ContentDocumentTest Apex TestClass

ContentDocumentTest.java

@isTest
private class ContentDocumentTest {
  private static testMethod void testCreate() {
    ContentVersion contentVersion_1 = new ContentVersion(
      Title = 'Penguins',
      PathOnClient = 'Penguins.jpg',
      VersionData = Blob.valueOf('Test Content')
      IsMajorVersion = true
    );
    insert contentVersion_1;
    
    ContentVersion contentVersion_2 = [SELECT Id, Title, ContentDocumentId FROM ContentVersion WHERE Id = :contentVersion_1.Id LIMIT 1];
    List<ContentDocument> documents = [SELECT Id, Title, LatestPublishedVersionId FROM ContentDocument];
    System.assertEquals(documents.size(), 1);
    System.assertEquals(documents[0].Id, contentVersion_2.ContentDocumentId);
    System.assertEquals(documents[0].LatestPublishedVersionId, contentVersion_2.Id);
    System.assertEquals(documents[0].Title, contentVersion_2.Title);
  }
}