Factor the Token De/Serializer into serde_test

serde_test/src/assert.rs

@@ -0,0 +1,50 @@
+use serde::{Serialize, Deserialize};
+
+use de::Deserializer;
+use error::Error;
+use ser::Serializer;
+use token::Token;
+
+use std::fmt::Debug;
+
+pub fn assert_tokens<T>(value: &T, tokens: Vec<Token<'static>>)
+    where T: Serialize + Deserialize + PartialEq + Debug,
+{
+    assert_ser_tokens(value, &tokens[..]);
+    assert_de_tokens(value, tokens);
+}
+
+pub fn assert_ser_tokens<T>(value: &T, tokens: &[Token])
+    where T: Serialize,
+{
+    let mut ser = Serializer::new(tokens.iter());
+    assert_eq!(Serialize::serialize(value, &mut ser), Ok(()));
+    assert_eq!(ser.next_token(), None);
+}
+
+// Expect an error deserializing tokens into a T
+pub fn assert_ser_tokens_error<T>(value: &T, tokens: &[Token], error: Error)
+    where T: Serialize + PartialEq + Debug,
+{
+    let mut ser = Serializer::new(tokens.iter());
+    let v: Result<(), Error> = Serialize::serialize(value, &mut ser);
+    assert_eq!(v.as_ref(), Err(&error));
+}
+
+pub fn assert_de_tokens<T>(value: &T, tokens: Vec<Token<'static>>)
+    where T: Deserialize + PartialEq + Debug,
+{
+    let mut de = Deserializer::new(tokens.into_iter());
+    let v: Result<T, Error> = Deserialize::deserialize(&mut de);
+    assert_eq!(v.as_ref(), Ok(value));
+    assert_eq!(de.next_token(), None);
+}
+
+// Expect an error deserializing tokens into a T
+pub fn assert_de_tokens_error<T>(tokens: Vec<Token<'static>>, error: Error)
+    where T: Deserialize + PartialEq + Debug,
+{
+    let mut de = Deserializer::new(tokens.into_iter());
+    let v: Result<T, Error> = Deserialize::deserialize(&mut de);
+    assert_eq!(v, Err(error));
+}