| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 26 of 857 | 96% | 27 of 182 | 85% | 27 | 106 | 7 | 222 | 0 | 11 |
| fieldType(Field) | | 86% | | 88% | 3 | 15 | 2 | 27 | 0 | 1 |
| toSubstraitProtoType(Field) | | 96% | | 90% | 3 | 18 | 3 | 55 | 0 | 1 |
| applyUnsignedIntegerLiteralVariation(Expression, int) | | 93% | | 70% | 6 | 11 | 1 | 12 | 0 | 1 |
| fieldType(Expression) | | 94% | | 60% | 4 | 6 | 1 | 8 | 0 | 1 |
| supportsType(ArrowType) | | 99% | | 86% | 6 | 24 | 0 | 22 | 0 | 1 |
| applyTypeVariations(Expression) | | 100% | | 88% | 4 | 19 | 0 | 47 | 0 | 1 |
| serialize(Expression) | | 100% | | 100% | 0 | 3 | 0 | 37 | 0 | 1 |
| applyLargeUtf8LiteralVariation(Expression) | | 100% | | 75% | 1 | 3 | 0 | 5 | 0 | 1 |
| timestampPrecision(ArrowType.Timestamp) | | 100% | | 100% | 0 | 4 | 0 | 5 | 0 | 1 |
| nullability(Field) | | 100% | | 100% | 0 | 2 | 0 | 1 | 0 | 1 |
| LanceSubstraitSerializer(Schema) | | 100% | n/a | 0 | 1 | 0 | 3 | 0 | 1 |