Modify table_with_id_zero_but_no_zero_entry test to catch a has_zero_…

…entry bug

kimchi/src/tests/lookup.rs

@@ -593,20 +593,22 @@ fn test_runtime_table_only_one_table_with_id_zero_with_non_zero_entries_random_v
 #[test]
 #[should_panic]
 fn test_lookup_with_a_table_with_id_zero_but_no_zero_entry() {
-    let max_len: u32 = 100u32;
+    let max_len: u32 = 2u32;
     let seed: [u8; 32] = thread_rng().gen();
     eprintln!("Seed: {:?}", seed);
     let mut rng = StdRng::from_seed(seed);
 
     // Non zero-length table
     let len = 1u32 + rng.gen_range(0u32..max_len);
+    // Table id is 0
     let table_id: i32 = 0;
-    // No index 0 in the table.
+    // Potentially 0 index in the table.
     let indices: Vec<Fp> = (0..len)
-        .map(|_| 1 + rng.gen_range(0u32..max_len))
+        .map(|_| rng.gen_range(0u32..max_len))
         .map(Into::into)
         .collect();
-    // No zero value
+    // But no zero value. So we'll get rows with zeroes that are not
+    // full-zero-rows.
     let values: Vec<Fp> = (0..len)
         .map(|_| rng.gen_range(1u32..max_len))
         .map(Into::into)