go - sqlmock 与查询不匹配，但查询相同且日志输出显示相同

Question

我正在尝试使用 sqlmock 使用 Gorm 为某些代码编写测试。我想出为我的插入功能编写测试，但现在我正在努力让更新工作。

工作流的第一部分只是从数据库中查询记录。即使日志输出显示它们相同，我也无法让它与我的 SQL 匹配。

这是错误消息:

(/path/to/my/project/database.go:263)
[2020-01-08 10:29:40]  Query: could not match actual sql: "SELECT * FROM "storage_pools" WHERE "storage_pools"."deleted_at" IS NULL AND ((poolid = ?)) ORDER BY "storage_pools"."id" ASC LIMIT 1" with expected regexp "SELECT * FROM "storage_pools" WHERE "storage_pools"."deleted_at" IS NULL AND ((poolid = ?)) ORDER BY "storage_pools"."id" ASC LIMIT 1"

我也尝试使用 ExpectQuery 的 ExpectExec 插入。

    for _, c := range cases {

        db, mock, err := sqlmock.New()
        if err != nil {
            t.Fatal(err)
        }

        DB, err := gorm.Open("sqlite3", db)
        if err != nil {
            t.Fatal(err)
        }
        DB.LogMode(true)

        mock.ExpectQuery(`SELECT * FROM "storage_pools" WHERE "storage_pools"."deleted_at" IS NULL AND ((poolid = ?)) ORDER BY "storage_pools"."id" ASC LIMIT 1`)

        err = UpdateStoragePool(DB, &c.givenPool)
        if !reflect.DeepEqual(c.wantedError, err) {
            t.Fatalf("expecting errror %q, got %q", c.wantedError, err)
        }

        // if we didn't have any errors during the tx, check all expectations were met
        if c.wantedError == nil {
            if err := mock.ExpectationsWereMet(); err != nil {
                t.Fatalf(err.Error())
            }
        }

    }

我也试过:

mock.ExpectQuery(`SELECT * FROM "storage_pools" WHERE "storage_pools"."deleted_at" IS NULL AND ((poolid = '1')) ORDER BY "storage_pools"."id" ASC LIMIT 1`).WithArgs(1)  

mock.ExpectExec(`SELECT * FROM "storage_pools" WHERE "storage_pools"."deleted_at" IS NULL AND ((poolid = ?)) ORDER BY "storage_pools"."id" ASC LIMIT 1`)  

mock.ExpectExec(`SELECT * FROM "storage_pools" WHERE "storage_pools"."deleted_at" IS NULL AND ((poolid = '1')) ORDER BY "storage_pools"."id" ASC LIMIT 1`).WithArgs(1)

任何人都知道我在这里做错了什么？

* 更新 *

由于某种原因，这不适用于 select 语句:

        mock.ExpectExec(`SELECT \* FROM "storage_pools"`).
            WithArgs(c.givenPool.PoolId).WillReturnResult(sqlmock.NewResult(1, 1))

[2020-01-13 10:32:21]  call to Query 'SELECT * FROM "storage_pools"  WHERE "storage_pools"."deleted_at" IS NULL AND ((poolid = ?)) ORDER BY "storage_pools"."id" ASC LIMIT 1' with args [{Name: Ordinal:1 Value:1}], was not expected, next expectation is: ExpectedExec => expecting Exec or ExecContext which:
  - matches sql: 'SELECT \* FROM "storage_pools"'
  - is with arguments:
    0 - 1
  - should return Result having:
      LastInsertId: 1
      RowsAffected: 1

这确实有效，但现在我遇到了一个新问题。对于初学者来说，Gorm 出于某种原因正在执行 2 个选择语句......第一个工作并找到行，第二个查询没有找到相同的行。我在这里不知所措。即将放弃这个图书馆。我本可以在我们尝试让它工作的时间里写我自己的。

        db, mock, err := sqlmock.New(sqlmock.QueryMatcherOption(sqlmock.QueryMatcherEqual))
        if err != nil {
            t.Fatal(err)
        }

        DB, err := gorm.Open("postgres", db)
        if err != nil {
            t.Fatal(err)
        }
        DB.LogMode(true)

        mockedRow := sqlmock.NewRows([]string{"id", "created_at", "updated_at", "poolid"}).AddRow(1, time.Now(), time.Now(), "1")

        // Mock the complete transaction
        mock.ExpectQuery(`SELECT * FROM "storage_pools"  WHERE "storage_pools"."deleted_at" IS NULL AND ((poolid = ?)) ORDER BY "storage_pools"."id" ASC LIMIT 1`).
            WithArgs(c.givenPool.PoolId).
            WillReturnRows(mockedRow)

        mock.ExpectQuery(`SELECT * FROM "storage_pools" WHERE "storage_pools"."deleted_at" IS NULL AND "storage_pools"."id" = ? AND ((poolid = ?)) ORDER BY "storage_pools"."id" ASC`).
            WithArgs(1, c.givenPool.PoolId).
            WillReturnRows(mockedRow)

Answer 1

尝试这个:

mock.ExpectQuery(regexp.QuoteMeta(`SELECT * FROM "storage_pools" WHERE "storage_pools"."deleted_at" IS NULL AND ((poolid = ?)) ORDER BY "storage_pools"."id" ASC LIMIT 1`))

将您的查询放入此函数 regexp.QuoteMeta() 中。