debug root fixed column variadic issue

Author: hero78119

Cargo.lock

@@ -24,6 +24,7 @@ rand_chacha = "0.3"
 paste = "1.0"
 rand_xorshift = "0.3.0"
 rand_core = "0.6.4"
+itertools = "0.10"
 mock = { path = "../mock" }
 
 [dev-dependencies]

integration-tests/Cargo.toml

@@ -25,6 +25,7 @@ use halo2_proofs::{
         },
     },
 };
+use itertools::Itertools;
 use lazy_static::lazy_static;
 use mock::TestContext;
 use rand_chacha::rand_core::SeedableRng;
@@ -383,6 +384,24 @@ impl<C: SubCircuit<Fr> + Circuit<Fr>> IntegrationTest<C> {
 
         match self.root_fixed.clone() {
             Some(prev_fixed) => {
+                fixed.iter().enumerate().zip_eq(prev_fixed.iter()).for_each(
+                    |((index, col1), col2)| {
+                        if !col1.eq(col2) {
+                            println!("on column index {} not equal", index);
+                            col1.iter().enumerate().zip_eq(col2.iter()).for_each(
+                                |((index, cellv1), cellv2)| {
+                                    assert!(
+                                        cellv1.eq(&cellv2),
+                                        "cellv1 {:?} != cellv2 {:?} on index {}",
+                                        cellv1,
+                                        cellv2,
+                                        index
+                                    );
+                                },
+                            );
+                        }
+                    },
+                );
                 assert!(
                     fixed.eq(&prev_fixed),
                     "root circuit fixed columns are not constant for different witnesses"