add swiftUI code

2025-01-22 14:09:10 +08:00
parent 68e7b7347c
commit 8a99853829
2531 changed files with 486215 additions and 0 deletions
@@ -0,0 +1,50 @@
+import XCTest
+import GRDB
+
+class ValueObservationCountTests: GRDBTestCase {
+    func testCount() throws {
+        struct T: TableRecord { }
+        
+        try assertValueObservation(
+            ValueObservation.trackingConstantRegion(T.fetchCount),
+            records: [0, 1, 1, 2, 3, 4],
+            setup: { db in
+                try db.execute(sql: "CREATE TABLE t(id INTEGER PRIMARY KEY AUTOINCREMENT)")
+        },
+            recordedUpdates: { db in
+                try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
+                try db.execute(sql: "UPDATE t SET id = id")
+                try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
+                try db.inTransaction {
+                    try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
+                    try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
+                    try db.execute(sql: "DELETE FROM t WHERE id = 1")
+                    return .commit
+                }
+                try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
+        })
+    }
+    
+    func testCountWithRemoveDuplicates() throws {
+        struct T: TableRecord { }
+        
+        try assertValueObservation(
+            ValueObservation.trackingConstantRegion(T.fetchCount).removeDuplicates(),
+            records: [0, 1, 2, 3, 4],
+            setup: { db in
+                try db.execute(sql: "CREATE TABLE t(id INTEGER PRIMARY KEY AUTOINCREMENT)")
+        },
+            recordedUpdates: { db in
+                try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
+                try db.execute(sql: "UPDATE t SET id = id")
+                try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
+                try db.inTransaction {
+                    try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
+                    try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
+                    try db.execute(sql: "DELETE FROM t WHERE id = 1")
+                    return .commit
+                }
+                try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
+        })
+    }
+}