fix: ensure doctests are run in GitHub Actions (#2412)

Signed-off-by: R. Tyler Croy <rtyler@brokenco.de>

Signed-off-by: R. Tyler Croy <rtyler@brokenco.de>

Author: rtyler

.github/workflows/build.yml

@@ -98,6 +98,7 @@ jobs:
           pushd kernel
           echo "Testing with $(cargo msrv show --output-format minimal)"
           cargo +$(cargo msrv show --output-format minimal) nextest run --locked
+          cargo +$(cargo msrv show --output-format minimal) test --doc
   docs:
     runs-on: ubuntu-latest
     env:

kernel/src/engine_data.rs

@@ -505,6 +505,9 @@ pub trait RowVisitor {
 ///   fn apply_selection_vector(self: Box<Self>, selection_vector: Vec<bool>) -> DeltaResult<Box<dyn EngineData>> {
 ///     todo!() // filter out unselected rows and return the new set of data
 ///   }
+///   fn has_field(&self, name: &ColumnName) -> bool {
+///     todo!() // determine whether the field exists in the data
+///   }
 /// }
 /// ```
 pub trait EngineData: AsAny {