Why Is sqlmock Failing to Match My Query Despite Identical Text?

sqlmock Not Matching Query, Despite Identical Text

Encountering the error message:

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"

while using sqlmock with Gorm can be frustrating. Despite the log output showing identical queries, the matching is failing.

The underlying issue here is the difference between SQL text and SQL syntax. While the query text may appear identical, small syntactical variations can cause issues. To resolve this, ensure that the expected query string in your mock matches the literal text of the query being executed.

One possible solution is to use the regexp.QuoteMeta() function to escape any metacharacters in the expected query:

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`))

By enclosing the query text in literal quotes, regexp.QuoteMeta() ensures that any special characters or metacharacters within the string are treated literally, preventing them from interfering with the matching process. This should resolve the issue and allow sqlmock to correctly match the query.

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