rlp tests, the beginning

json-tests/json/rlp/README.md

@@ -0,0 +1,39 @@
+# Rlp tests guideline
+
+Rlp can be tested in various ways. It can encode/decode a value or an array of values. Let's start with encoding.
+
+Each operation must have field:
+
+- `operation` - `append`, `append_list`, `append_empty` or `append_raw`
+
+Additionally `append` and `append_raw` must additionally define a `value` field:
+
+- `value` - data
+
+Also `append_raw` and `append_list` requires `len` field
+
+- `len` - integer
+
+### Encoding Test Example
+
+```json
+{
+	"input":
+	[
+		{
+			"operation": "append_list",
+			"len": 2
+		},
+		{
+			"operation": "append",
+			"value": "cat"
+		},
+		{
+			"operation": "append",
+			"value": "dog"
+		}
+	]
+	"output": "0xc88363617183646f67"
+}
+```
+

json-tests/json/rlp/catdog.json

@@ -0,0 +1,18 @@
+{
+	"input":
+	[
+		{
+			"operation": "append_list",
+			"len": 2
+		},
+		{
+			"operation": "append",
+			"value": "cat"
+		},
+		{
+			"operation": "append",
+			"value": "dog"
+		}
+	]
+	"output": "0xc88363617183646f67"
+}

json-tests/src/lib.rs

@@ -8,7 +8,9 @@ use std::fs::File;
 use glob::glob;
 use rustc_serialize::*;
 
+mod util;
 pub mod trie;
+pub mod rlp;
 
 pub trait JsonTest: Sized {
 	type Input;

json-tests/src/rlp.rs

@@ -0,0 +1,52 @@
+//! json rlp tests
+use rustc_serialize::*;
+use super::{JsonTest, JsonLoader};
+use util::*;
+
+pub enum Operation {
+	Append(Vec<u8>),
+	AppendList(usize),
+	AppendRaw(Vec<u8>, usize),
+	AppendEmpty
+}
+
+impl Into<Operation> for json::Json {
+	fn into(self) -> Operation {
+		let obj = self.as_object().unwrap();
+		match obj["operation"].as_string().unwrap().as_ref() {
+			"append" => Operation::Append(hex_or_string(obj["value"].as_string().unwrap())),
+			"append_list" => Operation::AppendList(obj["len"].as_u64().unwrap() as usize),
+			"append_raw" => Operation::AppendRaw(hex_or_string(obj["value"].as_string().unwrap()), obj["len"].as_u64().unwrap() as usize),
+			"append_empty" => Operation::AppendEmpty,
+			other => { panic!("Unsupported opertation: {}", other); }
+		}
+	}
+}
+
+pub struct RlpStreamTest {
+	loader: JsonLoader
+}
+
+impl JsonTest for RlpStreamTest {
+	type Input = Vec<Operation>;
+	type Output = Vec<u8>;
+
+	fn new(data: &[u8]) -> Self {
+		RlpStreamTest {
+			loader: JsonLoader::new(data) 
+		}
+	}
+
+	fn input(&self) -> Self::Input {
+		self.loader.input().as_array().unwrap()
+			.iter()
+			.cloned()
+			.map(|i| i.into())
+			.collect()
+	}
+
+	fn output(&self) -> Self::Output {
+		hex_or_string(self.loader.output().as_string().unwrap())
+	}
+}
+

json-tests/src/trie.rs

@@ -1,27 +1,12 @@
 //! json trie tests
 use std::collections::HashMap;
 use rustc_serialize::*;
-use rustc_serialize::hex::FromHex;
 use super::{JsonTest, JsonLoader};
-
-enum OperationType {
-	Insert,
-	Remove
-}
-
-impl Decodable for OperationType {
-	fn decode<D>(d: &mut D) -> Result<OperationType, D::Error> where D: Decoder {
-		match try!(String::decode(d)).as_ref() {
-			"insert" => Ok(OperationType::Insert),
-			"remove" => Ok(OperationType::Remove),
-			other => panic!("invalid operation type: {}", other)
-		}
-	}
-}
+use util::*;
 
 #[derive(RustcDecodable)]
 struct RawOperation {
-	operation: OperationType,
+	operation: String,
 	key: String,
 	value: Option<String>
 }
@@ -31,18 +16,12 @@ pub enum Operation {
 	Remove(Vec<u8>)
 }
 
-fn hex_or_string(s: &str) -> Vec<u8> {
-	match s.starts_with("0x") {
-		true => s[2..].from_hex().unwrap(),
-		false => From::from(s)
-	}
-}
-
 impl Into<Operation> for RawOperation {
 	fn into(self) -> Operation {
-		match self.operation {
-			OperationType::Insert => Operation::Insert(hex_or_string(&self.key), hex_or_string(&self.value.unwrap())),
-			OperationType::Remove => Operation::Remove(hex_or_string(&self.key))
+		match self.operation.as_ref() {
+			"insert" => Operation::Insert(hex_or_string(&self.key), hex_or_string(&self.value.unwrap())),
+			"remove" => Operation::Remove(hex_or_string(&self.key)),
+			other => panic!("invalid operation type: {}", other)
 		}
 	}
 }

json-tests/src/util.rs

@@ -0,0 +1,8 @@
+use rustc_serialize::hex::FromHex;
+
+pub fn hex_or_string(s: &str) -> Vec<u8> {
+	match s.starts_with("0x") {
+		true => s[2..].from_hex().unwrap(),
+		false => From::from(s)
+	}
+}

src/trie.rs

@@ -742,7 +742,7 @@ impl Trie for TrieDB {
 #[cfg(test)]
 mod tests {
 	extern crate json_tests;
-	use self::json_tests::*;
+	use self::json_tests::{trie, execute_tests_from_directory};
 	use rustc_serialize::hex::FromHex;
 	use triehash::*;
 	use hash::*;