From 7be7f4c9e56299944afb3c58df8b5b57f23bbe8a Mon Sep 17 00:00:00 2001
From: Stav Beno <stav@starkware.co>
Date: Tue, 10 Dec 2024 18:32:47 +0200
Subject: [PATCH] add adapter tests

---
 .../prover/src/input/state_transitions.rs     | 135 +++++++++++++++++-
 1 file changed, 132 insertions(+), 3 deletions(-)

diff --git a/stwo_cairo_prover/crates/prover/src/input/state_transitions.rs b/stwo_cairo_prover/crates/prover/src/input/state_transitions.rs
index d38fc50c..bd2e71df 100644
--- a/stwo_cairo_prover/crates/prover/src/input/state_transitions.rs
+++ b/stwo_cairo_prover/crates/prover/src/input/state_transitions.rs
@@ -637,6 +637,10 @@ fn is_small_mul(op0: MemoryValue, op1: MemoryValue) -> bool {
     })
 }
 
+// Ensures that instructions are correctly mapped with the adapter.
+// All components were checked except:
+// - `jmp rel [ap/fp + offset]`
+// - `jmp abs [[ap/fp + offset1] + offset2]`
 #[cfg(test)]
 mod tests {
     use cairo_lang_casm::casm;
@@ -675,6 +679,24 @@ mod tests {
         );
     }
 
+    #[test]
+    fn test_jmp_rel() {
+        let instructions = casm! {
+            jmp rel 2;
+            [ap] = [ap-1] + 3, ap++;
+        }
+        .instructions;
+
+        let input = input_from_plain_casm(instructions, false);
+        let casm_states_by_opcode = input.state_transitions.casm_states_by_opcode;
+        assert_eq!(
+            casm_states_by_opcode
+                .jump_opcode_is_rel_t_is_imm_t_is_double_deref_f
+                .len(),
+            1
+        );
+    }
+
     #[test]
     fn test_add_ap() {
         let instructions = casm! {
@@ -682,6 +704,7 @@ mod tests {
             [ap] = 12, ap++;
             ap += [ap -2];
             ap += [fp + 1];
+            ap += 1;
             [ap] = 1, ap++;
         }
         .instructions;
@@ -696,7 +719,13 @@ mod tests {
         );
         assert_eq!(
             casm_states_by_opcode
-                .add_ap_opcode_is_imm_f_op1_base_fp_f
+                .add_ap_opcode_is_imm_f_op1_base_fp_t
+                .len(),
+            1
+        );
+        assert_eq!(
+            casm_states_by_opcode
+                .add_ap_opcode_is_imm_t_op1_base_fp_f
                 .len(),
             1
         );
@@ -747,7 +776,7 @@ mod tests {
     }
 
     #[test]
-    fn test_jnz_taken() {
+    fn test_jnz_not_taken_ap() {
         let instructions = casm! {
             [ap] = 0, ap++;
             jmp rel 2 if [ap-1] != 0;
@@ -766,7 +795,27 @@ mod tests {
     }
 
     #[test]
-    fn test_jnz_not_taken() {
+    fn test_jnz_not_taken_fp() {
+        let instructions = casm! {
+            call rel 2;
+            [ap] = 0, ap++;
+            jmp rel 2 if [fp] != 0;
+            [ap] = 1, ap++;
+        }
+        .instructions;
+
+        let input = input_from_plain_casm(instructions, false);
+        let casm_states_by_opcode = input.state_transitions.casm_states_by_opcode;
+        assert_eq!(
+            casm_states_by_opcode
+                .jnz_opcode_is_taken_f_dst_base_fp_t
+                .len(),
+            1
+        );
+    }
+
+    #[test]
+    fn test_jnz_taken_fp() {
         let instructions = casm! {
             call rel 2;
             jmp rel 2 if [fp-1] != 0;
@@ -784,6 +833,25 @@ mod tests {
         );
     }
 
+    #[test]
+    fn test_jnz_taken_ap() {
+        let instructions = casm! {
+            [ap] = 5, ap++;
+            jmp rel 2 if [ap-1] != 0;
+            [ap] = 1, ap++;
+        }
+        .instructions;
+
+        let input = input_from_plain_casm(instructions, false);
+        let casm_states_by_opcode = input.state_transitions.casm_states_by_opcode;
+        assert_eq!(
+            casm_states_by_opcode
+                .jnz_opcode_is_taken_t_dst_base_fp_f
+                .len(),
+            1
+        );
+    }
+
     #[test]
     fn test_assert_equal() {
         let instructions = casm! {
@@ -824,6 +892,12 @@ mod tests {
             casm_states_by_opcode.add_opcode_is_small_t_is_imm_f.len(),
             1
         );
+        assert_eq!(
+            casm_states_by_opcode
+                .assert_eq_opcode_is_double_deref_f_is_imm_t
+                .len(),
+            2
+        );
         assert_eq!(
             casm_states_by_opcode.add_opcode_is_small_t_is_imm_t.len(),
             1
@@ -905,4 +979,59 @@ mod tests {
             1
         );
     }
+
+    #[test]
+    fn test_generic() {
+        let instructions = casm! {
+        [ap]=1, ap++;
+        [ap]=2, ap++;
+        jmp rel [ap-2] if [ap-1] != 0;
+        [ap]=1, ap++;
+        }
+        .instructions;
+
+        let input = input_from_plain_casm(instructions, false);
+        let casm_states_by_opcode = input.state_transitions.casm_states_by_opcode;
+        assert_eq!(casm_states_by_opcode.generic_opcode.len(), 1);
+    }
+
+    #[test]
+    fn test_ret() {
+        let instructions = casm! {
+        [ap] = 10, ap++;
+        call rel 4;
+        jmp rel 11;
+
+        jmp rel 4 if [fp-3] != 0;
+        jmp rel 6;
+        [ap] = [fp-3] + (-1), ap++;
+        call rel (-6);
+        ret;
+        }
+        .instructions;
+
+        let input = input_from_plain_casm(instructions, false);
+        let casm_states_by_opcode = input.state_transitions.casm_states_by_opcode;
+        assert_eq!(casm_states_by_opcode.ret_opcode.len(), 11);
+    }
+
+    #[test]
+    fn test_assert_eq_double_deref() {
+        let instructions = casm! {
+            call rel 2;
+            [ap] = 100, ap++;
+            [ap] = [[fp - 2] + 2], ap++;  // [fp - 2] is the old fp.
+            [ap] = 5;
+        }
+        .instructions;
+
+        let input = input_from_plain_casm(instructions, false);
+        let casm_states_by_opcode = input.state_transitions.casm_states_by_opcode;
+        assert_eq!(
+            casm_states_by_opcode
+                .assert_eq_opcode_is_double_deref_t_is_imm_f
+                .len(),
+            1
+        );
+    }
 }