Function apply_transform

src/transform/tests/test_transforms.rs:267–297

(
    transform: T,
    catalog: &TestCatalog,
    input: &str,
)

}

fn apply_transform<T: mz_transform::Transform>(
    transform: T,
    catalog: &TestCatalog,
    input: &str,
) -> Result<String, String> {
    // Parse the relation, returning early on parse error.
    let mut relation = try_parse_mir(catalog, input)?;

    let mut features = mz_repr::optimize::OptimizerFeatures::default();
    // Apply a non-default feature flag to test the right implementation.
    features.enable_letrec_fixpoint_analysis = true;
    features.enable_dequadratic_eqprop_map = true;
    features.enable_eq_classes_withholding_errors = true;
    let typecheck_ctx = mz_transform::typecheck::empty_typechecking_context();
    let mut df_meta = DataflowMetainfo::default();
    let mut transform_ctx = mz_transform::TransformCtx::local(
        &features,
        &typecheck_ctx,
        &mut df_meta,
        None,
        Some(TEST_GLOBAL_ID),
    );

    // Apply the transformation, returning early on TransformError.
    transform
        .transform(&mut relation, &mut transform_ctx)
        .map_err(|e| format!("{}\n", e.to_string().trim()))?;

    // Serialize and return the transformed relation.
    Ok(relation.debug_explain(&ExplainConfig::default(), Some(catalog)))
}

fn parse_explain_config(mut flags: BTreeSet<String>) -> Result<ExplainConfig, String> {
    let result = ExplainConfig {