test: add WindowsVersionTypeTest

- Test fromNtVersion for pre-Windows 10 versions (XP to 8.1)
- Test Windows 10/11 detection with various build numbers
- Test isWindows11() returns correct boolean
- Test getProductName() returns correct product names

Author: WhatDamon

src/test/java/org/damon233/performtrackermod/utils/platform/windows/WindowsVersionTypeTest.java

@@ -0,0 +1,95 @@
+/*
+ * Copyright 2026 Damon Lu and open-source contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.damon233.performtrackermod.utils.platform.windows;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class WindowsVersionTypeTest {
+
+    @ParameterizedTest
+    @CsvSource({
+        "5, 1, 0, WINDOWS_XP",
+        "5, 2, 0, WINDOWS_SERVER_2003",
+        "6, 0, 0, WINDOWS_VISTA",
+        "6, 1, 0, WINDOWS_7",
+        "6, 2, 0, WINDOWS_8",
+        "6, 3, 0, WINDOWS_8_1"
+    })
+    void fromNtVersion_preWindows10_returnsCorrectType(int major, int minor, int build, WindowsVersionType expected) {
+        assertEquals(expected, WindowsVersionType.fromNtVersion(major, minor, build));
+    }
+
+    @ParameterizedTest
+    @CsvSource({
+        "10, 0, 0, WINDOWS_10",
+        "10, 0, 10240, WINDOWS_10",
+        "10, 0, 14393, WINDOWS_10",
+        "10, 0, 19045, WINDOWS_10",
+        "10, 0, 21996, WINDOWS_11",
+        "10, 0, 22631, WINDOWS_11",
+        "10, 0, 26100, WINDOWS_11"
+    })
+    void fromNtVersion_windows10And11_detectsCorrectly(int major, int minor, int build, WindowsVersionType expected) {
+        assertEquals(expected, WindowsVersionType.fromNtVersion(major, minor, build));
+    }
+
+    @Test
+    void fromNtVersion_unknownVersion_returnsUnknown() {
+        assertEquals(WindowsVersionType.UNKNOWN, WindowsVersionType.fromNtVersion(4, 0, 0));
+        assertEquals(WindowsVersionType.UNKNOWN, WindowsVersionType.fromNtVersion(0, 0, 0));
+    }
+
+    @Test
+    void isWindows11_onlyWindows11_returnsTrue() {
+        assertTrue(WindowsVersionType.WINDOWS_11.isWindows11());
+    }
+
+    @ParameterizedTest
+    @CsvSource({
+        "WINDOWS_XP",
+        "WINDOWS_SERVER_2003",
+        "WINDOWS_VISTA",
+        "WINDOWS_7",
+        "WINDOWS_8",
+        "WINDOWS_8_1",
+        "WINDOWS_10",
+        "UNKNOWN"
+    })
+    void isWindows11_otherTypes_returnsFalse(WindowsVersionType type) {
+        assertFalse(type.isWindows11());
+    }
+
+    @ParameterizedTest
+    @CsvSource({
+        "WINDOWS_XP, Windows XP",
+        "WINDOWS_SERVER_2003, Windows Server 2003",
+        "WINDOWS_VISTA, Windows Vista",
+        "WINDOWS_7, Windows 7",
+        "WINDOWS_8, Windows 8",
+        "WINDOWS_8_1, Windows 8.1",
+        "WINDOWS_10, Windows 10",
+        "WINDOWS_11, Windows 11",
+        "UNKNOWN, Unknown"
+    })
+    void getProductName_returnsCorrectName(WindowsVersionType type, String expectedName) {
+        assertEquals(expectedName, type.getProductName());
+    }
+}