feat: implement exec_caller

crates/evm/src/instructions/environmental_information.cairo

@@ -35,7 +35,7 @@ impl EnvironmentInformationImpl of EnvironmentInformationTrait {
     /// Get caller address.
     /// # Specification: https://www.evm.codes/#33?fork=shanghai
     fn exec_caller(ref self: Machine) -> Result<(), EVMError> {
-        Result::Ok(())
+        self.stack.push(self.caller().into())
     }
 
     /// 0x34 - CALLVALUE

crates/evm/src/tests/test_instructions/test_comparison_operations.cairo

@@ -1687,7 +1687,7 @@ fn assert_sar(a: u256, b: u256, expected: u256) {
 
 #[test]
 #[available_gas(20000000)]
-fn test__exec_or__should_pop_0_and_1_and_push_0xCD__when_0_is_0x89_and_1_is_0xC5() {
+fn test_exec_or_should_pop_0_and_1_and_push_0xCD_when_0_is_0x89_and_1_is_0xC5() {
     //Given
     let mut machine = setup_machine();
     machine.stack.push(0x89);

crates/evm/src/tests/test_instructions/test_environment_information.cairo

@@ -42,13 +42,32 @@ fn test_address_nested_call() { // A (EOA) -(calls)-> B (smart contract) -(calls
 // ref: https://github.com/kkrt-labs/kakarot-ssj/issues/183
 }
 
+
+// *************************************************************************
+// 0x33: CALLER
+// *************************************************************************
+#[test]
+#[available_gas(5000000)]
+fn test_caller() {
+    // Given
+    let mut machine = setup_machine();
+
+    // When
+    machine.exec_caller();
+
+    // Then
+    assert(machine.stack.len() == 1, 'stack should have one element');
+    assert(machine.stack.peek().unwrap() == evm_address().into(), 'should be evm_address');
+}
+
+
 // *************************************************************************
 // 0x34: CALLVALUE
 // *************************************************************************
 
 #[test]
 #[available_gas(1200000)]
-fn test__exec_callvalue() {
+fn test_exec_callvalue() {
     // Given
     let mut machine = setup_machine();
 

crates/evm/src/tests/test_instructions/test_stop_and_arithmetic_operations.cairo

@@ -171,7 +171,7 @@ fn test_exec_sdiv_pos() {
 
 #[test]
 #[available_gas(20000000)]
-fn test__exec_sdiv_neg() {
+fn test_exec_sdiv_neg() {
     // Given
     let mut machine = setup_machine();
     machine.stack.push(BoundedInt::max()).unwrap();

crates/evm/src/tests/test_stack.cairo

@@ -16,7 +16,7 @@ fn test_stack_new_should_return_empty_stack() {
 
 #[test]
 #[available_gas(400000)]
-fn test__empty__should_return_if_stack_is_empty() {
+fn test_empty_should_return_if_stack_is_empty() {
     // Given
     let mut stack = StackTrait::new();
 
@@ -31,7 +31,7 @@ fn test__empty__should_return_if_stack_is_empty() {
 
 #[test]
 #[available_gas(350000)]
-fn test__len__should_return_the_length_of_the_stack() {
+fn test_len_should_return_the_length_of_the_stack() {
     // Given
     let mut stack = StackTrait::new();