test(label,milestone): cover tool registration and handler paths

Add operation/label/label_test.go verifying the label_read/label_write
tools register under the "label" scope with the expected method enums
and read/write classification, plus httptest coverage for
list_repo_labels and create_repo_label. Extend
operation/milestone/milestone_test.go with the equivalent registration
assertions and an httptest-backed list milestones test.

Co-Authored-By: Codet <codet@commitgo.dev> (GPT-5-Codex)

operation/label/label_test.go

@@ -0,0 +1,193 @@
+package label
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"reflect"
+	"sort"
+	"sync"
+	"testing"
+
+	"gitea.com/gitea/gitea-mcp/pkg/flag"
+	"gitea.com/gitea/gitea-mcp/pkg/tool"
+
+	"github.com/modelcontextprotocol/go-sdk/mcp"
+)
+
+func Test_Tool_Registration(t *testing.T) {
+	if got := Tool.Scope(); got != "label" {
+		t.Fatalf("Scope() = %q, want %q", got, "label")
+	}
+
+	readTools := Tool.ReadTools()
+	if len(readTools) != 1 || readTools[0].Tool.Name != LabelReadToolName {
+		t.Fatalf("ReadTools() = %v, want exactly [%s]", toolNames(readTools), LabelReadToolName)
+	}
+	if !readTools[0].Tool.Annotations.ReadOnlyHint {
+		t.Fatalf("%s must be marked read-only", LabelReadToolName)
+	}
+
+	writeTools := Tool.WriteTools()
+	if len(writeTools) != 1 || writeTools[0].Tool.Name != LabelWriteToolName {
+		t.Fatalf("WriteTools() = %v, want exactly [%s]", toolNames(writeTools), LabelWriteToolName)
+	}
+	if writeTools[0].Tool.Annotations.ReadOnlyHint {
+		t.Fatalf("%s must not be marked read-only", LabelWriteToolName)
+	}
+
+	assertMethodEnum(t, LabelReadTool, []string{"list_repo_labels", "get_repo_label", "list_org_labels"})
+	assertMethodEnum(t, LabelWriteTool, []string{
+		"create_repo_label", "edit_repo_label", "delete_repo_label",
+		"create_org_label", "edit_org_label", "delete_org_label",
+	})
+}
+
+func toolNames(tools []tool.ServerTool) []string {
+	names := make([]string, len(tools))
+	for i, serverTool := range tools {
+		names[i] = serverTool.Tool.Name
+	}
+	return names
+}
+
+func assertMethodEnum(t *testing.T, definition *mcp.Tool, want []string) {
+	t.Helper()
+
+	schema, ok := definition.InputSchema.(map[string]any)
+	if !ok {
+		t.Fatalf("%s: input schema = %T, want map[string]any", definition.Name, definition.InputSchema)
+	}
+	properties, ok := schema["properties"].(map[string]any)
+	if !ok {
+		t.Fatalf("%s: properties = %T, want map[string]any", definition.Name, schema["properties"])
+	}
+	method, ok := properties["method"].(map[string]any)
+	if !ok {
+		t.Fatalf("%s: method property = %T, want map[string]any", definition.Name, properties["method"])
+	}
+	enum, ok := method["enum"].([]string)
+	if !ok {
+		t.Fatalf("%s: method enum = %T, want []string", definition.Name, method["enum"])
+	}
+
+	got := append([]string{}, enum...)
+	sort.Strings(got)
+	wantSorted := append([]string{}, want...)
+	sort.Strings(wantSorted)
+	if !reflect.DeepEqual(got, wantSorted) {
