[WIP] Add HashTableTests

Author: Kyle-Ye

Tests/OpenAttributeGraphCxxTests/Util/HashTableTests.swift

@@ -0,0 +1,83 @@
+//
+//  HashTableTests.swift
+//  OpenAttributeGraphCxxTests
+
+import OpenAttributeGraphCxx_Private.Util
+import Testing
+
+struct HashTableTests {
+    @Test
+    func untypedTableBasicOperations() {
+        let table = util.UntypedTable.create()
+        defer { util.UntypedTable.destroy(table) }
+        
+        // Test empty table
+        #expect(table.empty())
+        #expect(table.count() == 0)
+        
+        // Test insert operations
+        var key1 = "key1"
+        var value1 = "value1"
+        
+        let inserted = key1.withUnsafeBytes { keyPtr in
+            value1.withUnsafeBytes { valuePtr in
+                table.insert(keyPtr.baseAddress, valuePtr.baseAddress)
+            }
+        }
+        #expect(inserted)
+        #expect(!table.empty())
+        #expect(table.count() == 1)
+    }
+    
+    @Test
+    func untypedTableMultipleEntries() {
+        let table = util.UntypedTable.create()
+        defer { util.UntypedTable.destroy(table) }
+        
+        // Insert multiple key-value pairs
+        var keys: [String] = []
+        var values: [String] = []
+        
+        for i in 0..<5 {
+            keys.append("key\(i)")
+            values.append("value\(i)")
+        }
+        
+        for i in 0..<5 {
+            let key = withUnsafePointer(to: keys[i]) { $0 }
+            let value = withUnsafePointer(to: values[i]) { $0 }
+            #expect(table.insert(key, value))
+        }
+        
+        #expect(table.count() == 5)
+    }
+    
+    @Test
+    func untypedTableRemoval() {
+        let table = util.UntypedTable.create()
+        defer { util.UntypedTable.destroy(table) }
+        
+        // Insert entries
+        let key1 = withUnsafePointer(to: "key1") { $0 }
+        let value1 = withUnsafePointer(to: "value1") { $0 }
+        let key2 = withUnsafePointer(to: "key2") { $0 }
+        let value2 = withUnsafePointer(to: "value2") { $0 }
+        
+        #expect(table.insert(key1, value1))
+        #expect(table.insert(key2, value2))
+        #expect(table.count() == 2)
+        
+        // Remove one entry
+        #expect(table.remove(key1))
+        #expect(table.count() == 1)
+        
+        // Try to remove non-existent key
+        #expect(!table.remove(key1))
+        #expect(table.count() == 1)
+        
+        // Remove remaining entry
+        #expect(table.remove(key2))
+        #expect(table.count() == 0)
+        #expect(table.empty())
+    }
+}