I have a couple of triggers on the Opportunity standard object (before and after update) which send an email and do a couple of field update.

I wrote a test class using Eclipse IDE. Once I run that test class I get 100% test coverage on both the triggers, however when I deploy it into my sandbox instance I get 0% on both.

Any advice ?

Below my class

@isTest(SeeAllData=true)
private class TestOpportunityApproval {

    static testMethod void myUnitTest() {
         
	Account account = new Account();
        account.name = 'Test Account';
        account.BillingCountry = 'myNewCountry';
        insert account;
        
        Pricebook2  standardPb = [select id, name, isActive from Pricebook2 where IsStandard = true limit 1];
        
        Pricebook2 pbk1 = new Pricebook2 (Name='Test Pricebook Entry 1',Description='Test Pricebook Entry 1', isActive=true);
		insert pbk1;

        Product2 prd1 = new Product2 (Name='Test Product Entry 1',Description='Test Product Entry 1',productCode = 'ABC',            isActive = true); 
		insert prd1;
		
		PricebookEntry pbe1 = new PricebookEntry (Product2ID=prd1.id,Pricebook2ID=standardPb.id,UnitPrice=50, isActive=true);
		insert pbe1;

		Opportunity opp = new Opportunity (Name='Test_class',StageName='Prospecting',CloseDate=Date.today(),Pricebook2Id = pbe1.Pricebook2Id, AccountId = account.id
		,Project_Type__c='eDiscovery',LeadSource='List',Type='New Customer - New Business',RejectionReason__c=null);
		insert opp;


		OpportunityLineItem lineItem1 = new OpportunityLineItem (OpportunityID=opp.id,PriceBookEntryID=pbe1.id, quantity=4, totalprice=200);
		insert lineItem1;
	        
	    test.startTest();
	          
	    opp.RejectionReason__c='This is a test message';
	    opp.StageName='Order Obtained';
	    update opp;
	    System.assertEquals(Opp.StageName,'Order Obtained');
	            
	    test.stopTest();
	    
	 }
}