move test crate into core

crates/tek_core/src/lib.rs

@@ -25,11 +25,16 @@ use std::fmt::{Debug, Display};
     ($($name:ident)*) => { $(mod $name; pub use self::$name::*;)* };
 }
 
-/// Define and reexport public modules.
+/// Define public modules.
 #[macro_export] macro_rules! pubmod {
     ($($name:ident)*) => { $(pub mod $name;)* };
 }
 
+/// Define test modules.
+#[macro_export] macro_rules! testmod {
+    ($($name:ident)*) => { $(#[cfg(test)] mod $name;)* };
+}
+
 submod! {
     audio
     edn
@@ -39,6 +44,10 @@ submod! {
     tui
 }
 
+testmod! {
+    test
+}
+
 /// Standard result type.
 pub type Usually<T> = Result<T, Box<dyn Error>>;
 
@@ -52,7 +61,7 @@ pub trait Number: Send + Sync + Copy
     + Mul<Self, Output=Self>
     + Div<Self, Output=Self>
     + Ord + PartialEq + Eq
-    + Debug + Display {}
+    + Debug + Display + Default {}
 
 impl<T> Number for T where
     T: Send + Sync + Copy
@@ -61,5 +70,5 @@ impl<T> Number for T where
         + Mul<Self, Output=Self>
         + Div<Self, Output=Self>
         + Ord + PartialEq + Eq
-        + Debug + Display
+        + Debug + Display + Default
 {}