feat(bch): Add Android signing test

android/app/src/androidTest/java/com/trustwallet/core/app/blockchains/bitcoincash/TestBitcoinCashSigning.kt

@@ -0,0 +1,81 @@
+package com.trustwallet.core.app.blockchains.bitcoincash
+
+import com.trustwallet.core.app.utils.Numeric
+import com.trustwallet.core.app.utils.toHexBytesInByteString
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import wallet.core.java.AnySigner
+import wallet.core.jni.BitcoinSigHashType
+import wallet.core.jni.CoinType
+import wallet.core.jni.proto.Bitcoin
+import wallet.core.jni.proto.BitcoinV2
+import wallet.core.jni.proto.Common.SigningError
+
+class TestBitcoinCashSigning {
+
+    init {
+        System.loadLibrary("TrustWalletCore")
+    }
+
+    @Test
+    fun testSignV2P2PKH() {
+        val privateKey = "7fdafb9db5bc501f2096e7d13d331dc7a75d9594af3d251313ba8b6200f4e384".toHexBytesInByteString()
+
+        val utxo1 = BitcoinV2.Input.newBuilder().apply {
+            outPoint = BitcoinV2.OutPoint.newBuilder().apply {
+                hash = "e28c2b955293159898e34c6840d99bf4d390e2ee1c6f606939f18ee1e2000d05".toHexBytesInByteString()
+                vout = 2
+            }.build()
+            value = 5151
+            sighashType = BitcoinSigHashType.ALL.value() + BitcoinSigHashType.FORK.value()
+            receiverAddress = "bitcoincash:qzhlrcrcne07x94h99thved2pgzdtv8ccujjy73xya"
+        }
+
+        val out1 = BitcoinV2.Output.newBuilder().apply {
+            value = 600
+            // Legacy address
+            toAddress = "1Bp9U1ogV3A14FMvKbRJms7ctyso4Z4Tcx"
+        }
+        val changeOutputExplicit = BitcoinV2.Output.newBuilder().apply {
+            value = 4325
+            // Legacy address
+            toAddress = "qz0q3xmg38sr94rw8wg45vujah7kzma3cskxymnw06"
+        }
+
+        val builder = BitcoinV2.TransactionBuilder.newBuilder()
+            .setVersion(BitcoinV2.TransactionVersion.V1)
+            .addInputs(utxo1)
+            .addOutputs(out1)
+            .addOutputs(changeOutputExplicit)
+            .setInputSelector(BitcoinV2.InputSelector.UseAll)
+            .setFixedDustThreshold(546)
+            .build()
+
+        val input = BitcoinV2.SigningInput.newBuilder()
+            .addPrivateKeys(privateKey)
+            .setBuilder(builder)
+            .setChainInfo(BitcoinV2.ChainInfo.newBuilder().apply {
+                p2PkhPrefix = 0
+                p2ShPrefix = 5
+                hrp = "bitcoincash"
+            })
+            .build()
+
+        val legacyInput = Bitcoin.SigningInput.newBuilder()
+            .setSigningV2(input)
+            // `CoinType` must be set to be handled correctly.
+            .setCoinType(CoinType.BITCOINCASH.value())
+            .build()
+
+        val outputLegacy = AnySigner.sign(legacyInput, CoinType.BITCOINCASH, Bitcoin.SigningOutput.parser())
+        assertEquals(outputLegacy.error, SigningError.OK)
+        assert(outputLegacy.hasSigningResultV2())
+
+        val output = outputLegacy.signingResultV2
+        assertEquals(output.error, SigningError.OK)
+        assertEquals(
+            Numeric.toHexString(output.encoded.toByteArray()),
+            "0x0100000001e28c2b955293159898e34c6840d99bf4d390e2ee1c6f606939f18ee1e2000d05020000006b483045022100b70d158b43cbcded60e6977e93f9a84966bc0cec6f2dfd1463d1223a90563f0d02207548d081069de570a494d0967ba388ff02641d91cadb060587ead95a98d4e3534121038eab72ec78e639d02758e7860cdec018b49498c307791f785aa3019622f4ea5bffffffff0258020000000000001976a914769bdff96a02f9135a1d19b749db6a78fe07dc9088ace5100000000000001976a9149e089b6889e032d46e3b915a3392edfd616fb1c488ac00000000"
+        )
+    }
+}