<Id> MSEaccids = new set<Id>();
        
        for (Opportunity o : Trigger.new)
        {
            if ((!o.Name.contains('Auto-created Opportunity'))
                && (o.Product_Category__c != null))
            {
                if (o.Product_Category__c.contains('Caps'))
                {
system.debug('\n\n42 caps found');          
                    Account thisacc = accid2accmap.get(o.AccountID);
                    
                    if (   (thisacc != null)
                           && (thisacc.Archtics_ID_MSE__c == null)
                           && ( (o.StageName=='Completed Sale') || (o.StageName=='Hot') || (o.StageName=='Comp Requested') )    
                        )
                    {
                        thisacc.Acct_Rep_ID_Capitals__c = userid2usermap.get(o.OwnerId).Archtics_Rep_ID_Caps__c;
                        accid2accmap.put(o.AccountId, thisacc);
                        //capitalsaccids.add(o.AccountId);
//                      thisacc.Acct_Rep_ID_MSE__c = userid2usermap.get(o.OwnerId).Archtics_Rep_ID_MSE__c;
                        MSEaccids.add(o.AccountId);
                    }
                }
                if ((o.Product_Category__c.contains('Wizards') || (o.Product_Category__c.contains('Valor')
                    || (o.Product_Category__c.contains('Family Shows/Events and Concerts')))))
                {
                
                    Account thisacc = accid2accmap.get(o.AccountID);
                    
                    if ((thisacc != null)
                        && (thisacc.Archtics_ID_MSE__c == null)
                        && ( (o.StageName=='Completed Sale') || (o.StageName=='Hot') || (o.StageName=='Comp Requested') )
                        ) 
                    {
                        thisacc.Acct_Rep_ID_Wizards__c = userid2usermap.get(o.OwnerId).Archtics_Rep_ID_Wiz__c;
                        accid2accmap.put(o.AccountId, thisacc);
                        MSEaccids.add(o.AccountId);
                    }
                }
                if (o.Product_Category__c.contains('Mystics'))
                {
                    Account thisacc = accid2accmap.get(o.AccountID);
                    
                    if ((thisacc != null)
                        && (thisacc.Archtics_ID_MSE__c == null)
                        && ( (o.StageName=='Completed Sale') || (o.StageName=='Hot') ||(o.StageName=='Comp Requested') )
                        )
                    {
                        thisacc.Acct_Rep_ID_Mystics__c = userid2usermap.get(o.OwnerId).Archtics_Rep_ID_Mystics__c;
                        accid2accmap.put(o.AccountId, thisacc);
                        MSEaccids.add(o.AccountId); // mystics now created in MSE as well
                    }
                }
            }
        }
        
        if (accid2accmap.size() > 0)
            update accid2accmap.values();
        
        //if (capitalsaccids.size() > 0)
            //Archtics.createFuture(capitalsaccids, 'Capitals');
        //if (wizardsaccids.size() > 0)
            //Archtics.createFuture(wizardsaccids, 'Wizards');
         
        //changed from wizardsaccids to MSEaccids 130711 JN
        if (MSEaccids.size() > 0)
            Archtics.createAccountsInArchtics(MSEaccids, 'MSE');
        Archtics.HasSentArchticsCreate = TRUE;
    } //end if IsAfter
}

I need Help converting 2016-01-08T19:00:00 to 01/08/2016

I want to truncate the time (19:00:00 )

This is what I wrote:
 

<apex:column headerValue="Event Date">
                           <apex:outputText value="{0,date,MM'/'dd'/'yyyy}">
                            <apex:param value="{!listMysticsmailMap[m].eventDateTime}" />
                        </apex:outputText>
                     </apex:column>

However, I get the following error: Content cannot be displayed: The value attribute on <apex:outputText> is not in a valid format. It must be a positive number, and of type Number, Date, Time, or Choice.

I then tried
 

<apex:outputText value="{0,date,MM/dd/yyyy}">

That didn't work either
 

To give you some background, Contact is the parent object and Concept_Email__c is the child object. 

 I am trying to write a tirgger that would update the
The arctics ID which is named "Concept_email_Arctics_ID_MSE__c" on Concept_Email__c object when it is changed 

Below is the code snippet that I've started. Any help with fixing the trigger below will be appreciated.

