Add keypair gen fn for testing

src/utils/mod.rs

@@ -7,3 +7,4 @@ use super::state::crystallized_state;
 
 pub mod types;
 pub mod bls;
+pub mod test_helpers;

src/utils/test_helpers.rs

@@ -0,0 +1,13 @@
+extern crate rand;
+
+use super::bls::Keypair;
+use self::rand::{ SeedableRng, XorShiftRng };
+
+// Returns a keypair for use in testing purposes.
+pub fn get_dangerous_test_keypair() -> Keypair {
+    let mut rng = XorShiftRng::from_seed([0xbc4f6d44, 
+                                         0xd62f276c, 
+                                         0xb963afd0, 
+                                         0x5455863d]);
+    Keypair::generate(&mut rng)
+}