Allow sender balance to equal the amount sent in the token contract

Thanks Steve!

Author: masonforest

Cargo.toml

@@ -1,6 +1,7 @@
 [workspace]
 members = [
   "base_api",
+  "user_contracts",
   "human_readable_name_registry",
   "base_token",
   "leader_election"

base_token/dist/base_token.wasm

@@ -22,7 +22,7 @@ pub fn transfer(receiver_address: Vec<u8>, amount: u64) -> Result<(), Error> {
     let sender_balance = read_int(sender());
     let receiver_balance = read_int(receiver_address.clone());
 
-    if sender_balance > amount {
+    if sender_balance => amount {
         write_int(sender(), sender_balance - amount);
         write_int(receiver_address, receiver_balance + amount);
         Ok(())

base_token/src/base_token.rs

@@ -21,22 +21,6 @@ extern crate wee_alloc;
 #[cfg(not(test))]
 #[global_allocator]
 static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
-#[cfg(not(test))]
-use core::panic::PanicInfo;
-
-#[cfg(not(test))]
-#[panic_implementation]
-fn panic(_info: &PanicInfo) -> ! {
-    loop {}
-}
-
-#[cfg(not(test))]
-#[alloc_error_handler]
-fn out_of_memory(_: ::core::alloc::Layout) -> ! {
-    loop {}
-}
-
-
 mod error;
 
 #[cfg(not(test))]

base_token/src/lib.rs

@@ -1,4 +1,4 @@
-const WasmRPC = require('/Users/masonf/src/simple-wasm').default;
+const WasmRPC = require('/Users/masonf/src/js-wasm-rpc-client').default;
 const { execFileSync } = require('child_process');
 const cbor = require('cbor');
 const { StringDecoder } = require('string_decoder');
@@ -14,6 +14,7 @@ class FakeBlockchain extends WasmRPC {
       _read: (keyPtr) => {
         var key = this.readPointer(keyPtr);
         if(this.storage[key]) {
+          // console.log(`${key} -> ${this.storage[key]}`)
           return this.writePointer(this.storage[key]);
         } else {
           return this.writePointer(new Uint8Array([]));
@@ -23,6 +24,7 @@ class FakeBlockchain extends WasmRPC {
         var key = this.readPointer(keyPtr);
         var value = this.readPointer(valuePtr);
 
+        // console.log(`${key} = ${value}`)
         this.storage[key] = value;
       },
       throw: console.log,

base_token/test/support/fake-blockchain.js

@@ -17,7 +17,7 @@ describe('BaseToken', function() {
       defaultSender: SENDER,
     });
 
-    await blockchain.loadFile("../target/wasm32-unknown-unknown/release/base_token.wasm");
+    await blockchain.loadFile("dist/base_token.wasm");
   });
 
   afterEach(() => blockchain.reset());