Merge pull request #1920 from Mingun/track_caller

Show correct location in error messages by tracking caller of utility `assert_tokens` functions

serde_test/src/assert.rs

@@ -28,6 +28,7 @@ use std::fmt::Debug;
 ///     Token::StructEnd,
 /// ]);
 /// ```
+#[cfg_attr(has_track_caller, track_caller)]
 pub fn assert_tokens<'de, T>(value: &T, tokens: &'de [Token])
 where
     T: Serialize + Deserialize<'de> + PartialEq + Debug,
@@ -58,6 +59,7 @@ where
 ///     Token::StructEnd,
 /// ]);
 /// ```
+#[cfg_attr(has_track_caller, track_caller)]
 pub fn assert_ser_tokens<T>(value: &T, tokens: &[Token])
 where
     T: Serialize,
@@ -110,6 +112,7 @@ where
 ///     assert_ser_tokens_error(&example, expected, error);
 /// }
 /// ```
+#[cfg_attr(has_track_caller, track_caller)]
 pub fn assert_ser_tokens_error<T>(value: &T, tokens: &[Token], error: &str)
 where
     T: Serialize,
@@ -147,6 +150,7 @@ where
 ///     Token::StructEnd,
 /// ]);
 /// ```
+#[cfg_attr(has_track_caller, track_caller)]
 pub fn assert_de_tokens<'de, T>(value: &T, tokens: &'de [Token])
 where
     T: Deserialize<'de> + PartialEq + Debug,
@@ -199,6 +203,7 @@ where
 ///     "unknown field `x`, expected `a` or `b`",
 /// );
 /// ```
+#[cfg_attr(has_track_caller, track_caller)]
 pub fn assert_de_tokens_error<'de, T>(tokens: &'de [Token], error: &str)
 where
     T: Deserialize<'de>,