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//! End-to-end tests for container support in the term/proof encoding.
use egglog::EGraph;
/// Term-only: a `(Vec Math)` column should canonicalize its elements during
/// rebuilding. After unioning two Math terms, the two vecs `(vec-of A)` and
/// `(vec-of B)` canonicalize to the same vec, so the constructors holding them
/// become congruent.
#[test]
fn vec_rebuild_term_only() {
let mut egraph = EGraph::new_with_term_encoding();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(sort MathVec (Vec Math))
(constructor Holds (MathVec) Math)
(Holds (vec-of (A)))
(Holds (vec-of (B)))
(union (A) (B))
(run 1)
(check (= (Holds (vec-of (A))) (Holds (vec-of (B)))))
"#,
)
.unwrap();
}
/// Term-only: a collapsing `(Set Math)` column. After unioning A and B, the
/// set `{A, B}` collapses to a singleton, matching `{B}` (a one-element set),
/// so the two holders become congruent.
#[test]
fn set_rebuild_collapse_term_only() {
let mut egraph = EGraph::new_with_term_encoding();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(sort MathSet (Set Math))
(constructor Holds (MathSet) Math)
(Holds (set-of (A) (B)))
(Holds (set-of (B)))
(union (A) (B))
(run 1)
(check (= (Holds (set-of (A) (B))) (Holds (set-of (B)))))
"#,
)
.unwrap();
}
/// Term-only: a `(Map Math Math)` column canonicalizes keys and values.
#[test]
fn map_rebuild_term_only() {
let mut egraph = EGraph::new_with_term_encoding();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(sort MathMap (Map Math Math))
(constructor Holds (MathMap) Math)
(Holds (map-insert (map-empty) (A) (A)))
(Holds (map-insert (map-empty) (B) (B)))
(union (A) (B))
(run 1)
(check (= (Holds (map-insert (map-empty) (A) (A)))
(Holds (map-insert (map-empty) (B) (B)))))
"#,
)
.unwrap();
}
/// Term-only: a `(MultiSet Math)` column canonicalizes elements.
#[test]
fn multiset_rebuild_term_only() {
let mut egraph = EGraph::new_with_term_encoding();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(sort MathMS (MultiSet Math))
(constructor Holds (MathMS) Math)
(Holds (multiset-of (A)))
(Holds (multiset-of (B)))
(union (A) (B))
(run 1)
(check (= (Holds (multiset-of (A))) (Holds (multiset-of (B)))))
"#,
)
.unwrap();
}
/// Term-only: a nested `(Vec (Vec Math))` column. Canonicalizing the deep
/// element must propagate through the inner vec to the outer vec.
#[test]
fn nested_vec_rebuild_term_only() {
let mut egraph = EGraph::new_with_term_encoding();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(sort MathVec (Vec Math))
(sort MathVecVec (Vec MathVec))
(constructor Holds (MathVecVec) Math)
(Holds (vec-of (vec-of (A))))
(Holds (vec-of (vec-of (B))))
(union (A) (B))
(run 1)
(check (= (Holds (vec-of (vec-of (A)))) (Holds (vec-of (vec-of (B))))))
"#,
)
.unwrap();
}
/// Proof mode: a nested `(Vec (Vec Math))` column, with proof checking.
#[test]
fn nested_vec_rebuild_proof_mode() {
let mut egraph = EGraph::new_with_proofs().with_proof_testing();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(sort MathVec (Vec Math))
(sort MathVecVec (Vec MathVec))
(constructor Holds (MathVecVec) Math)
(Holds (vec-of (vec-of (A))))
(Holds (vec-of (vec-of (B))))
(union (A) (B))
(run 1)
(check (= (Holds (vec-of (vec-of (A)))) (Holds (vec-of (vec-of (B))))))
"#,
)
.unwrap();
}
/// Proof mode: a `(Pair Math Math)` column. The container rebuild produces a
/// `Congr` proof, and `with_proof_testing` extracts and checks the proof for
/// the `check`.
#[test]
fn pair_rebuild_proof_mode() {
let mut egraph = EGraph::new_with_proofs().with_proof_testing();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(sort MathPair (Pair Math Math))
(constructor Holds (MathPair) Math)
(Holds (pair (A) (A)))
(Holds (pair (B) (B)))
(union (A) (B))
(run 1)
(check (= (Holds (pair (A) (A))) (Holds (pair (B) (B)))))
"#,
)
.unwrap();
}
/// Proof mode: a `(Vec Math)` column.
#[test]
fn vec_rebuild_proof_mode() {
let mut egraph = EGraph::new_with_proofs().with_proof_testing();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(sort MathVec (Vec Math))
(constructor Holds (MathVec) Math)
(Holds (vec-of (A)))
(Holds (vec-of (B)))
(union (A) (B))
(run 1)
(check (= (Holds (vec-of (A))) (Holds (vec-of (B)))))
"#,
)
.unwrap();
}
/// Term-only: a `(Pair Math Math)` column should canonicalize both elements.
#[test]
fn pair_rebuild_term_only() {
let mut egraph = EGraph::new_with_term_encoding();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(sort MathPair (Pair Math Math))
(constructor Holds (MathPair) Math)
(Holds (pair (A) (A)))
(Holds (pair (B) (B)))
(union (A) (B))
(run 1)
(check (= (Holds (pair (A) (A))) (Holds (pair (B) (B)))))
"#,
)
.unwrap();
}
/// Proof mode: a `(MultiSet Math)` merge. Counts are preserved as repeated
/// elements, so canonicalization is arity-preserving and the flat `Congr`
/// chain checks.
