test(conway): Create tests for creating block CBOR (#1055)

* test(conway): Added CBOR round-trip serialization tests for Conway block to validate against original bytes

Signed-off-by: Akhil Repala <[email protected]>

* test(conway): Addressed all the comments of the PR and moved the tests to block_test.go

Signed-off-by: Akhil Repala <[email protected]>

* test(conway): Removed the test function with inbuilt Cbor.Marshal() function

Signed-off-by: Akhil Repala <[email protected]>

---------

Signed-off-by: Akhil Repala <[email protected]>

Author: arepala-uml

ledger/conway/block_test.go

@@ -0,0 +1,76 @@
+// Copyright 2024 Blink Labs Software
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package conway_test
+
+import (
+	"bytes"
+	"encoding/hex"
+	"strings"
+	"testing"
+
+	"github.com/blinklabs-io/gouroboros/cbor"
+	"github.com/blinklabs-io/gouroboros/ledger/conway"
+)
+
+// Block taken from https://cexplorer.io/block/27807a70215e3e018eec9be8c619c692e06a78ebcb63daf90d7abe823f3bbf47
+// Slot: 159835207
+// HASH: 27807a70215e3e018eec9be8c619c692e06a78ebcb63daf90d7abe823f3bbf47
+var conwayBlockHex = "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8c1cc8a6294c5297caa0c5820cc3d538bf11bc707e679b8ce4e8e24884d43423890e8a150368027766d91e1fe5822a101581e581c9b17098ec5544a5b03f921a91b80c9dcb461fbbd503dfbb42844e4dea304a11902a2a1636d736781774d696e737761703a204f7264657220457865637574656405a11902a2a1636d736781774d696e737761703a204f7264657220457865637574656406a11902a2a1636d736781774d696e737761703a204f7264657220457865637574656480"
+
+func TestConwayBlock_CborRoundTrip_UsingCborEncode(t *testing.T) {
+	hexStr := strings.TrimSpace(conwayBlockHex)
+
+	// Decode the hex string into CBOR bytes
+	dataBytes, err := hex.DecodeString(hexStr)
+	if err != nil {
+		t.Fatalf("Failed to decode Conway block hex string into CBOR bytes: %v", err)
+	}
+
+	// Deserialize CBOR bytes into ConwayBlock struct
+	var block conway.ConwayBlock
+	err = block.UnmarshalCBOR(dataBytes)
+	if err != nil {
+		t.Fatalf("Failed to unmarshal CBOR data into ConwayBlock: %v", err)
+	}
+
+	// Re-encode using the cbor Encode function
+	encoded, err := cbor.Encode(block)
+	if err != nil {
+		t.Fatalf("Failed to marshal ConwayBlock using custom encode function: %v", err)
+	}
+	if encoded == nil || len(encoded) == 0 {
+		t.Fatal("Custom encoded CBOR from ConwayBlock is nil or empty")
+	}
+
+	// Ensure the original and re-encoded CBOR bytes are identical
+	if !bytes.Equal(dataBytes, encoded) {
+		t.Errorf("Custom CBOR round-trip mismatch for Conway block\nOriginal CBOR (hex): %x\nCustom Encoded CBOR (hex): %x", dataBytes, encoded)
+
+		// Check from which byte it differs
+		diffIndex := -1
+		for i := 0; i < len(dataBytes) && i < len(encoded); i++ {
+			if dataBytes[i] != encoded[i] {
+				diffIndex = i
+				break
+			}
+		}
+		if diffIndex != -1 {
+			t.Logf("First mismatch at byte index: %d", diffIndex)
+			t.Logf("Original byte: 0x%02x, Re-encoded byte: 0x%02x", dataBytes[diffIndex], encoded[diffIndex])
+		} else {
+			t.Logf("Length mismatch: original length = %d, re-encoded length = %d", len(dataBytes), len(encoded))
+		}
+	}
+}