Adjust available checks

groue · Jan 24, 2020 · 09087bd · 09087bd
1 parent 538252a
commit 09087bd
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Showing 2 changed files with 36 additions and 2 deletions.
diff --git a/GRDB/QueryInterface/Schema/TableDefinition.swift b/GRDB/QueryInterface/Schema/TableDefinition.swift
@@ -687,7 +687,21 @@ public final class TableAlteration {
         return column
     }
 
-    #if !os(OSX) || GRDBCUSTOMSQLITE || GRDBCIPHER
+    #if GRDBCUSTOMSQLITE
+    /// Renames a column in a table.
+    ///
+    ///     try db.alter(table: "player") { t in
+    ///         t.rename(column: "url", to: "home_url")
+    ///     }
+    ///
+    /// See https://www.sqlite.org/lang_altertable.html
+    ///
+    /// - parameter name: the column name to rename.
+    /// - parameter newName: the new name of the column.
+    public func rename(column name: String, to newName: String) {
+        alterations.append(.rename(old: name, new: newName))
+    }
+    #elseif !os(OSX)
     /// Renames a column in a table.
     ///
     ///     try db.alter(table: "player") { t in

diff --git a/Tests/GRDBTests/TableDefinitionTests.swift b/Tests/GRDBTests/TableDefinitionTests.swift
@@ -496,7 +496,27 @@ class TableDefinitionTests: GRDBTestCase {
         }
     }
 
-    #if !os(OSX) || GRDBCUSTOMSQLITE || GRDBCIPHER
+    #if GRDBCUSTOMSQLITE
+    func testAlterTableRenameColumn() throws {
+        let dbQueue = try makeDatabaseQueue()
+        try dbQueue.inDatabase { db in
+            try db.create(table: "test") { t in
+                t.column("a", .text)
+            }
+
+            sqlQueries.removeAll()
+            try db.alter(table: "test") { t in
+                t.rename(column: "a", to: "b")
+                t.add(column: "c")
+                t.rename(column: "c", to: "d")
+            }
+
+            assertEqualSQL(sqlQueries[sqlQueries.count - 3], "ALTER TABLE \"test\" RENAME COLUMN \"a\" TO \"b\"")
+            assertEqualSQL(sqlQueries[sqlQueries.count - 2], "ALTER TABLE \"test\" ADD COLUMN \"c\"")
+            assertEqualSQL(sqlQueries[sqlQueries.count - 1], "ALTER TABLE \"test\" RENAME COLUMN \"c\" TO \"d\"")
+        }
+    }
+    #elseif !os(OSX)
     @available(iOS 13.0, tvOS 13.0, watchOS 6.0, *)
     func testAlterTableRenameColumn() throws {
         let dbQueue = try makeDatabaseQueue()