As of now I am getting a syntactical error "Invalid field contact for sObject contact"

 

trigger UpdateArchticIDEmail on Contact (After Update) {
for(Contact cont: Trigger.New)
 {
 //Select Arctics ID from Contact__c object
 Contact ArchID=[select Archtics_ID__c from Contact where id=:cont.Contact];
 //Select Arctics ID from Concept_Email__c  object
 list<Concept_Email__c> cec=[select Concept_email_Arctics_ID_MSE__c from Concept_Email__c WHERE Contact=:cont.id];
 List<Concept_Email__c> listemail=new List<Concept_Email__c>();
 for(Concept_Email__c uid:cec)
 {
 //Assign Updated Details from Contact__c object to Concept_Email__c Object
 uid.Concept_email_Arctics_ID_MSE__c=ArchID.Archtics_ID__c;
 listemail.add(uid);
 }
 update listemail; 
 }
}

 

To give you some background, I have a parent object called Concept_Master_Contact__c and child object called Concept_Email__c

 I am trying to write a tirgger that would update the Unique_person ID on Concept_Email__c when it is changed in Concept_Master_Contact__c

Any help with fixing the trigger below will be appreciated. 

Problem: initial term of field expression must be a concrete sobject: List<Concept_Master_Contact>

trigger updateFields on Concept_Email__c (before update) {
    
    //The parent Object
    List<Concept_Master_Contact__c> conmast = new List<Concept_Master_Contact__c>();
    //The child object
    public List<Concept_Email__c> conemail{get;set;}
    
    for (Concept_Email__c obj: trigger.new){
    //if the Unique person ID changes on the parent object, change the person ID on the child object to match the parent object
    If (conemail.Unique_Person_ID__c != conmast.Unique_Person_ID__c){
            conmast.Unique_Person_ID__c = conemail.Unique_Person_ID__c;
        }
    }
    
}

A consultant wrote a Opportunity Trigger but no code coverage. Any help with developing a test class would be appreciated, so I could deploy the Trigger below to production.

trigger Opp_Trigger on Opportunity (after insert, after update) {
    
    
    if ((!Util.DoNotRunTrigger) && (Trigger.IsAfter) && (!Archtics.HasSentArchticsCreate))
    {
        /* create in Archtics */
        set<Id> accids = new set<Id>();
        set<Id> ownerids = new set<Id>();
        
        for (Opportunity o : Trigger.new)
        {
            Opportunity oldopp;
            if (Trigger.IsUpdate) oldopp = Trigger.oldmap.get(o.Id);
            
            accids.add(o.AccountId);
            ownerids.add(o.OwnerId);
        } 
        
        map<Id, Account> accid2accmap = new map<Id, Account>();
        if (accids.size() > 0)
        {
            accid2accmap = new map<Id, Account>([select Id, 
                Update_in_Archtics_Wizards__c, Update_in_Archtics_Mystics__c, 
                Update_in_Archtics_Capitals__c, Update_in_Archtics_MSE__c,
                Create_in_Archtics_Wizards__c, Create_in_Archtics_Mystics__c, 
                Create_in_Archtics_Capitals__c,Create_in_Archtics_MSE__c, 
                Acct_Rep_ID_Capitals__c, Acct_Rep_ID_Mystics__c, Acct_Rep_ID_Wizards__c,
                Archtics_ID_Wizards__c, Archtics_ID_Mystics__c, Archtics_ID_Caps__c,Archtics_ID_MSE__c
                from Account
                where Id in :accids]);
        }
        
        map<Id, User> userid2usermap = new map<Id, User>();
        if (ownerids.size() > 0)
        {
            userid2usermap = new map<Id, User>([
                select Id, Archtics_Rep_ID_Wiz__c, Archtics_Rep_ID_Mystics__c, Archtics_Rep_ID_Caps__c
                from User
                where Id in :ownerids]);
        }
        
       // set<Id> capitalsaccids = new set<Id>();
        //set<Id> mysticsaccids = new set<Id>();
    //  set<Id> wizardsaccids = new set<Id>();
        set<Id> MSEaccids = new set<Id>();
        
        for (Opportunity o : Trigger.new)
        {
            if ((!o.Name.contains('Auto-created Opportunity'))
                && (o.Product_Category__c != null))
            {
                if (o.Product_Category__c.contains('Caps'))
                {
system.debug('\n\n42 caps found');          
                    Account thisacc = accid2accmap.get(o.AccountID);
                    
                    if (   (thisacc != null)
                           && (thisacc.Archtics_ID_MSE__c == null)
                           && ( (o.StageName=='Completed Sale') || (o.StageName=='Hot') || (o.StageName=='Comp Requested') )    
                        )
                    {
                        thisacc.Acct_Rep_ID_Capitals__c = userid2usermap.get(o.OwnerId).Archtics_Rep_ID_Caps__c;
                        accid2accmap.put(o.AccountId, thisacc);
                        //capitalsaccids.add(o.AccountId);
//                      thisacc.Acct_Rep_ID_MSE__c = userid2usermap.get(o.OwnerId).Archtics_Rep_ID_MSE__c;
                        MSEaccids.add(o.AccountId);
                    }
                }
                if ((o.Product_Category__c.contains('Wizards') || (o.Product_Category__c.contains('Valor')
                    || (o.Product_Category__c.contains('Family Shows/Events and Concerts')))))
                {
                
