test: run integration tests on random ports and speed up slow tests (#39842)

Integration test processes now get their own work directory, config file
and random ports, so several runs can execute in parallel on one
machine. The slowest tests also lose fixed sleeps and needlessly
expensive setup, with their assertions kept.

- Batch PostgreSQL sequence resets, the main per-test fixture cost there
- Cheap hashing params in hash and OAuth2 fixture tests, full-cost
vectors stay
- Single fetch for negative Actions runner assertions instead of 1s
polls
- Queue flushes and backdated timestamps instead of sleeps
- In-memory SQLite test journal, tmpfs for PostgreSQL in CI
- E2E instance writes SSH keys into its work directory instead of
`~/.ssh/authorized_keys`

models/fixtures/oauth2_application.yml

@@ -3,7 +3,7 @@
   uid: 1
   name: "Test"
   client_id: "da7da3ba-9a13-4167-856f-3899de0b0138"
-  client_secret: "$2a$10$UYRgUSgekzBp6hYe8pAdc.cgB4Gn06QRKsORUnIYTYQADs.YR/uvi" # bcrypt of "4MK8Na6R55smdCY0WuCCumZ6hjRPnGY5saWVRHHjJiA=
+  client_secret: "$2a$04$fk.C0LyaUcmxOFLcfcXUDO084yIA9o0nRwkSHSZb/tvZkCzLZjRea" # bcrypt of "4MK8Na6R55smdCY0WuCCumZ6hjRPnGY5saWVRHHjJiA=
   redirect_uris: '["https://example.com"]'
   created_unix: 1546869730
   updated_unix: 1546869730
@@ -13,7 +13,7 @@
   uid: 2
   name: "Test native app"
   client_id: "ce5a1322-42a7-11ed-b878-0242ac120002"
-  client_secret: "$2a$10$UYRgUSgekzBp6hYe8pAdc.cgB4Gn06QRKsORUnIYTYQADs.YR/uvi" # bcrypt of "4MK8Na6R55smdCY0WuCCumZ6hjRPnGY5saWVRHHjJiA=
+  client_secret: "$2a$04$VvPoNpflYJB94T8seLcZnOCTtQtB3Q2wXw7ZgrWIi2Oix3VWL8s7i" # bcrypt of "4MK8Na6R55smdCY0WuCCumZ6hjRPnGY5saWVRHHjJiA=
   redirect_uris: '["http://127.0.0.1"]'
   created_unix: 1546869730
   updated_unix: 1546869730

models/unittest/fixtures.go

@@ -51,12 +51,15 @@ func loadFixtureResetSeqPgsql(e *xorm.Engine) error {
 	if err != nil {
 		return fmt.Errorf("failed to generate sequence update: %w", err)
 	}
-	for _, r := range results {
-		for _, value := range r {
-			_, err = e.Exec(value)
-			if err != nil {
-				return fmt.Errorf("failed to update sequence: %s, error: %w", value, err)
-			}
+	var statements []string
+	for _, result := range results {
+		for _, statement := range result {
+			statements = append(statements, statement)
+		}
+	}
+	if len(statements) > 0 {
+		if _, err := e.Exec(strings.Join(statements, "\n")); err != nil {
+			return fmt.Errorf("loadFixtureResetSeqPgsql: %w", err)
 		}
 	}
 	return nil

models/unittest/testdb.go

@@ -206,7 +206,7 @@ type FixturesOptions struct {
 
 // CreateTestEngine creates a test database and loads the fixture data from fixturesDir
 func CreateTestEngine(testSQLiteFile string, opts FixturesOptions) error {
-	driver, connStr, err := db.ConnStr(db.ConnOptions{Type: setting.DatabaseTypeSQLite3, SQLitePath: testSQLiteFile, SQLiteBusyTimeout: setting.DefaultSQLiteBusyTimeout})
+	driver, connStr, err := db.ConnStr(db.ConnOptions{Type: setting.DatabaseTypeSQLite3, SQLitePath: testSQLiteFile, SQLiteBusyTimeout: setting.DefaultSQLiteBusyTimeout, SQLiteJournalMode: "MEMORY"})
 	if err != nil {
 		return err
 	}