chore: import upstream snapshot with attribution

tests/cloudsql/cloud_sql_get_instances_test.go

@@ -0,0 +1,254 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cloudsql
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"reflect"
+	"regexp"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/googleapis/mcp-toolbox/internal/testutils"
+	"github.com/googleapis/mcp-toolbox/tests"
+)
+
+var (
+	getInstancesToolType = "cloud-sql-get-instance"
+)
+
+type getInstancesTransport struct {
+	transport http.RoundTripper
+	url       *url.URL
+}
+
+func (t *getInstancesTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	if strings.HasPrefix(req.URL.String(), "https://sqladmin.googleapis.com") {
+		req.URL.Scheme = t.url.Scheme
+		req.URL.Host = t.url.Host
+	}
+	return t.transport.RoundTrip(req)
+}
+
+type instance struct {
+	Name string `json:"name"`
+	Kind string `json:"kind"`
+}
+
+type handler struct {
+	mu        sync.Mutex
+	instances map[string]*instance
+	t         *testing.T
+}
+
+func (h *handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	h.mu.Lock()
+	defer h.mu.Unlock()
+
+	if !strings.Contains(r.UserAgent(), "genai-toolbox/") {
+		h.t.Errorf("User-Agent header not found")
+	}
+
+	if !strings.HasPrefix(r.URL.Path, "/v1/projects/") {
+		http.Error(w, "unexpected path", http.StatusBadRequest)
+		return
+	}
+
+	// The format is /v1/projects/{project}/instances/{instance_name}
+	// We only care about the instance_name for the test
+	parts := regexp.MustCompile("/").Split(r.URL.Path, -1)
+	instanceName := parts[len(parts)-1]
+
+	inst, ok := h.instances[instanceName]
+	if !ok {
+		http.NotFound(w, r)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(inst); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+	}
+}
+
+func TestGetInstancesToolEndpoints(t *testing.T) {
+	h := &handler{
+		instances: map[string]*instance{
+			"instance-1": {Name: "instance-1", Kind: "sql#instance"},
+		},
+		t: t,
+	}
+	server := httptest.NewServer(h)
+	defer server.Close()
+
+	serverURL, err := url.Parse(server.URL)
+	if err != nil {
+		t.Fatalf("failed to parse server URL: %v", err)
+	}
+
+	originalTransport := http.DefaultClient.Transport
+	if originalTransport == nil {
+		originalTransport = http.DefaultTransport
+	}
+	http.DefaultClient.Transport = &getInstancesTransport{
+		transport: originalTransport,
+		url:       serverURL,
+	}
+	t.Cleanup(func() {
+		http.DefaultClient.Transport = originalTransport
+	})
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
+	defer cancel()
+
+	args := []string{"--enable-api"}
+
+	toolsFile := getToolsConfig()
+	cmd, cleanup, err := tests.StartCmd(ctx, toolsFile, args...)
+	if err != nil {
+		t.Fatalf("command initialization returned an error: %s", err)
+	}
+	defer cleanup()
+
+	waitCtx, cancel := context.WithTimeout(ctx, 10*time.Second)
+	defer cancel()
+	out, err := testutils.WaitForString(waitCtx, regexp.MustCompile(`Server ready to serve`), cmd.Out)
+	if err != nil {
+		t.Logf("toolbox command logs: \n%s", out)
+		t.Fatalf("toolbox didn't start successfully: %s", err)
+	}
+
+	tcs := []struct {
+		name          string
+		toolName      string
+		body          string
+		want          string
+		expectError   bool
+		wantSubstring bool
+	}{
+		{
+			name:     "successful get instance",
+			toolName: "get-instance-1",
+			body:     `{"projectId": "p1", "instanceId": "instance-1"}`,
+			want:     `{"name":"instance-1","kind":"sql#instance"}`,
+		},
+		{
+			name:        "failed get instance",
+			toolName:    "get-instance-2",
+			body:        `{"projectId": "p1", "instanceId": "instance-2"}`,
+			expectError: true,
+		},
+	}
+
+	for _, tc := range tcs {
+		t.Run(tc.name, func(t *testing.T) {
+			api := fmt.Sprintf("http://127.0.0.1:5000/api/tool/%s/invoke", tc.toolName)
+			req, err := http.NewRequest(http.MethodPost, api, bytes.NewBufferString(tc.body))
+			if err != nil {
+				t.Fatalf("unable to create request: %s", err)
+			}
+			req.Header.Add("Content-type", "application/json")
+			resp, err := http.DefaultClient.Do(req)
+			if err != nil {
+				t.Fatalf("unable to send request: %s", err)
+			}
+			defer resp.Body.Close()
+
+			if tc.expectError {
+				if resp.StatusCode == http.StatusOK {
+					t.Fatal("expected error but got status 200")
+				}
+				return
+			}
+
+			if resp.StatusCode != http.StatusOK {
+				bodyBytes, _ := io.ReadAll(resp.Body)
+				t.Fatalf("response status code is not 200, got %d: %s", resp.StatusCode, string(bodyBytes))
+			}
+
+			var result struct {
+				Result any `json:"result"`
+			}
+			if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
+				t.Fatalf("failed to decode response: %v", err)
+			}
+
+			var gotBytes []byte
+			if s, ok := result.Result.(string); ok {
+				gotBytes = []byte(s)
+			} else {
+				var err error
+				gotBytes, err = json.Marshal(result.Result)
+				if err != nil {
+					t.Fatalf("failed to marshal result: %v", err)
+				}
+			}
+
+			if tc.wantSubstring {
+				if !bytes.Contains(gotBytes, []byte(tc.want)) {
+					t.Fatalf("unexpected result: got %q, want substring %q", string(gotBytes), tc.want)
+				}
+				return
+			}
+
+			var got, want map[string]any
+			if err := json.Unmarshal(gotBytes, &got); err != nil {
+				t.Fatalf("failed to unmarshal result: %v", err)
+			}
+			if err := json.Unmarshal([]byte(tc.want), &want); err != nil {
+				t.Fatalf("failed to unmarshal want: %v", err)
+			}
+
+			if !reflect.DeepEqual(got, want) {
+				t.Fatalf("unexpected result: got %+v, want %+v", got, want)
+			}
+		})
+	}
+}
+
+func getToolsConfig() map[string]any {
+	return map[string]any{
+		"sources": map[string]any{
+			"my-cloud-sql-source": map[string]any{
+				"type": "cloud-sql-admin",
+			},
+			"my-invalid-cloud-sql-source": map[string]any{
+				"type":           "cloud-sql-admin",
+				"useClientOAuth": true,
+			},
+		},
+		"tools": map[string]any{
+			"get-instance-1": map[string]any{
+				"type":        getInstancesToolType,
+				"description": "get instance 1",
+				"source":      "my-cloud-sql-source",
+			},
+			"get-instance-2": map[string]any{
+				"type":        getInstancesToolType,
+				"description": "get instance 2",
+				"source":      "my-invalid-cloud-sql-source",
+			},
+		},
+	}
+}