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forgejo/tests/integration/api_comment_test.go
Lunny Xiao bd820aa9c5
Add context cache as a request level cache (#22294) 
To avoid duplicated load of the same data in an HTTP request, we can set
a context cache to do that. i.e. Some pages may load a user from a
database with the same id in different areas on the same page. But the
code is hidden in two different deep logic. How should we share the
user? As a result of this PR, now if both entry functions accept
`context.Context` as the first parameter and we just need to refactor
`GetUserByID` to reuse the user from the context cache. Then it will not
be loaded twice on an HTTP request.

But of course, sometimes we would like to reload an object from the
database, that's why `RemoveContextData` is also exposed.

The core context cache is here. It defines a new context
```go
type cacheContext struct {
	ctx  context.Context
	data map[any]map[any]any
        lock sync.RWMutex
}

var cacheContextKey = struct{}{}

func WithCacheContext(ctx context.Context) context.Context {
	return context.WithValue(ctx, cacheContextKey, &cacheContext{
		ctx:  ctx,
		data: make(map[any]map[any]any),
	})
}
```

Then you can use the below 4 methods to read/write/del the data within
the same context.

```go
func GetContextData(ctx context.Context, tp, key any) any
func SetContextData(ctx context.Context, tp, key, value any)
func RemoveContextData(ctx context.Context, tp, key any)
func GetWithContextCache[T any](ctx context.Context, cacheGroupKey string, cacheTargetID any, f func() (T, error)) (T, error)
```

Then let's take a look at how `system.GetString` implement it.

```go
func GetSetting(ctx context.Context, key string) (string, error) {
	return cache.GetWithContextCache(ctx, contextCacheKey, key, func() (string, error) {
		return cache.GetString(genSettingCacheKey(key), func() (string, error) {
			res, err := GetSettingNoCache(ctx, key)
			if err != nil {
				return "", err
			}
			return res.SettingValue, nil
		})
	})
}
```

First, it will check if context data include the setting object with the
key. If not, it will query from the global cache which may be memory or
a Redis cache. If not, it will get the object from the database. In the
end, if the object gets from the global cache or database, it will be
set into the context cache.

An object stored in the context cache will only be destroyed after the
context disappeared.
2023-02-15 21:37:34 +08:00

