Address additional clippy warnings

src/error.rs

@@ -140,6 +140,7 @@ impl error::Error for Error {
         }
     }
 
+    #[allow(match_same_arms)]
     fn cause(&self) -> Option<&error::Error> {
         match *self {
             Error::SqliteFailure(ref err, _) => Some(err),
@@ -159,6 +160,7 @@ impl error::Error for Error {
 
             #[cfg(feature = "functions")]
             Error::InvalidFunctionParameterType => None,
+
             #[cfg(feature = "functions")]
             Error::UserFunctionError(ref err) => Some(&**err),
         }

src/functions.rs

@@ -307,7 +307,7 @@ impl<'a> Context<'a> {
             ffi::sqlite3_set_auxdata(self.ctx,
                                      arg,
                                      mem::transmute(boxed),
-                                     Some(mem::transmute(free_boxed_value::<T>)))
+                                     Some(free_boxed_value::<T>))
         };
     }
 
@@ -480,7 +480,7 @@ impl InnerConnection {
                                             Some(call_boxed_closure::<F, T>),
                                             None,
                                             None,
-                                            Some(mem::transmute(free_boxed_value::<F>)))
+                                            Some(free_boxed_value::<F>))
         };
         self.decode_result(r)
     }
@@ -597,7 +597,7 @@ impl InnerConnection {
                                             None,
                                             Some(call_boxed_step::<A, D, T>),
                                             Some(call_boxed_final::<A, D, T>),
-                                            Some(mem::transmute(free_boxed_value::<D>)))
+                                            Some(free_boxed_value::<D>))
         };
         self.decode_result(r)
     }
@@ -626,6 +626,7 @@ mod test {
     use std::collections::HashMap;
     use libc::c_double;
     use self::regex::Regex;
+    use std::f64::EPSILON;
 
     use {Connection, Error, Result};
     use functions::{Aggregate, Context};
@@ -642,7 +643,7 @@ mod test {
         db.create_scalar_function("half", 1, true, half).unwrap();
         let result: Result<f64> = db.query_row("SELECT half(6)", &[], |r| r.get(0));
 
-        assert_eq!(3f64, result.unwrap());
+        assert!((3f64 - result.unwrap()).abs() < EPSILON);
     }
 
     #[test]
@@ -650,7 +651,7 @@ mod test {
         let db = Connection::open_in_memory().unwrap();
         db.create_scalar_function("half", 1, true, half).unwrap();
         let result: Result<f64> = db.query_row("SELECT half(6)", &[], |r| r.get(0));
-        assert_eq!(3f64, result.unwrap());
+        assert!((3f64 - result.unwrap()).abs() < EPSILON);
 
         db.remove_function("half", 1).unwrap();
         let result: Result<f64> = db.query_row("SELECT half(6)", &[], |r| r.get(0));

src/lib.rs

@@ -53,9 +53,6 @@
 #![cfg_attr(feature="clippy", feature(plugin))]
 #![cfg_attr(feature="clippy", plugin(clippy))]
 
-// Clippy complains about SQLite in our doc comments, but they're fine.
-#![cfg_attr(feature="clippy", allow(doc_markdown))]
-
 extern crate libc;
 extern crate libsqlite3_sys as ffi;
 #[macro_use]
@@ -1224,10 +1221,9 @@ mod test {
 
     #[test]
     fn test_open_with_flags() {
-        for bad_flags in [OpenFlags::empty(),
-                          SQLITE_OPEN_READ_ONLY | SQLITE_OPEN_READ_WRITE,
-                          SQLITE_OPEN_READ_ONLY | SQLITE_OPEN_CREATE]
-                             .iter() {
+        for bad_flags in &[OpenFlags::empty(),
+                           SQLITE_OPEN_READ_ONLY | SQLITE_OPEN_READ_WRITE,
+                           SQLITE_OPEN_READ_ONLY | SQLITE_OPEN_CREATE] {
             assert!(Connection::open_in_memory_with_flags(*bad_flags).is_err());
         }
     }

src/transaction.rs

@@ -174,6 +174,7 @@ impl<'conn> Drop for Transaction<'conn> {
 }
 
 #[cfg(test)]
+#[cfg_attr(feature="clippy", allow(similar_names))]
 mod test {
     use Connection;
 

src/types.rs

@@ -328,11 +328,13 @@ impl FromSql for Value {
 }
 
 #[cfg(test)]
+#[cfg_attr(feature="clippy", allow(similar_names))]
 mod test {
     use Connection;
     use super::time;
     use Error;
     use libc::{c_int, c_double};
+    use std::f64::EPSILON;
 
     fn checked_memory_handle() -> Connection {
         let db = Connection::open_in_memory().unwrap();
@@ -403,6 +405,7 @@ mod test {
     }
 
     #[test]
+    #[cfg_attr(feature="clippy", allow(cyclomatic_complexity))]
     fn test_mismatched_types() {
         fn is_invalid_column_type(err: Error) -> bool {
             match err {
@@ -426,7 +429,7 @@ mod test {
         assert_eq!(vec![1, 2], row.get_checked::<i32, Vec<u8>>(0).unwrap());
         assert_eq!("text", row.get_checked::<i32, String>(1).unwrap());
         assert_eq!(1, row.get_checked::<i32, c_int>(2).unwrap());
-        assert_eq!(1.5, row.get_checked::<i32, c_double>(3).unwrap());
+        assert!((1.5 - row.get_checked::<i32, c_double>(3).unwrap()).abs() < EPSILON);
         assert!(row.get_checked::<i32, Option<c_int>>(4).unwrap().is_none());
         assert!(row.get_checked::<i32, Option<c_double>>(4).unwrap().is_none());
         assert!(row.get_checked::<i32, Option<String>>(4).unwrap().is_none());
@@ -491,7 +494,10 @@ mod test {
         assert_eq!(Value::Text(String::from("text")),
                    row.get_checked::<i32, Value>(1).unwrap());
         assert_eq!(Value::Integer(1), row.get_checked::<i32, Value>(2).unwrap());
-        assert_eq!(Value::Real(1.5), row.get_checked::<i32, Value>(3).unwrap());
+        match row.get_checked::<i32, Value>(3).unwrap() {
+            Value::Real(val) => assert!((1.5 - val).abs() < EPSILON),
+            x => panic!("Invalid Value {:?}", x),
+        }
         assert_eq!(Value::Null, row.get_checked::<i32, Value>(4).unwrap());
     }
 }