add

2025-01-22 16:22:33 +08:00
parent 09b9cec8ec
commit 738c373a77
2534 changed files with 0 additions and 486292 deletions
@@ -1,78 +0,0 @@
-import XCTest
-import GRDB
-
-class DatabasePoolReadOnlyTests: GRDBTestCase {
-    
-    func testOpenReadOnlyMissingDatabase() throws {
-        dbConfiguration.readonly = true
-        do {
-            _ = try makeDatabasePool()
-        } catch let error as DatabaseError {
-            XCTAssertEqual(error.resultCode, .SQLITE_CANTOPEN)
-        }
-    }
-    
-    func testConcurrentRead() throws {
-        let databaseFileName = "db.sqlite"
-        
-        // Create a non-WAL database:
-        do {
-            let dbQueue = try makeDatabaseQueue(filename: databaseFileName)
-            try dbQueue.inDatabase { db in
-                try db.execute(sql: "CREATE TABLE items (id INTEGER PRIMARY KEY)")
-                for _ in 0..<3 {
-                    try db.execute(sql: "INSERT INTO items (id) VALUES (NULL)")
-                }
-            }
-        }
-        
-        // Open a read-only pool on that database:
-        dbConfiguration.readonly = true
-        let dbPool = try makeDatabasePool(filename: databaseFileName)
-        
-        // Make sure the database is not in WAL mode
-        let mode = try dbPool.read { db in
-            try String.fetchOne(db, sql: "PRAGMA journal_mode")!
-        }
-        XCTAssertNotEqual(mode.lowercased(), "wal")
-        
-        // Block 1                  Block 2
-        // SELECT * FROM items      SELECT * FROM items
-        // step                     step
-        // >
-        let s1 = DispatchSemaphore(value: 0)
-        //                          step
-        //                          <
-        let s2 = DispatchSemaphore(value: 0)
-        // step                     step
-        // step                     end
-        // end
-        
-        let block1 = { () in
-            try! dbPool.read { db in
-                let cursor = try Row.fetchCursor(db, sql: "SELECT * FROM items")
-                XCTAssertTrue(try cursor.next() != nil)
-                s1.signal()
-                _ = s2.wait(timeout: .distantFuture)
-                XCTAssertTrue(try cursor.next() != nil)
-                XCTAssertTrue(try cursor.next() != nil)
-                XCTAssertTrue(try cursor.next() == nil)
-            }
-        }
-        let block2 = { () in
-            try! dbPool.read { db in
-                let cursor = try Row.fetchCursor(db, sql: "SELECT * FROM items")
-                XCTAssertTrue(try cursor.next() != nil)
-                _ = s1.wait(timeout: .distantFuture)
-                XCTAssertTrue(try cursor.next() != nil)
-                s2.signal()
-                XCTAssertTrue(try cursor.next() != nil)
-                XCTAssertTrue(try cursor.next() == nil)
-            }
-        }
-        let blocks = [block1, block2]
-        DispatchQueue.concurrentPerform(iterations: blocks.count) { index in
-            blocks[index]()
-        }
-    }
-}