fix: invalid schema for function 'func_name': None is not of type 'object' (#429)(#432) (#434)

* fix: invalid schema for function 'func_name': None is not of type 'object' (#429)(#432)

* test: add integration test for function call (#429)(#432)

* style: remove duplicate import (#429)(#432)

api_integration_test.go

@@ -11,6 +11,7 @@ import (
 
 	. "github.com/sashabaranov/go-openai"
 	"github.com/sashabaranov/go-openai/internal/test/checks"
+	"github.com/sashabaranov/go-openai/jsonschema"
 )
 
 func TestAPI(t *testing.T) {
@@ -100,6 +101,37 @@ func TestAPI(t *testing.T) {
 	if counter == 0 {
 		t.Error("Stream did not return any responses")
 	}
+
+	_, err = c.CreateChatCompletion(
+		context.Background(),
+		ChatCompletionRequest{
+			Model: GPT3Dot5Turbo,
+			Messages: []ChatCompletionMessage{
+				{
+					Role:    ChatMessageRoleUser,
+					Content: "What is the weather like in Boston?",
+				},
+			},
+			Functions: []FunctionDefinition{{
+				Name: "get_current_weather",
+				Parameters: jsonschema.Definition{
+					Type: jsonschema.Object,
+					Properties: map[string]jsonschema.Definition{
+						"location": {
+							Type:        jsonschema.String,
+							Description: "The city and state, e.g. San Francisco, CA",
+						},
+						"unit": {
+							Type: jsonschema.String,
+							Enum: []string{"celsius", "fahrenheit"},
+						},
+					},
+					Required: []string{"location"},
+				},
+			}},
+		},
+	)
+	checks.NoError(t, err, "CreateChatCompletion (with functions) returned error")
 }
 
 func TestAPIError(t *testing.T) {

jsonschema/json.go

@@ -36,23 +36,14 @@ type Definition struct {
 	Items *Definition `json:"items,omitempty"`
 }
 
-func (d *Definition) MarshalJSON() ([]byte, error) {
-	d.initializeProperties()
-	return json.Marshal(*d)
-}
-
-func (d *Definition) initializeProperties() {
+func (d Definition) MarshalJSON() ([]byte, error) {
 	if d.Properties == nil {
 		d.Properties = make(map[string]Definition)
-		return
-	}
-
-	for k, v := range d.Properties {
-		if v.Properties == nil {
-			v.Properties = make(map[string]Definition)
-		} else {
-			v.initializeProperties()
-		}
-		d.Properties[k] = v
 	}
+	type Alias Definition
+	return json.Marshal(struct {
+		Alias
+	}{
+		Alias: (Alias)(d),
+	})
 }

jsonschema/json_test.go

@@ -172,30 +172,40 @@ func TestDefinition_MarshalJSON(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			gotBytes, err := json.Marshal(&tt.def)
-			if err != nil {
-				t.Errorf("Failed to Marshal JSON: error = %v", err)
-				return
-			}
-
-			var got map[string]interface{}
-			err = json.Unmarshal(gotBytes, &got)
-			if err != nil {
-				t.Errorf("Failed to Unmarshal JSON: error =  %v", err)
-				return
-			}
-
 			wantBytes := []byte(tt.want)
 			var want map[string]interface{}
-			err = json.Unmarshal(wantBytes, &want)
+			err := json.Unmarshal(wantBytes, &want)
 			if err != nil {
 				t.Errorf("Failed to Unmarshal JSON: error = %v", err)
 				return
 			}
 
+			got := structToMap(t, tt.def)
+			gotPtr := structToMap(t, &tt.def)
+
 			if !reflect.DeepEqual(got, want) {
 				t.Errorf("MarshalJSON() got = %v, want %v", got, want)
 			}
+			if !reflect.DeepEqual(gotPtr, want) {
+				t.Errorf("MarshalJSON() gotPtr = %v, want %v", gotPtr, want)
+			}
 		})
 	}
 }
+
+func structToMap(t *testing.T, v any) map[string]any {
+	t.Helper()
+	gotBytes, err := json.Marshal(v)
+	if err != nil {
+		t.Errorf("Failed to Marshal JSON: error = %v", err)
+		return nil
+	}
+
+	var got map[string]interface{}
+	err = json.Unmarshal(gotBytes, &got)
+	if err != nil {
+		t.Errorf("Failed to Unmarshal JSON: error =  %v", err)
+		return nil
+	}
+	return got
+}