#[test]
fn multiset_rebuild_proof_mode() {
let mut egraph = EGraph::new_with_proofs().with_proof_testing();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(sort MathMS (MultiSet Math))
(constructor Holds (MathMS) Math)
(Holds (multiset-of (A)))
(Holds (multiset-of (B)))
(union (A) (B))
(run 1)
(check (= (Holds (multiset-of (A))) (Holds (multiset-of (B)))))
"#,
)
.unwrap();
}
/// Proof mode: a `(Set Math)` rebuild that does NOT collapse (the changed
/// element stays distinct from the others), so arity is preserved and it
/// checks.
#[test]
fn set_rebuild_noncollapse_proof_mode() {
let mut egraph = EGraph::new_with_proofs().with_proof_testing();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(constructor C () Math)
(sort MathSet (Set Math))
(constructor Holds (MathSet) Math)
(Holds (set-of (A) (C)))
(Holds (set-of (B) (C)))
(union (A) (B))
(run 1)
(check (= (Holds (set-of (A) (C))) (Holds (set-of (B) (C)))))
"#,
)
.unwrap();
}
/// Proof mode: a `(Map Math Math)` rebuild that does NOT collapse (a value
/// changes, keys stay distinct), so arity is preserved and it checks.
#[test]
fn map_rebuild_noncollapse_proof_mode() {
let mut egraph = EGraph::new_with_proofs().with_proof_testing();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(constructor K () Math)
(sort MathMap (Map Math Math))
(constructor Holds (MathMap) Math)
(Holds (map-insert (map-empty) (K) (A)))
(Holds (map-insert (map-empty) (K) (B)))
(union (A) (B))
(run 1)
(check (= (Holds (map-insert (map-empty) (K) (A)))
(Holds (map-insert (map-empty) (K) (B)))))
"#,
)
.unwrap();
}
/// Proof mode: a collapsing `(Set Math)`. Unioning A and B collapses `{A,B}` to
/// a singleton; the `Congr` chain rebuilds to the (non-canonical) `set-of(A,A)`
/// and the container normalization gives `set-of(A)`, matching `{A}`.
#[test]
fn set_rebuild_collapse_proof_mode() {
let mut egraph = EGraph::new_with_proofs().with_proof_testing();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(sort MathSet (Set Math))
(constructor Holds (MathSet) Math)
(Holds (set-of (A) (B)))
(Holds (set-of (B)))
(union (A) (B))
(run 1)
(check (= (Holds (set-of (A) (B))) (Holds (set-of (B)))))
"#,
)
.unwrap();
}
/// Proof mode: a `(Set Math)` rebuild where a leader sorts to a different slot
/// (reorder without collapse). `A`'s `:cost` forces the merged class to
/// extract as `(E)`, so `{(A), (C)}` rebuilds to `{(C), (E)}`: the changed
/// element moves from slot 0 to slot 1 and the container normalization
/// re-sorts the raw `Congr` result to canonical order.
#[test]
fn set_rebuild_reorder_proof_mode() {
let mut egraph = EGraph::new_with_proofs().with_proof_testing();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math :cost 100)
(constructor C () Math)
(constructor E () Math)
(sort MathSet (Set Math))
(constructor Holds (MathSet) Math)
(Holds (set-of (A) (C)))
(Holds (set-of (E) (C)))
(union (A) (E))
(run 1)
(check (= (Holds (set-of (A) (C))) (Holds (set-of (E) (C)))))
"#,
)
.unwrap();
}
/// Proof mode: a `(MultiSet Math)` merge that adds counts (`{A:2}` after
/// unioning two distinct elements). Multiplicities are preserved as repeated
/// elements, so the normalization just re-sorts.
#[test]
fn multiset_rebuild_merge_counts_proof_mode() {
let mut egraph = EGraph::new_with_proofs().with_proof_testing();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(sort MathMS (MultiSet Math))
(constructor Holds (MathMS) Math)
(Holds (multiset-of (A) (A)))
(Holds (multiset-of (B) (B)))
(union (A) (B))
(run 1)
(check (= (Holds (multiset-of (A) (A))) (Holds (multiset-of (B) (B)))))
"#,
)
.unwrap();
}
/// Proof mode: a collapsing `(Map Math Math)` — two keys merge into one
/// (last-write-wins). The flat `map-of` term form makes the rebuild Congr
/// indices flat, and the container normalization re-sorts and merges keys (last-write-wins).
#[test]
fn map_rebuild_collapse_proof_mode() {
let mut egraph = EGraph::new_with_proofs().with_proof_testing();
egraph
.parse_and_run_program(
None,
r#"
(sort Math)
(constructor A () Math)
(constructor B () Math)
(constructor V () Math)
(sort MathMap (Map Math Math))
(constructor Holds (MathMap) Math)
(Holds (map-insert (map-insert (map-empty) (A) (V)) (B) (V)))
(Holds (map-insert (map-empty) (B) (V)))
(union (A) (B))
(run 1)
(check (= (Holds (map-insert (map-insert (map-empty) (A) (V)) (B) (V)))
(Holds (map-insert (map-empty) (B) (V)))))
"#,
)
.unwrap();
}