[英]How to correctly set Mock Row and Query for go-sqlmock
我正在golang
中設置測試。
我使用go-sqlmock
測試 mysql 連接。
但是sqlmock.NewRows
和mock.ExpectQuery
不能很好地處理錯誤。
我想知道如何解決這個錯誤。
server side: golang
db: mysql
web framework: gin
dao.go
func GetSingleArticleDao(c *gin.Context, db *sql.DB) (util.Article, *sql.Rows) {
id := c.Params.ByName("id")
article := util.Article{}
errArticle := db.QueryRow("SELECT * FROM articles WHERE id = ?", id).Scan(&article.ID, &article.UUID, &article.TITLE, &article.CONTENT)
if errArticle != nil {
panic(errArticle.Error())
}
rows, errImage := db.Query("SELECT image_name FROM images WHERE article_uuid = ?", article.UUID)
if errImage != nil {
panic(errImage.Error())
}
return article, rows
}
dao_test.go
func TestGetSingleArticleDao(t *testing.T) {
db, mock, err := sqlmock.New()
if err != nil {
t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
}
defer db.Close()
articleMockRows := sqlmock.NewRows([]string{"id", "uuid", "title", "content"}).
AddRow("1", "bea1b24d-0627-4ea0-aa2b-8af4c6c2a41c", "test", "test")
mock.ExpectQuery("SELECT (.+) FROM articles where id=\\?").
WithArgs("1").
WillReturnRows(articleMockRows)
imageMockRows := sqlmock.NewRows([]string{"article_uuid", "image_name"}).
AddRow("bea1b24d-0627-4ea0-aa2b-8af4c6c2a41c", "1a90696f-4fe7-48f5-81a5-ca72c129f4b0").
AddRow("bea1b24d-0627-4ea0-aa2b-8af4c6c2a41c", "3d997272-468f-4b66-91db-00c39f0ef717")
mock.ExpectQuery("^SELECT (.+) FROM images*").
WithArgs("bea1b24d-0627-4ea0-aa2b-8af4c6c2a41c").
WillReturnRows(imageMockRows)
resp := httptest.NewRecorder()
gin.SetMode(gin.TestMode)
ctx, _ := gin.CreateTestContext(resp)
article, imageRows := GetSingleArticleDao(ctx, db)
for imageRows.Next() {
imageName := util.ImageName{}
err := imageRows.Scan(&imageName.NAME)
if err != nil {
panic(err.Error())
}
article.IMAGENAMES = append(article.IMAGENAMES, imageName)
}
expectedArticle := util.Article{
ID: 1,
UUID: "bea1b24d-0627-4ea0-aa2b-8af4c6c2a41c",
TITLE: "test",
CONTENT: "test",
}
imageName1 := util.ImageName{
NAME: "1a90696f-4fe7-48f5-81a5-ca72c129f4b0",
}
expectedArticle.IMAGENAMES = append(expectedArticle.IMAGENAMES, imageName1)
imageName2 := util.ImageName{
NAME: "3d997272-468f-4b66-91db-00c39f0ef717",
}
expectedArticle.IMAGENAMES = append(expectedArticle.IMAGENAMES, imageName2)
assert.Equal(t, expectedArticle, article)
}
我希望go test -v
運行沒有錯誤。
但實際並非如此。
這是錯誤。
$ go test -v
=== RUN TestGetSingleArticleDao
--- FAIL: TestGetSingleArticleDao (0.00s)
panic: Query: could not match actual sql: "SELECT * FROM articles WHERE id = ?" with expected regexp "SELECT (.+) FROM articles where id=\?" [recovered]
panic: Query: could not match actual sql: "SELECT * FROM articles WHERE id = ?" with expected regexp "SELECT (.+) FROM articles where id=\?"
goroutine 34 [running]:
testing.tRunner.func1(0xc00022c000)
/usr/local/go/src/testing/testing.go:830 +0x392
panic(0x165a960, 0xc0001bc4a0)
/usr/local/go/src/runtime/panic.go:522 +0x1b5
article/api/dao.GetSingleArticleDao(0xc000214160, 0xc0002180c0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
/Users/jpskgc/article/api/dao/dao.go:26 +0x35d
article/api/dao.TestGetSingleArticleDao(0xc00022c000)
/Users/jpskgc/article/api/dao/dao_test.go:92 +0x750
testing.tRunner(0xc00022c000, 0x1788730)
/usr/local/go/src/testing/testing.go:865 +0xc0
created by testing.(*T).Run
/usr/local/go/src/testing/testing.go:916 +0x35a
exit status 2
FAIL article/api/dao 0.030s
這是由以下部分引起的
resp := httptest.NewRecorder()
gin.SetMode(gin.TestMode)
ctx, _ := gin.CreateTestContext(resp)
我應該在 ctx 中添加"id" :"1"
參數。
所以我把那部分改成這樣:
param := gin.Param{"id", "1"}
params := gin.Params{param}
req, _ := http.NewRequest("GET", "/article/1", nil)
var context *gin.Context
context = &gin.Context{Request: req, Params: params}
您可能需要使用regexp.QuoteMeta()
來轉義查詢中的所有正則表達式元字符,而不是使用\\
:
mock.ExpectQuery(regexp.QuoteMeta("SELECT (.+) FROM articles FROM articles WHERE id = ?")).
WithArgs("1").
WillReturnRows(articleMockRows)
只是一點提示,而不是像這樣:
mock.ExpectQuery("SELECT (.+) FROM articles where id=\\?").
WithArgs("1").
WillReturnRows(articleMockRows)
你可以這樣嘗試:
mock.ExpectQuery("SELECT (.+) FROM articles").
WithArgs("1").
WillReturnRows(articleMockRows)
這取決於您要在查詢中檢查什么,但對我來說,最重要的是檢查我的查詢是否選擇了正確的表。 我大多不在乎使用哪個屬性來過濾數據。 如果您認為過濾器很重要,那么這里還有一些示例:
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