zeus
77 lines
3.0 KiB
Swift
77 lines
3.0 KiB
Swift
import XCTest
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import GRDB
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class ValueObservationReadonlyTests: GRDBTestCase {
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func testReadOnlyObservation() throws {
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try assertValueObservation(
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ValueObservation.trackingConstantRegion {
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try Int.fetchOne($0, sql: "SELECT COUNT(*) FROM t")!
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},
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records: [0, 1],
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setup: { db in
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try db.execute(sql: "CREATE TABLE t(id INTEGER PRIMARY KEY AUTOINCREMENT)")
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},
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recordedUpdates: { db in
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try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
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})
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}
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func testWriteObservationFailsByDefaultWithErrorHandling() throws {
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try assertValueObservation(
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ValueObservation.trackingConstantRegion { db -> Int in
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try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
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return 0
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},
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fails: { (error: DatabaseError, _: DatabaseWriter) in
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XCTAssertEqual(error.resultCode, .SQLITE_READONLY)
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XCTAssertEqual(error.message, "attempt to write a readonly database")
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XCTAssertEqual(error.sql!, "INSERT INTO t DEFAULT VALUES")
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XCTAssertEqual(error.description, "SQLite error 8: attempt to write a readonly database - while executing `INSERT INTO t DEFAULT VALUES`")
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},
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setup: { db in
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try db.execute(sql: "CREATE TABLE t(id INTEGER PRIMARY KEY AUTOINCREMENT)")
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})
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}
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func testWriteObservation() throws {
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var observation = ValueObservation.trackingConstantRegion { db -> Int in
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XCTAssert(db.isInsideTransaction, "expected a wrapping transaction")
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try db.execute(sql: "CREATE TEMPORARY TABLE temp AS SELECT * FROM t")
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let result = try Int.fetchOne(db, sql: "SELECT COUNT(*) FROM temp")!
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try db.execute(sql: "DROP TABLE temp")
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return result
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}
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observation.requiresWriteAccess = true
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try assertValueObservation(
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observation,
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records: [0, 1],
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setup: { db in
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try db.execute(sql: "CREATE TABLE t(id INTEGER PRIMARY KEY AUTOINCREMENT)")
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},
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recordedUpdates: { db in
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try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
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})
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}
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func testWriteObservationIsWrappedInSavepointWithErrorHandling() throws {
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struct TestError: Error { }
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var observation = ValueObservation.trackingConstantRegion { db in
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try db.execute(sql: "INSERT INTO t DEFAULT VALUES")
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throw TestError()
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}
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observation.requiresWriteAccess = true
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try assertValueObservation(
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observation,
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fails: { (_: TestError, writer: DatabaseWriter) in
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let count = try writer.read(Table("t").fetchCount)
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XCTAssertEqual(count, 0)
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},
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setup: { db in
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try db.execute(sql: "CREATE TABLE t(id INTEGER PRIMARY KEY AUTOINCREMENT)")
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})
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}
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}
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