Fix for advance with rewards - now it moves the time forward.

`era_length` in HostEnv

core/src/host.rs

@@ -254,6 +254,9 @@ pub trait HostContext {
     /// Advances the block time by the specified time difference and processes auctions.
     fn advance_with_auctions(&self, time_diff: u64);
 
+    /// Era length in milliseconds.
+    fn era_length(&self) -> u64;
+
     /// Returns the current block time.
     fn block_time(&self) -> u64;
 
@@ -371,6 +374,13 @@ impl HostEnv {
     pub fn advance_with_rewards(&self, time_diff: u64) {
         let backend = self.backend.borrow();
         backend.advance_with_auctions(time_diff);
+        backend.advance_block_time(time_diff);
+    }
+
+    /// Returns the era length in milliseconds.
+    pub fn era_length(&self) -> u64 {
+        let backend = self.backend.borrow();
+        backend.era_length()
     }
 
     /// Returns the current block time.

odra-casper/livenet-env/src/livenet_host.rs

@@ -263,6 +263,10 @@ impl HostContext for LivenetHost {
     fn advance_with_auctions(&self, _: u64) {
         panic!("advance_with_auctions not supported for LivenetHost")
     }
+
+    fn era_length(&self) -> u64 {
+        panic!("era_length not yet implemented for LivenetHost")
+    }
 }
 
 impl LivenetHost {

odra-casper/test-vm/src/casper_host.rs

@@ -173,6 +173,10 @@ impl HostContext for CasperHost {
     fn transfer(&self, to: Address, amount: U512) -> OdraResult<()> {
         self.vm.borrow_mut().transfer(to, amount)
     }
+
+    fn era_length(&self) -> u64 {
+        self.vm.borrow().era_length()
+    }
 }
 
 impl CasperHost {

odra-casper/test-vm/src/vm/casper_vm.rs

@@ -149,6 +149,11 @@ impl CasperVm {
         let remaining_time = time_diff % time_between_auctions;
     }
 
+    /// Gets the era length in milliseconds.
+    pub fn era_length(&self) -> u64 {
+        self.context.chainspec().core_config.era_duration.millis()
+    }
+
     /// Gets the current block time.
     pub fn block_time(&self) -> u64 {
         self.block_time

odra-vm/src/odra_vm_host.rs

@@ -156,6 +156,10 @@ impl HostContext for OdraVmHost {
             .borrow()
             .checked_transfer_tokens(&caller, &to, &amount)
     }
+
+    fn era_length(&self) -> u64 {
+        1_000u64
+    }
 }
 
 impl OdraVmHost {