test: add HbarAllowance unit coverage

Signed-off-by: peter941221 <peter941221@gmail.com>

Author: peter941221

sdk/hbar_allowance_unit_test.go

@@ -0,0 +1,97 @@
+//go:build all || unit
+
+package hiero
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+// SPDX-License-Identifier: Apache-2.0
+
+func TestUnitHbarAllowanceConstructor(t *testing.T) {
+	t.Parallel()
+
+	ownerAccountID := *_MockHbarAllowance().OwnerAccountID
+	spenderAccountID := *_MockHbarAllowance().SpenderAccountID
+	amount := int64(100)
+
+	allowance := NewHbarAllowance(ownerAccountID, spenderAccountID, amount)
+
+	require.Equal(t, ownerAccountID, *allowance.OwnerAccountID)
+	require.Equal(t, spenderAccountID, *allowance.SpenderAccountID)
+	require.Equal(t, amount, allowance.Amount)
+}
+
+func TestUnitHbarAllowanceProtobufRoundTrip(t *testing.T) {
+	t.Parallel()
+
+	allowance := _MockHbarAllowance()
+
+	pb := allowance._ToProtobuf()
+	require.NotNil(t, pb)
+
+	allowanceFromProtobuf := _HbarAllowanceFromProtobuf(pb)
+	require.Equal(t, allowance, allowanceFromProtobuf)
+}
+
+func TestUnitHbarAllowanceProtobufRoundTripNilOwner(t *testing.T) {
+	t.Parallel()
+
+	allowance := _MockHbarAllowance()
+	allowance.OwnerAccountID = nil
+
+	pb := allowance._ToProtobuf()
+	require.NotNil(t, pb)
+	require.Nil(t, pb.Owner)
+
+	allowanceFromProtobuf := _HbarAllowanceFromProtobuf(pb)
+	require.Equal(t, allowance, allowanceFromProtobuf)
+}
+
+func TestUnitHbarAllowanceProtobufRoundTripNilSpender(t *testing.T) {
+	t.Parallel()
+
+	allowance := _MockHbarAllowance()
+	allowance.SpenderAccountID = nil
+
+	pb := allowance._ToProtobuf()
+	require.NotNil(t, pb)
+	require.Nil(t, pb.Spender)
+
+	allowanceFromProtobuf := _HbarAllowanceFromProtobuf(pb)
+	require.Equal(t, allowance, allowanceFromProtobuf)
+}
+
+func TestUnitHbarAllowanceString(t *testing.T) {
+	t.Parallel()
+
+	allowance := _MockHbarAllowance()
+	require.Equal(t, "OwnerAccountID: 0.0.123, SpenderAccountID: 0.0.456, Amount: 100 tℏ", allowance.String())
+
+	allowance.OwnerAccountID = nil
+	require.Equal(t, "SpenderAccountID: 0.0.456, Amount: 100 tℏ", allowance.String())
+
+	allowance = _MockHbarAllowance()
+	allowance.SpenderAccountID = nil
+	require.Equal(t, "OwnerAccountID: 0.0.123, Amount: 100 tℏ", allowance.String())
+
+	allowance.OwnerAccountID = nil
+	require.Equal(t, "", allowance.String())
+}
+
+func _MockHbarAllowance() HbarAllowance {
+	ownerAccountID, _ := AccountIDFromString("0.0.123-esxsf")
+	ownerAccountID.checksum = nil
+
+	spenderAccountID, _ := AccountIDFromString("0.0.123-esxsf")
+	spenderAccountID.Account = 456
+	spenderAccountID.checksum = nil
+
+	return HbarAllowance{
+		OwnerAccountID:   &ownerAccountID,
+		SpenderAccountID: &spenderAccountID,
+		Amount:           100,
+	}
+}