| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 74 of 74 | 0% | 8 of 8 | 0% | 8 | 8 | 18 | 18 | 4 | 4 |
| join(RubyArray, RubyString) | | 0% | | 0% | 3 | 3 | 8 | 8 | 1 | 1 |
| join(RubyArray, UndefinedPlaceholder) | | 0% | | 0% | 3 | 3 | 6 | 6 | 1 | 1 |
| ArrayNodes.JoinNode(RubyContext, SourceSection) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| ArrayNodes.JoinNode(ArrayNodes.JoinNode) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 |