ContentVersionテストデータ作成

contentVersion.cls

ContentVersion contentVersion = new ContentVersion(    
     Title = 'TEST'
    ,Description = 'TEST' 
    ,PathOnClient = 'myString' 
    ,VersionData = Blob.valueof('myString')
    ,FirstPublishLocationId = parentId
);
insert contentVersion;

getContentWorkspace.cls

// ParentId取得 
public ContentWorkspace getContentWorkspace() {
    SELECT
         Id
    FROM
        ContentWorkspace
    WHERE
        Name = 'workSpaceName'
    LIMIT 1
}