test: remove unnecessary test

Author: ssncferreira

provider/anthropic_test.go

@@ -62,52 +62,6 @@ func TestAnthropic_CreateInterceptor(t *testing.T) {
 		assert.Contains(t, err.Error(), "unmarshal request body")
 	})
 
-	t.Run("Messages_ForwardsAnthropicBetaHeaderToUpstream", func(t *testing.T) {
-		t.Parallel()
-
-		var receivedHeaders http.Header
-
-		// Mock upstream that captures headers.
-		mockUpstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			receivedHeaders = r.Header.Clone()
-			w.Header().Set("Content-Type", "application/json")
-			w.WriteHeader(http.StatusOK)
-			_, _ = w.Write([]byte(`{"id":"msg-123","type":"message","role":"assistant","content":[{"type":"text","text":"Hello!"}],"model":"claude-opus-4-5","stop_reason":"end_turn","usage":{"input_tokens":10,"output_tokens":5}}`))
-		}))
-		t.Cleanup(mockUpstream.Close)
-
-		provider := NewAnthropic(config.Anthropic{
-			BaseURL: mockUpstream.URL,
-			Key:     "test-key",
-		}, nil)
-
-		// Use a realistic multi-beta value as sent by Claude Code clients.
-		betaHeader := "claude-code-20250219,adaptive-thinking-2026-01-28,context-management-2025-06-27,prompt-caching-scope-2026-01-05,effort-2025-11-24"
-
-		body := `{"model": "claude-opus-4-5", "max_tokens": 1024, "messages": [{"role": "user", "content": "hello"}], "stream": false}`
-		req := httptest.NewRequest(http.MethodPost, routeMessages, bytes.NewBufferString(body))
-		req.Header.Set("Anthropic-Beta", betaHeader)
-		req.Header.Set("X-Custom-Header", "should-not-forward")
-		w := httptest.NewRecorder()
-
-		interceptor, err := provider.CreateInterceptor(w, req, testTracer)
-		require.NoError(t, err)
-		require.NotNil(t, interceptor)
-
-		logger := slog.Make()
-		interceptor.Setup(logger, &testutil.MockRecorder{}, nil)
-
-		processReq := httptest.NewRequest(http.MethodPost, routeMessages, nil)
-		err = interceptor.ProcessRequest(w, processReq)
-		require.NoError(t, err)
-
-		// Verify the full Anthropic-Beta header (all betas) was forwarded unchanged.
-		assert.Equal(t, betaHeader, receivedHeaders.Get("Anthropic-Beta"))
-
-		// Verify non-Anthropic headers are not forwarded.
-		assert.Empty(t, receivedHeaders.Get("X-Custom-Header"), "non-Anthropic headers should not be forwarded")
-	})
-
 	t.Run("UnknownRoute", func(t *testing.T) {
 		t.Parallel()