diff --git a/internal/helper/binancex/resolver_test.go b/internal/helper/binancex/resolver_test.go
index 5e0767c..b3f13fc 100644
--- a/internal/helper/binancex/resolver_test.go
+++ b/internal/helper/binancex/resolver_test.go
@@ -1,13 +1,16 @@
 package binancex
 
 import (
+	"reflect"
 	"testing"
 
+	"me.thuanle/bbot/internal/configs/binance"
 	"me.thuanle/bbot/internal/data"
 	"me.thuanle/bbot/internal/data/market"
 )
 
 type resolverMarketStub struct {
+	alphaTokens  map[string]bool
 	spotPairs    map[string]bool
 	futuresPairs map[string]bool
 }
@@ -21,7 +24,7 @@ func (m *resolverMarketStub) GetAllPremiumIndex() (map[string]market.PremiumInde
 func (m *resolverMarketStub) GetAllFundRate() (map[string]float64, map[string]int64) { return nil, nil }
 func (m *resolverMarketStub) GetSpotPrice(symbol string) (float64, bool)             { return 0, false }
 func (m *resolverMarketStub) GetMarginInterestRates() map[string]float64             { return nil }
-func (m *resolverMarketStub) IsAlphaToken(symbol string) bool                        { return false }
+func (m *resolverMarketStub) IsAlphaToken(symbol string) bool                        { return m.alphaTokens[symbol] }
 func (m *resolverMarketStub) GetAlphaToken(symbol string) (market.AlphaTokenInfo, bool) {
 	return market.AlphaTokenInfo{}, false
 }
@@ -30,16 +33,20 @@ func (m *resolverMarketStub) IsSpotPair(symbol string) bool               { retu
 func (m *resolverMarketStub) IsFuturesPair(symbol string) bool            { return m.futuresPairs[symbol] }
 func (m *resolverMarketStub) RefreshTradingPairCache() error              { return nil }
 
-func TestToken2FutureSymbols_ResolvesPrefixAndSuffix(t *testing.T) {
+func withResolverMarketStub(t *testing.T, marketStub *resolverMarketStub) {
+	t.Helper()
 	orig := data.Market
-	defer func() { data.Market = orig }()
+	data.Market = marketStub
+	t.Cleanup(func() { data.Market = orig })
+}
 
-	data.Market = &resolverMarketStub{
+func TestToken2FutureSymbols_ResolvesPrefixAndSuffix(t *testing.T) {
+	withResolverMarketStub(t, &resolverMarketStub{
 		futuresPairs: map[string]bool{
 			"1000PEPEUSDT": true,
 			"1000PEPEUSDC": true,
 		},
-	}
+	})
 
 	syms := Token2FutureSymbols("pepe")
 	if len(syms) == 0 {
@@ -62,14 +69,99 @@ func TestToken2FutureSymbols_ResolvesPrefixAndSuffix(t *testing.T) {
 	}
 }
 
-func TestToken2SpotSymbols_AppliesExplicitRemap(t *testing.T) {
-	orig := data.Market
-	defer func() { data.Market = orig }()
+func TestToken2FutureSymbols_UsesDeterministicCandidateOrder(t *testing.T) {
+	withResolverMarketStub(t, &resolverMarketStub{
+		futuresPairs: map[string]bool{
+			"1000PEPEUSDT": true,
+			"1000PEPEUSDC": true,
+			"PEPEUSDT":     true,
+			"PEPEUSDC":     true,
+		},
+	})
 
-	data.Market = &resolverMarketStub{
+	syms := Token2FutureSymbols("pepe")
+	expected := []string{"1000PEPEUSDT", "1000PEPEUSDC", "PEPEUSDT", "PEPEUSDC"}
+	if !reflect.DeepEqual(syms, expected) {
+		t.Fatalf("expected deterministic order %+v, got %+v", expected, syms)
+	}
+}
+
+func TestToken2FutureSymbols_ResolvesUSDCAbbreviation(t *testing.T) {
+	withResolverMarketStub(t, &resolverMarketStub{
+		futuresPairs: map[string]bool{"PEPEUSDC": true},
+	})
+
+	syms := Token2FutureSymbols("pepec")
+	expected := []string{"PEPEUSDC"}
+	if !reflect.DeepEqual(syms, expected) {
+		t.Fatalf("expected USDC abbreviation resolution %+v, got %+v", expected, syms)
+	}
+}
+
+func TestSymbolSuffixListMatchesSymbolSuffixMap(t *testing.T) {
+	seen := make(map[string]struct{}, len(binance.SymbolSuffixList))
+	for _, suffix := range binance.SymbolSuffixList {
+		if _, ok := binance.SymbolSuffixMap[suffix]; !ok {
+			t.Fatalf("SymbolSuffixList contains %q missing from SymbolSuffixMap", suffix)
+		}
+		seen[suffix] = struct{}{}
+	}
+
+	for suffix := range binance.SymbolSuffixMap {
+		if _, ok := seen[suffix]; !ok {
+			t.Fatalf("SymbolSuffixMap contains %q missing from SymbolSuffixList", suffix)
+		}
+	}
+}
+
+func TestIsToken(t *testing.T) {
+	tests := []struct {
+		name       string
+		input      string
+		marketStub *resolverMarketStub
+		want       bool
+	}{
+		{
+			name:  "futures token resolution success",
+			input: "pepe",
+			marketStub: &resolverMarketStub{
+				futuresPairs: map[string]bool{"1000PEPEUSDT": true},
+			},
+			want: true,
+		},
+		{
+			name:  "alpha token fallback",
+			input: "alpha",
+			marketStub: &resolverMarketStub{
+				alphaTokens: map[string]bool{"ALPHA": true},
+			},
+			want: true,
+		},
+		{
+			name:       "non alphanumeric input",
+			input:      "bad!",
+			marketStub: &resolverMarketStub{},
+			want:       false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			withResolverMarketStub(t, tt.marketStub)
+
+			got := IsToken(tt.input)
+			if got != tt.want {
+				t.Fatalf("expected %v, got %v", tt.want, got)
+			}
+		})
+	}
+}
+
+func TestToken2SpotSymbols_AppliesExplicitRemap(t *testing.T) {
+	withResolverMarketStub(t, &resolverMarketStub{
 		futuresPairs: map[string]bool{"LUNA2USDT": true},
 		spotPairs:    map[string]bool{"LUNAUSDT": true},
-	}
+	})
 
 	spots := Token2SpotSymbols("luna2")
 	if len(spots) != 1 || spots[0] != "LUNAUSDT" {
@@ -78,12 +170,9 @@ func TestToken2SpotSymbols_AppliesExplicitRemap(t *testing.T) {
 }
 
 func TestToken2SpotSymbols_SpotOnlyFallback(t *testing.T) {
-	orig := data.Market
-	defer func() { data.Market = orig }()
-
-	data.Market = &resolverMarketStub{
+	withResolverMarketStub(t, &resolverMarketStub{
 		spotPairs: map[string]bool{"ABCUSDT": true},
-	}
+	})
 
 	spots := Token2SpotSymbols("abc")
 	if len(spots) != 1 || spots[0] != "ABCUSDT" {