Added unit tests for sha256

typescript/src/bitcoin.ts

@@ -527,7 +527,6 @@ export function createKeyRing(
  * @param text - Text the HASH160 is computed for.
  * @returns Hash as a 20-byte un-prefixed hex string.
  */
-// TODO: Make it use Hex for input and return values.
 export function computeHash160(text: string): string {
   const sha256Hash = utils.sha256(
     Hex.from(Buffer.from(text, "hex")).toPrefixedString()
@@ -542,7 +541,6 @@ export function computeHash160(text: string): string {
  * @param text - Text the single SHA256 is computed for.
  * @returns Hash as a 32-byte un-prefixed hex string.
  */
-// TODO: Consider adding unit tests.
 export function computeSha256(text: Hex): Hex {
   const hash = utils.sha256(text.toPrefixedString())
   return Hex.from(hash)

typescript/test/bitcoin.test.ts

@@ -16,6 +16,7 @@ import {
   createAddressFromPublicKey,
   readCompactSizeUint,
   computeHash160,
+  computeSha256,
   computeHash256,
   isP2PKHScript,
   isP2WPKHScript,
@@ -98,6 +99,21 @@ describe("Bitcoin", () => {
     })
   })
 
+  describe("computeSha256", () => {
+    it("should compute hash256 correctly", () => {
+      const hexValue = Hex.from(
+        "03474444cca71c678f5019d16782b6522735717a94602085b4adf707b465c36ca8"
+      )
+      const expectedSha256 = Hex.from(
+        "c62e5cb26c97cb52fea7f9965e9ea1f8d41c97773688aa88674e64629fc02901"
+      )
+
+      expect(computeSha256(hexValue).toString()).to.be.equal(
+        expectedSha256.toString()
+      )
+    })
+  })
+
   describe("P2PKH <-> public key hash conversion", () => {
     const publicKeyHash = "3a38d44d6a0c8d0bb84e0232cc632b7e48c72e0e"
     const P2WPKHAddress = "bc1q8gudgnt2pjxshwzwqgevccet0eyvwtswt03nuy"