going full courtside

backend-go/internal/protocols/ethereum/jsonrpc_test.go

@@ -0,0 +1,96 @@
+package ethereum
+
+import (
+	"math/big"
+	"testing"
+)
+
+func TestHexToInt(t *testing.T) {
+	tests := []struct {
+		hex  string
+		want int
+	}{
+		{"0x0", 0},
+		{"0x1", 1},
+		{"0xa", 10},
+		{"0xff", 255},
+		{"0x100", 256},
+		{"0x1234", 4660},
+	}
+
+	for _, tt := range tests {
+		got, err := hexToInt(tt.hex)
+		if err != nil {
+			t.Fatalf("hexToInt(%q) error: %v", tt.hex, err)
+		}
+		if got != tt.want {
+			t.Errorf("hexToInt(%q) = %d, want %d", tt.hex, got, tt.want)
+		}
+	}
+}
+
+func TestHexToInt_Invalid(t *testing.T) {
+	_, err := hexToInt("xyz")
+	if err == nil {
+		t.Fatal("expected error for invalid hex")
+	}
+}
+
+func TestHexToInt64(t *testing.T) {
+	got, err := hexToInt64("0x5f5e100")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if got != 100000000 {
+		t.Errorf("got %d, want 100000000", got)
+	}
+}
+
+func TestHexToDecimalString(t *testing.T) {
+	tests := []struct {
+		hex  string
+		want string
+	}{
+		{"0x0", "0"},
+		{"0x", "0"},
+		{"", "0"},
+		{"0x1", "1"},
+		{"0xde0b6b3a7640000", "1000000000000000000"},
+	}
+
+	for _, tt := range tests {
+		got := hexToDecimalString(tt.hex)
+		if got != tt.want {
+			t.Errorf("hexToDecimalString(%q) = %q, want %q", tt.hex, got, tt.want)
+		}
+	}
+}
+
+func TestHexToDecimalString_LargeValues(t *testing.T) {
+	expected := new(big.Int).Mul(
+		big.NewInt(100),
+		new(big.Int).Exp(big.NewInt(10), big.NewInt(18), nil),
+	)
+	hex := "0x" + expected.Text(16)
+	got := hexToDecimalString(hex)
+	if got != expected.String() {
+		t.Errorf("got %q, want %q", got, expected.String())
+	}
+}
+
+func TestNewJsonRpcEthereum_EmptyURL(t *testing.T) {
+	_, err := NewJsonRpcEthereum("")
+	if err == nil {
+		t.Fatal("expected error for empty URL")
+	}
+}
+
+func TestNewJsonRpcEthereum_ValidURL(t *testing.T) {
+	eth, err := NewJsonRpcEthereum("https://example.com/rpc")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if eth == nil {
+		t.Fatal("expected non-nil client")
+	}
+}