tests: s/GITEA_UNIT_TESTS_VERBOSE/GITEA_UNIT_TESTS_LOG_SQL/

The GITEA_UNIT_TESTS_VERBOSE variable is an undocumented variable
introduced in 2017 (see 1028ef2)
whose sole purpose has been to log SQL statements when running unit
tests. It is renamed for clarity.

The documentation is updated to reflect this change.

Signed-off-by: singuliere <[email protected]>

Author: singuliere

docs/content/doc/developers/hacking-on-gitea.en-us.md

@@ -277,7 +277,7 @@ There are two types of test run by Gitea: Unit tests and Integration Tests.
 ### Unit Tests
 
 Unit tests are covered by `*_test.go` in `go test` system.
-You can set environment variable `GITEA_UNIT_TESTS_VERBOSE=1` to see detail logs during the test.
+You can set the environment variable `GITEA_UNIT_TESTS_LOG_SQL=1` to display all SQL statements when running the tests in verbose mode (i.e. when `GOTESTFLAGS=-v` is set).
 
 ```bash
 TAGS="bindata sqlite sqlite_unlock_notify" make test # Runs the unit tests

models/unittest/testdb.go

@@ -14,6 +14,7 @@ import (
 
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/storage"
 	"code.gitea.io/gitea/modules/util"
@@ -152,7 +153,7 @@ func CreateTestEngine(opts FixturesOptions) error {
 	if err = db.SyncAllTables(); err != nil {
 		return err
 	}
-	switch os.Getenv("GITEA_UNIT_TESTS_VERBOSE") {
+	switch os.Getenv("GITEA_UNIT_TESTS_LOG_SQL") {
 	case "true", "1":
 		x.ShowSQL(true)
 	}