Sub2API v1.0 - AI API 网关（二开初始版本，基于上游 Wei-Shaw/sub2api）

backend/internal/service/image_generation_intent_explicit_test.go

@@ -0,0 +1,63 @@
+package service
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestIsExplicitImageGenerationIntent_IgnoresPassiveNamespace(t *testing.T) {
+	body := []byte(`{
+		"model": "gpt-5.5",
+		"input": [{"type":"message","role":"user","content":"hello"}],
+		"tools": [
+			{"type":"function","name":"Read"},
+			{"type":"namespace","name":"image_gen","tools":[{"type":"function","name":"imagegen"}]}
+		],
+		"tool_choice": "auto"
+	}`)
+
+	assert.False(t, IsExplicitImageGenerationIntent("/v1/responses", "gpt-5.5", body),
+		"passive image_gen namespace should NOT be explicit image intent")
+
+	assert.True(t, IsImageGenerationIntent("/v1/responses", "gpt-5.5", body),
+		"passive image_gen namespace SHOULD be general image intent (for permission check)")
+}
+
+func TestIsExplicitImageGenerationIntent_DetectsNativeTool(t *testing.T) {
+	body := []byte(`{
+		"model": "gpt-5.5",
+		"tools": [{"type":"image_generation","model":"gpt-image-2"}],
+		"tool_choice": "auto"
+	}`)
+
+	assert.True(t, IsExplicitImageGenerationIntent("/v1/responses", "gpt-5.5", body),
+		"native image_generation tool IS explicit intent")
+}
+
+func TestIsExplicitImageGenerationIntent_DetectsImageModel(t *testing.T) {
+	assert.True(t, IsExplicitImageGenerationIntent("/v1/responses", "gpt-image-2", nil),
+		"image model IS explicit intent")
+}
+
+func TestIsExplicitImageGenerationIntent_DetectsImageEndpoint(t *testing.T) {
+	assert.True(t, IsExplicitImageGenerationIntent("/v1/images/generations", "gpt-5.5", nil),
+		"image endpoint IS explicit intent")
+}
+
+func TestIsExplicitImageGenerationIntent_DetectsExplicitToolChoice(t *testing.T) {
+	body := []byte(`{"model":"gpt-5.5","tools":[{"type":"function","name":"Read"}],"tool_choice":"image_generation"}`)
+	assert.True(t, IsExplicitImageGenerationIntent("/v1/responses", "gpt-5.5", body),
+		"explicit tool_choice selecting image_generation IS explicit intent")
+}
+
+func TestIsExplicitImageGenerationIntent_PlainTextRequest(t *testing.T) {
+	body := []byte(`{
+		"model": "gpt-5.5",
+		"input": "hello",
+		"tools": [{"type":"function","name":"Read"}]
+	}`)
+
+	assert.False(t, IsExplicitImageGenerationIntent("/v1/responses", "gpt-5.5", body),
+		"plain text request should NOT be explicit image intent")
+}