                    Account thisacc = accid2accmap.get(o.AccountID);
                    
                    if ((thisacc != null)
                        && (thisacc.Archtics_ID_MSE__c == null)
                        && ( (o.StageName=='Completed Sale') || (o.StageName=='Hot') || (o.StageName=='Comp Requested') )
                        ) 
                    {
                        thisacc.Acct_Rep_ID_Wizards__c = userid2usermap.get(o.OwnerId).Archtics_Rep_ID_Wiz__c;
                        accid2accmap.put(o.AccountId, thisacc);
                        MSEaccids.add(o.AccountId);
                    }
                }
                if (o.Product_Category__c.contains('Mystics'))
                {
                    Account thisacc = accid2accmap.get(o.AccountID);
                    
                    if ((thisacc != null)
                        && (thisacc.Archtics_ID_MSE__c == null)
                        && ( (o.StageName=='Completed Sale') || (o.StageName=='Hot') ||(o.StageName=='Comp Requested') )
                        )
                    {
                        thisacc.Acct_Rep_ID_Mystics__c = userid2usermap.get(o.OwnerId).Archtics_Rep_ID_Mystics__c;
                        accid2accmap.put(o.AccountId, thisacc);
                        MSEaccids.add(o.AccountId); // mystics now created in MSE as well
                    }
                }
            }
        }
        
        if (accid2accmap.size() > 0)
            update accid2accmap.values();
        
        //if (capitalsaccids.size() > 0)
            //Archtics.createFuture(capitalsaccids, 'Capitals');
        //if (wizardsaccids.size() > 0)
            //Archtics.createFuture(wizardsaccids, 'Wizards');
         
        //changed from wizardsaccids to MSEaccids 130711 JN
        if (MSEaccids.size() > 0)
            Archtics.createAccountsInArchtics(MSEaccids, 'MSE');
        Archtics.HasSentArchticsCreate = TRUE;
    } //end if IsAfter
}

I need Help converting 2016-01-08T19:00:00 to 01/08/2016

I want to truncate the time (19:00:00 )

This is what I wrote:
 

<apex:column headerValue="Event Date">
                           <apex:outputText value="{0,date,MM'/'dd'/'yyyy}">
                            <apex:param value="{!listMysticsmailMap[m].eventDateTime}" />
                        </apex:outputText>
                     </apex:column>

However, I get the following error: Content cannot be displayed: The value attribute on <apex:outputText> is not in a valid format. It must be a positive number, and of type Number, Date, Time, or Choice.

I then tried
 

<apex:outputText value="{0,date,MM/dd/yyyy}">

That didn't work either
 

To give you some background, Contact is the parent object and Concept_Email__c is the child object. 

 I am trying to write a tirgger that would update the
The arctics ID which is named "Concept_email_Arctics_ID_MSE__c" on Concept_Email__c object when it is changed 

Below is the code snippet that I've started. Any help with fixing the trigger below will be appreciated.

As of now I am getting a syntactical error "Invalid field contact for sObject contact"

 

trigger UpdateArchticIDEmail on Contact (After Update) {
for(Contact cont: Trigger.New)
 {
 //Select Arctics ID from Contact__c object
 Contact ArchID=[select Archtics_ID__c from Contact where id=:cont.Contact];
 //Select Arctics ID from Concept_Email__c  object
 list<Concept_Email__c> cec=[select Concept_email_Arctics_ID_MSE__c from Concept_Email__c WHERE Contact=:cont.id];
 List<Concept_Email__c> listemail=new List<Concept_Email__c>();
 for(Concept_Email__c uid:cec)
 {
 //Assign Updated Details from Contact__c object to Concept_Email__c Object
 uid.Concept_email_Arctics_ID_MSE__c=ArchID.Archtics_ID__c;
 listemail.add(uid);
 }
 update listemail; 
 }
}

 

To give you some background, I have a parent object called Concept_Master_Contact__c and child object called Concept_Email__c

 I am trying to write a tirgger that would update the Unique_person ID on Concept_Email__c when it is changed in Concept_Master_Contact__c

Any help with fixing the trigger below will be appreciated. 

Problem: initial term of field expression must be a concrete sobject: List<Concept_Master_Contact>

trigger updateFields on Concept_Email__c (before update) {
    
    //The parent Object
    List<Concept_Master_Contact__c> conmast = new List<Concept_Master_Contact__c>();
    //The child object
    public List<Concept_Email__c> conemail{get;set;}
    
    for (Concept_Email__c obj: trigger.new){
    //if the Unique person ID changes on the parent object, change the person ID on the child object to match the parent object
    If (conemail.Unique_Person_ID__c != conmast.Unique_Person_ID__c){
            conmast.Unique_Person_ID__c = conemail.Unique_Person_ID__c;
        }
    }
    
}