+		t.Fatalf("%s: method enum = %v, want %v", definition.Name, enum, want)
+	}
+}
+
+func Test_labelReadFn_listRepoLabels(t *testing.T) {
+	const (
+		owner = "octo"
+		repo  = "demo"
+	)
+
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/api/v1/version":
+			_, _ = w.Write([]byte(`{"version":"1.12.0"}`))
+		case fmt.Sprintf("/api/v1/repos/%s/%s/labels", owner, repo):
+			_, _ = w.Write([]byte(`[{"id":1,"name":"bug","color":"ff0000","description":"a bug"}]`))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	withTestFlags(t, server.URL)
+
+	result, err := labelReadFn(context.Background(), map[string]any{
+		"method": "list_repo_labels",
+		"owner":  owner,
+		"repo":   repo,
+	})
+	if err != nil || result.IsError {
+		t.Fatalf("list_repo_labels err=%v result=%v", err, result)
+	}
+
+	var labels []map[string]any
+	decodeResult(t, result, &labels)
+	if len(labels) != 1 || labels[0]["name"] != "bug" {
+		t.Fatalf("unexpected labels: %v", labels)
+	}
+}
+
+func Test_labelWriteFn_createRepoLabel(t *testing.T) {
+	const (
+		owner = "octo"
+		repo  = "demo"
+	)
+
+	var (
+		mu   sync.Mutex
+		body map[string]any
+	)
+
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.URL.Path == "/api/v1/version":
+			_, _ = w.Write([]byte(`{"version":"1.12.0"}`))
+		case r.URL.Path == fmt.Sprintf("/api/v1/repos/%s/%s/labels", owner, repo) && r.Method == http.MethodPost:
+			mu.Lock()
+			_ = json.NewDecoder(r.Body).Decode(&body)
+			mu.Unlock()
+			_, _ = w.Write([]byte(`{"id":7,"name":"bug","color":"ff0000","description":"a bug"}`))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	withTestFlags(t, server.URL)
+
+	result, err := labelWriteFn(context.Background(), map[string]any{
+		"method":      "create_repo_label",
+		"owner":       owner,
+		"repo":        repo,
+		"name":        "bug",
+		"color":       "ff0000",
+		"description": "a bug",
+	})
+	if err != nil || result.IsError {
+		t.Fatalf("create_repo_label err=%v result=%v", err, result)
+	}
+
+	mu.Lock()
+	defer mu.Unlock()
+	if body["name"] != "bug" || body["color"] != "ff0000" {
+		t.Fatalf("unexpected request body: %v", body)
+	}
+
+	var label map[string]any
+	decodeResult(t, result, &label)
+	if label["name"] != "bug" {
+		t.Fatalf("unexpected label: %v", label)
+	}
+}
+
+func withTestFlags(t *testing.T, host string) {
+	t.Helper()
+	origHost, origToken, origVersion := flag.Host, flag.Token, flag.Version
+	flag.Host, flag.Token, flag.Version = host, "", "test"
+	t.Cleanup(func() { flag.Host, flag.Token, flag.Version = origHost, origToken, origVersion })
+}
+
+func decodeResult(t *testing.T, result *mcp.CallToolResult, out any) {
+	t.Helper()
+	if len(result.Content) != 1 {
+		t.Fatalf("result content = %v, want exactly one item", result.Content)
+	}
+	text, ok := result.Content[0].(*mcp.TextContent)
+	if !ok {
+		t.Fatalf("result content = %T, want *mcp.TextContent", result.Content[0])
+	}
+	if err := json.Unmarshal([]byte(text.Text), out); err != nil {
+		t.Fatalf("decode result: %v", err)
+	}
+}

