expose sha256 for testing (#43)

* expose sha256 for testing

* Expose sha256 for testing

* Remove unused code

* Add common test functions

* Use npm assert

* move test utils to TS

* Remove test code

* Remove test code

* Remove test code

wasm/src/mod.rs

@@ -663,3 +663,9 @@ pub fn chia_identity(seed: &str) -> Result<JsValue, JsValue> {
     let js_identity: JsChiaIdentity = identity.into();
     serde_wasm_bindgen::to_value(&js_identity).into_js()
 }
+
+#[wasm_bindgen]
+pub fn sha256bytes(bytes_str: &str) -> Result<JsValue, JsValue> {
+    let hashed = Sha256Input::Bytes(bytes_str.as_bytes()).hash();
+    serde_wasm_bindgen::to_value(&hashed).into_js()
+}

wasm/tests/src/lib/tests/common.ts

@@ -0,0 +1,6 @@
+
+export function to_hex_string(byteArray: Array<number>) {
+  return Array.from(byteArray, function(byte: number) {
+    return ('0' + (byte & 0xFF).toString(16)).slice(-2);
+  }).join('')
+}

wasm/tests/src/lib/tests/sha256bytes.test.ts

@@ -0,0 +1,14 @@
+import { init, sha256bytes } from '../../../../pkg/chia_gaming_wasm.js';
+import { to_hex_string } from './common';
+import * as assert from 'assert';
+
+let utf8Encode = new TextEncoder();
+let b = utf8Encode.encode("abc");
+
+it('hashes', async () => {
+    init();
+    let msg = 'hello.there.my.dear.friend';
+    let hash = sha256bytes(msg);
+    console.log(msg, hash);
+    assert.equal( to_hex_string(hash), "5272821c151fdd49f19cc58cf8833da5781c7478a36d500e8dc2364be39f8216" );
+});