Pretty-print and fix for state.

src/account.rs

@@ -59,7 +59,30 @@ pub struct StateDiff (BTreeMap<Address, AccountDiff>);
 
 impl fmt::Display for AccountDiff {
 	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-		write!(f, "...\n")
+		match self.nonce {
+			Diff::Born(ref x) => try!(write!(f, "#{}", x)),
+			Diff::Changed(ref pre, ref post) => try!(write!(f, "#{} ({} {} {})", post, pre, if pre > post {"-"} else {"+"}, *max(pre, post) - *	min(pre, post))),
+			_ => {},
+		}
+		match self.balance {
+			Diff::Born(ref x) => try!(write!(f, "${}", x)),
+			Diff::Changed(ref pre, ref post) => try!(write!(f, "${} ({} {} {})", post, pre, if pre > post {"-"} else {"+"}, *max(pre, post) - *min(pre, post))),
+			_ => {},
+		}
+		match self.code {
+			Diff::Born(ref x) => try!(write!(f, "@{}", x.pretty())),
+			_ => {},
+		}
+		try!(write!(f, "\n"));
+		for (k, dv) in self.storage.iter() {
+			match dv {
+				&Diff::Born(ref v) => try!(write!(f, "    +  {} => {}\n", k, v)),
+				&Diff::Changed(ref pre, ref post) => try!(write!(f, "    *  {} => {} (was {})\n", k, post, pre)),
+				&Diff::Died(_) => try!(write!(f, "    X  {}\n", k)),
+				_ => {},
+			}
+		}
+		Ok(())
 	}
 }
 
@@ -68,7 +91,7 @@ impl fmt::Display for Existance {
 		match self {
 			&Existance::Born => try!(write!(f, "+++")),
 			&Existance::Alive => try!(write!(f, "***")),
-			&Existance::Died => try!(write!(f, "---")),
+			&Existance::Died => try!(write!(f, "XXX")),
 		}
 		Ok(())
 	}

src/tests/state.rs

@@ -1,5 +1,6 @@
 use super::test_common::*;
 use state::*;
+use executive::*;
 use ethereum;
 
 pub fn map_h256_h256_from_json(json: &Json) -> BTreeMap<H256, H256> {
@@ -46,17 +47,17 @@ fn do_json_test(json_data: &[u8]) -> Vec<String> {
 		let post = pod_map_from_json(&test["post"]);
 		// TODO: read test["logs"]
 
-		println!("Transaction: {:?}", t);
-		println!("Env: {:?}", env);
+		//println!("Transaction: {:?}", t);
+		//println!("Env: {:?}", env);
 
 		let mut s = State::new_temp();
 		s.populate_from(pre);
 
-		s.apply(&env, engine.deref(), &t).unwrap();
+		Executive::new(&mut s, &env, engine.deref()).transact(&t).unwrap();
 		let our_post = s.to_pod_map();
 
 		if fail_unless(s.root() == &post_state_root) {
-			println!("DIFF:\n{}", pod_map_diff(&post, &our_post));
+			println!("FAILED {}.   Diff:\n{}", name, pod_map_diff(&post, &our_post));
 		}
 
 		// TODO: Compare logs.