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// Copyright 2017 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package integration
import (
"fmt"
"net/http"
"net/url"
"testing"
auth_model "code.gitea.io/gitea/models/auth"
"code.gitea.io/gitea/models/db"
issues_model "code.gitea.io/gitea/models/issues"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/models/unittest"
user_model "code.gitea.io/gitea/models/user"
api "code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/services/convert"
"code.gitea.io/gitea/tests"
"github.com/stretchr/testify/assert"
)
func TestAPIListRepoComments(t *testing.T) {
defer tests.PrepareTestEnv(t)()
comment := unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{},
unittest.Cond("type = ?", issues_model.CommentTypeComment))
issue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{ID: comment.IssueID})
repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: issue.RepoID})
repoOwner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID})
link, _ := url.Parse(fmt.Sprintf("/api/v1/repos/%s/%s/issues/comments", repoOwner.Name, repo.Name))
req := NewRequest(t, "GET", link.String())
resp := MakeRequest(t, req, http.StatusOK)
var apiComments []*api.Comment
DecodeJSON(t, resp, &apiComments)
assert.Len(t, apiComments, 2)
for _, apiComment := range apiComments {
c := &issues_model.Comment{ID: apiComment.ID}
unittest.AssertExistsAndLoadBean(t, c,
unittest.Cond("type = ?", issues_model.CommentTypeComment))
unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{ID: c.IssueID, RepoID: repo.ID})
}
// test before and since filters
query := url.Values{}
before := "2000-01-01T00:00:11+00:00" // unix: 946684811
since := "2000-01-01T00:00:12+00:00" // unix: 946684812
query.Add("before", before)
link.RawQuery = query.Encode()
req = NewRequest(t, "GET", link.String())
resp = MakeRequest(t, req, http.StatusOK)
DecodeJSON(t, resp, &apiComments)
assert.Len(t, apiComments, 1)
assert.EqualValues(t, 2, apiComments[0].ID)
query.Del("before")
query.Add("since", since)
link.RawQuery = query.Encode()
req = NewRequest(t, "GET", link.String())
resp = MakeRequest(t, req, http.StatusOK)
DecodeJSON(t, resp, &apiComments)
assert.Len(t, apiComments, 1)
assert.EqualValues(t, 3, apiComments[0].ID)
}
func TestAPIListIssueComments(t *testing.T) {
defer tests.PrepareTestEnv(t)()
comment := unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{},
unittest.Cond("type = ?", issues_model.CommentTypeComment))
issue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{ID: comment.IssueID})
repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: issue.RepoID})
repoOwner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID})
token := getUserToken(t, repoOwner.Name, auth_model.AccessTokenScopeRepo)
req := NewRequestf(t, "GET", "/api/v1/repos/%s/%s/issues/%d/comments?token=%s",
repoOwner.Name, repo.Name, issue.Index, token)
resp := MakeRequest(t, req, http.StatusOK)
var comments []*api.Comment
DecodeJSON(t, resp, &comments)
expectedCount := unittest.GetCount(t, &issues_model.Comment{IssueID: issue.ID},
unittest.Cond("type = ?", issues_model.CommentTypeComment))
assert.EqualValues(t, expectedCount, len(comments))
}
func TestAPICreateComment(t *testing.T) {
defer tests.PrepareTestEnv(t)()
const commentBody = "Comment body"
issue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{})
repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: issue.RepoID})
repoOwner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID})
token := getUserToken(t, repoOwner.Name, auth_model.AccessTokenScopeRepo)
urlStr := fmt.Sprintf("/api/v1/repos/%s/%s/issues/%d/comments?token=%s",
repoOwner.Name, repo.Name, issue.Index, token)
req := NewRequestWithValues(t, "POST", urlStr, map[string]string{
"body": commentBody,
})
resp := MakeRequest(t, req, http.StatusCreated)
var updatedComment api.Comment
DecodeJSON(t, resp, &updatedComment)
assert.EqualValues(t, commentBody, updatedComment.Body)
unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{ID: updatedComment.ID, IssueID: issue.ID, Content: commentBody})
}
func TestAPIGetComment(t *testing.T) {
defer tests.PrepareTestEnv(t)()
comment := unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{ID: 2})
assert.NoError(t, comment.LoadIssue(db.DefaultContext))
repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: comment.Issue.RepoID})
repoOwner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID})
token := getUserToken(t, repoOwner.Name, auth_model.AccessTokenScopeRepo)
req := NewRequestf(t, "GET", "/api/v1/repos/%s/%s/issues/comments/%d", repoOwner.Name, repo.Name, comment.ID)
MakeRequest(t, req, http.StatusOK)
req = NewRequestf(t, "GET", "/api/v1/repos/%s/%s/issues/comments/%d?token=%s", repoOwner.Name, repo.Name, comment.ID, token)
resp := MakeRequest(t, req, http.StatusOK)
var apiComment api.Comment
DecodeJSON(t, resp, &apiComment)
assert.NoError(t, comment.LoadPoster(db.DefaultContext))
expect := convert.ToComment(db.DefaultContext, comment)
assert.Equal(t, expect.ID, apiComment.ID)
assert.Equal(t, expect.Poster.FullName, apiComment.Poster.FullName)
assert.Equal(t, expect.Body, apiComment.Body)
assert.Equal(t, expect.Created.Unix(), apiComment.Created.Unix())
}
func TestAPIEditComment(t *testing.T) {
defer tests.PrepareTestEnv(t)()
const newCommentBody = "This is the new comment body"
comment := unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{},
unittest.Cond("type = ?", issues_model.CommentTypeComment))
issue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{ID: comment.IssueID})
repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: issue.RepoID})
repoOwner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID})
token := getUserToken(t, repoOwner.Name, auth_model.AccessTokenScopeRepo)
urlStr := fmt.Sprintf("/api/v1/repos/%s/%s/issues/comments/%d?token=%s",
repoOwner.Name, repo.Name, comment.ID, token)
req := NewRequestWithValues(t, "PATCH", urlStr, map[string]string{
"body": newCommentBody,
})
resp := MakeRequest(t, req, http.StatusOK)
var updatedComment api.Comment
DecodeJSON(t, resp, &updatedComment)
assert.EqualValues(t, comment.ID, updatedComment.ID)
assert.EqualValues(t, newCommentBody, updatedComment.Body)
unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{ID: comment.ID, IssueID: issue.ID, Content: newCommentBody})
}
func TestAPIDeleteComment(t *testing.T) {
defer tests.PrepareTestEnv(t)()
comment := unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{},
unittest.Cond("type = ?", issues_model.CommentTypeComment))
issue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{ID: comment.IssueID})
repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: issue.RepoID})
repoOwner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID})
token := getUserToken(t, repoOwner.Name, auth_model.AccessTokenScopeRepo)
req := NewRequestf(t, "DELETE", "/api/v1/repos/%s/%s/issues/comments/%d?token=%s",
repoOwner.Name, repo.Name, comment.ID, token)
MakeRequest(t, req, http.StatusNoContent)
unittest.AssertNotExistsBean(t, &issues_model.Comment{ID: comment.ID})
}
func TestAPIListIssueTimeline(t *testing.T) {
defer tests.PrepareTestEnv(t)()
// load comment
issue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{ID: 1})
repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: issue.RepoID})
repoOwner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID})
// make request
req := NewRequestf(t, "GET", "/api/v1/repos/%s/%s/issues/%d/timeline",
repoOwner.Name, repo.Name, issue.Index)
resp := MakeRequest(t, req, http.StatusOK)
// check if lens of list returned by API and
// lists extracted directly from DB are the same
var comments []*api.TimelineComment
DecodeJSON(t, resp, &comments)
expectedCount := unittest.GetCount(t, &issues_model.Comment{IssueID: issue.ID})
assert.EqualValues(t, expectedCount, len(comments))
}
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