fix hash mocking method

Author: pospi

src/store_mocks.ts

@@ -44,13 +44,14 @@ export const scheduler = (t) => {
 
 // @see https://crates.io/crates/holo_hash
 const HOLOCHAIN_RAW_IDENTIFIER_LEN = 36
+const HOLOCHAIN_FULL_IDENTIFIER_LEN = 39
 // @see holo_hash::hash_type::primitive
 const HOLOHASH_PREFIX_DNA = Uint8Array.of(0x84, 0x2d, 0x24) // uhC0k
 const HOLOHASH_PREFIX_ENTRY = Uint8Array.of(0x84, 0x21, 0x24) // uhCEk
 // const HOLOHASH_PREFIX_HEADER = Uint8Array.of(0x84, 0x29, 0x24) // uhCkk
 const HOLOHASH_PREFIX_AGENT = Uint8Array.of(0x84, 0x20, 0x24) // uhCAk
 
-function concatenate(...arrays) {
+function concatenate(...arrays): Uint8Array {
   // Calculate byteSize from all arrays
   let size = arrays.reduce((a, b) => a + b.byteLength, 0)
   // Allcolate a new buffer
@@ -66,13 +67,12 @@ function concatenate(...arrays) {
   return result
 }
 
-const mockHash = (prefix) =>
-  Buffer.from(
-    concatenate(
-      prefix,
-      randomBytes(HOLOCHAIN_RAW_IDENTIFIER_LEN).buffer,
-    ),
-  ) as Uint8Array
+const mockHash = (prefix) => {
+  let result = new Uint8Array(HOLOCHAIN_FULL_IDENTIFIER_LEN)
+  result.set(prefix, 0)
+  result.set(Buffer.from(randomBytes(HOLOCHAIN_RAW_IDENTIFIER_LEN).buffer, 3))
+  return result
+}
 
 export const mockEh = () => mockHash(HOLOHASH_PREFIX_ENTRY)
 export const mockAgentKey = () => mockHash(HOLOHASH_PREFIX_AGENT)