1 files changed, 66 insertions, 0 deletions
diff --git a/player-server/internal/auth/token_test.go b/player-server/internal/auth/token_test.go
new file mode 100644
index 0000000..bf18aa5
--- /dev/null
+++ b/player-server/internal/auth/token_test.go
@@ -0,0 +1,66 @@
+package auth
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"testing"
+)
+
+func TestTokenManager_Generate(t *testing.T) {
+	tm := NewTokenManager()
+	seen := make(map[string]string)
+
+	for i := 0; i < 1000; i++ {
+		plaintext, hash := tm.Generate()
+		if len(plaintext) != tokenByteLength*2 {
+			t.Fatalf("expected plaintext length %d, got %d", tokenByteLength*2, len(plaintext))
+		}
+		decoded, err := hex.DecodeString(plaintext)
+		if err != nil {
+			t.Fatalf("expected hex plaintext: %v", err)
+		}
+		if len(decoded) != tokenByteLength {
+			t.Fatalf("expected %d decoded bytes, got %d", tokenByteLength, len(decoded))
+		}
+		if hash != tm.Hash(plaintext) {
+			t.Fatal("expected hash to match plaintext")
+		}
+		if previousHash, ok := seen[plaintext]; ok {
+			t.Fatalf("duplicate token generated with hashes %q and %q", previousHash, hash)
+		}
+		seen[plaintext] = hash
+	}
+}
+
+func TestTokenManager_Hash(t *testing.T) {
+	tm := NewTokenManager()
+	tests := []struct {
+		name      string
+		plaintext string
+	}{
+		{"empty token", ""},
+		{"hex token", "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"},
+		{"plain string", "api-token"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			hash := tm.Hash(tt.plaintext)
+			if hash == "" {
+				t.Fatal("expected non-empty hash")
+			}
+			if len(hash) != sha256.Size*2 {
+				t.Fatalf("expected hash length %d, got %d", sha256.Size*2, len(hash))
+			}
+			if _, err := hex.DecodeString(hash); err != nil {
+				t.Fatalf("expected hex hash: %v", err)
+			}
+			if hash != tm.Hash(tt.plaintext) {
+				t.Fatal("expected deterministic hash")
+			}
+			if tt.plaintext != "" && hash == tm.Hash(tt.plaintext+"x") {
+				t.Fatal("expected different plaintext to have different hash")
+			}
+		})
+	}
+}