test: add tests for TestGetTokens & TestParseAddressBalance methods

backend/pkg/commons/rpc/utils_test.go

@@ -13,6 +13,8 @@ import (
 var (
 	aliceAddress = common.HexToAddress("0x95222290DD7278Aa3Ddd389Cc1E1d165CC4BAfe5")
 	bobAddress   = common.HexToAddress("0x388C818CA8B9251b393131C08a736A67ccB19297")
+	token        = common.HexToAddress("0x1234567890abcdef1234567890abcdef12345678")
+	token2       = common.HexToAddress("0xabcdef1234567890abcdef1234567890abcdef12")
 )
 
 func TestGetReceiver(t *testing.T) {
@@ -237,3 +239,184 @@ func TestGetLogsFromReceipts(t *testing.T) {
 		})
 	}
 }
+
+func TestGetTokens(t *testing.T) {
+	tests := []struct {
+		name     string
+		tokenStr []string
+		expected []common.Address
+	}{
+		{
+			name:     "single token address",
+			tokenStr: []string{token.Hex()},
+			expected: []common.Address{token},
+		},
+		{
+			name:     "two token addresses",
+			tokenStr: []string{token.Hex(), token2.Hex()},
+			expected: []common.Address{token, token2},
+		},
+		{
+			name:     "empty token addresses",
+			tokenStr: []string{},
+			expected: []common.Address{},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := getTokens(tt.tokenStr)
+			if len(result) != len(tt.expected) {
+				t.Fatalf("got %v tokens, want %v tokens", len(result), len(tt.expected))
+			}
+			for i, token := range result {
+				if token != tt.expected[i] {
+					t.Errorf("got token %v, want %v", token, tt.expected[i])
+				}
+			}
+		})
+	}
+}
+
+func TestParseAddressBalance(t *testing.T) {
+	tests := []struct {
+		name   string
+		tokens []common.
+			Address
+		address     string
+		balances    []*big.Int
+		expected    []*types.Eth1AddressBalance
+		expectError bool
+	}{
+		{
+			name:    "valid single token and balance",
+			tokens:  []common.Address{token},
+			address: aliceAddress.Hex(),
+			balances: []*big.Int{
+				big.NewInt(100),
+			},
+			expected: []*types.Eth1AddressBalance{
+				{
+					Address: aliceAddress.Bytes(),
+					Token:   token.Bytes(),
+					Balance: big.NewInt(100).Bytes(),
+				},
+			},
+			expectError: false,
+		},
+		{
+			name:    "valid two tokens and balances",
+			tokens:  []common.Address{token, token2},
+			address: aliceAddress.Hex(),
+			balances: []*big.Int{
+				big.NewInt(100),
+				big.NewInt(200),
+			},
+			expected: []*types.Eth1AddressBalance{
+				{
+					Address: aliceAddress.Bytes(),
+					Token:   token.Bytes(),
+					Balance: big.NewInt(100).Bytes(),
+				},
+				{
+					Address: aliceAddress.Bytes(),
+					Token:   token2.Bytes(),
+					Balance: big.NewInt(200).Bytes(),
+				},
+			},
+			expectError: false,
+		},
+		{
+			name:    "no tokens",
+			tokens:  []common.Address{},
+			address: aliceAddress.Hex(),
+			balances: []*big.Int{
+				big.NewInt(100),
+			},
+			expected:    nil,
+			expectError: true,
+		},
+		{
+			name:        "no balance",
+			tokens:      []common.Address{token},
+			address:     aliceAddress.Hex(),
+			balances:    []*big.Int{},
+			expected:    nil,
+			expectError: true,
+		},
+		{
+			name:    "single token and two balances",
+			tokens:  []common.Address{token},
+			address: aliceAddress.Hex(),
+			balances: []*big.Int{
+				big.NewInt(100),
+				big.NewInt(200),
+			},
+			expected:    nil,
+			expectError: true,
+		},
+		{
+			name:    "invalid address format",
+			tokens:  []common.Address{token},
+			address: "invalid-address",
+			balances: []*big.Int{
+				big.NewInt(100),
+			},
+			expected:    nil,
+			expectError: true,
+		},
+		{
+			name:    "empty token address",
+			tokens:  []common.Address{common.HexToAddress("")},
+			address: aliceAddress.Hex(),
+			balances: []*big.Int{
+				big.NewInt(100),
+			},
+			expected:    nil,
+			expectError: true,
+		},
+		{
+			name:    "nil balance",
+			tokens:  []common.Address{token},
+			address: aliceAddress.Hex(),
+			balances: []*big.Int{
+				nil,
+			},
+			expected:    nil,
+			expectError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result, err := parseAddressBalance(tt.tokens, tt.address, tt.balances)
+
+			if tt.expectError {
+				if err == nil {
+					t.Errorf("expected an error but got none")
+				}
+				if result != nil {
+					t.Errorf("expected result to be nil on error, got %v", result)
+				}
+			} else {
+				if err != nil {
+					t.Errorf("unexpected error: %v", err)
+				}
+				if len(result) != len(tt.expected) {
+					t.Fatalf("got %v balances, want %v balances", len(result), len(tt.expected))
+				}
+				for i, res := range result {
+					if !bytes.Equal(res.Address, tt.expected[i].Address) {
+						t.Errorf("got Address %v, want %v", res.Address, tt.expected[i].Address)
+					}
+					if !bytes.Equal(res.Token, tt.expected[i].Token) {
+						t.Errorf("got Token %v, want %v", res.Token, tt.expected[i].Token)
+					}
+					if !bytes.Equal(res.Balance, tt.expected[i].Balance) {
+						t.Errorf("got Balance %v, want %v", res.Balance, tt.expected[i].Balance)
+					}
+				}
+			}
+		})
+	}
+}