operation/milestone/milestone_test.go

@@ -7,14 +7,122 @@ import (
 	"maps"
 	"net/http"
 	"net/http/httptest"
+	"reflect"
+	"sort"
 	"sync"
 	"testing"
 
 	"gitea.com/gitea/gitea-mcp/pkg/flag"
+	"gitea.com/gitea/gitea-mcp/pkg/tool"
 
 	"github.com/modelcontextprotocol/go-sdk/mcp"
 )
 
+func Test_Tool_Registration(t *testing.T) {
+	if got := Tool.Scope(); got != "milestone" {
+		t.Fatalf("Scope() = %q, want %q", got, "milestone")
+	}
+
+	readTools := Tool.ReadTools()
+	if len(readTools) != 1 || readTools[0].Tool.Name != MilestoneReadToolName {
+		t.Fatalf("ReadTools() = %v, want exactly [%s]", toolNames(readTools), MilestoneReadToolName)
+	}
+	if !readTools[0].Tool.Annotations.ReadOnlyHint {
+		t.Fatalf("%s must be marked read-only", MilestoneReadToolName)
+	}
+
+	writeTools := Tool.WriteTools()
+	if len(writeTools) != 1 || writeTools[0].Tool.Name != MilestoneWriteToolName {
+		t.Fatalf("WriteTools() = %v, want exactly [%s]", toolNames(writeTools), MilestoneWriteToolName)
+	}
+	if writeTools[0].Tool.Annotations.ReadOnlyHint {
+		t.Fatalf("%s must not be marked read-only", MilestoneWriteToolName)
+	}
+
+	assertMethodEnum(t, MilestoneReadTool, []string{"get", "list"})
+	assertMethodEnum(t, MilestoneWriteTool, []string{"create", "update", "edit", "delete"})
+}
+
+func toolNames(tools []tool.ServerTool) []string {
+	names := make([]string, len(tools))
+	for i, serverTool := range tools {
+		names[i] = serverTool.Tool.Name
+	}
+	return names
+}
+
+func assertMethodEnum(t *testing.T, definition *mcp.Tool, want []string) {
+	t.Helper()
+
+	schema, ok := definition.InputSchema.(map[string]any)
+	if !ok {
+		t.Fatalf("%s: input schema = %T, want map[string]any", definition.Name, definition.InputSchema)
+	}
+	properties, ok := schema["properties"].(map[string]any)
+	if !ok {
+		t.Fatalf("%s: properties = %T, want map[string]any", definition.Name, schema["properties"])
+	}
+	method, ok := properties["method"].(map[string]any)
+	if !ok {
+		t.Fatalf("%s: method property = %T, want map[string]any", definition.Name, properties["method"])
+	}
+	enum, ok := method["enum"].([]string)
+	if !ok {
+		t.Fatalf("%s: method enum = %T, want []string", definition.Name, method["enum"])
+	}
+
+	got := append([]string{}, enum...)
+	sort.Strings(got)
+	wantSorted := append([]string{}, want...)
+	sort.Strings(wantSorted)
+	if !reflect.DeepEqual(got, wantSorted) {
+		t.Fatalf("%s: method enum = %v, want %v", definition.Name, enum, want)
+	}
+}
+
+func Test_listMilestonesFn(t *testing.T) {
+	const (
+		owner = "octo"
+		repo  = "demo"
+	)
+
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/api/v1/version":
+			_, _ = w.Write([]byte(`{"version":"1.12.0"}`))
+		case fmt.Sprintf("/api/v1/repos/%s/%s/milestones", owner, repo):
+			_, _ = w.Write([]byte(`[{"id":1,"title":"v1","state":"open"}]`))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	origHost, origToken, origVersion := flag.Host, flag.Token, flag.Version
+	flag.Host, flag.Token, flag.Version = server.URL, "", "test"
+	defer func() { flag.Host, flag.Token, flag.Version = origHost, origToken, origVersion }()
+
+	result, err := listMilestonesFn(context.Background(), map[string]any{
+		"owner": owner,
+		"repo":  repo,
+	})
+	if err != nil || result.IsError {
+		t.Fatalf("list err=%v result=%v", err, result)
+	}
+
+	text, ok := result.Content[0].(*mcp.TextContent)
+	if !ok {
+		t.Fatalf("result content = %T, want *mcp.TextContent", result.Content[0])
+	}
+	var milestones []map[string]any
+	if err := json.Unmarshal([]byte(text.Text), &milestones); err != nil {
+		t.Fatalf("decode result: %v", err)
+	}
+	if len(milestones) != 1 || milestones[0]["title"] != "v1" {
+		t.Fatalf("unexpected milestones: %v", milestones)
+	}
+}
+
 func Test_milestoneWriteFn_dueOn(t *testing.T) {
 	const (
 		owner = "octo"