在 SystemInfo 中采集内存信息 (#3903)

HMCLCore/src/test/java/org/jackhuang/hmcl/util/DataSizeUnitTest.java

@@ -0,0 +1,65 @@
+/*
+ * Hello Minecraft! Launcher
+ * Copyright (C) 2025 huangyuhui <huanghongxun2008@126.com> and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.jackhuang.hmcl.util;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public final class DataSizeUnitTest {
+
+    @Test
+    public void testToString() {
+        assertEquals("0 bytes", DataSizeUnit.format(0));
+        assertEquals("1 byte", DataSizeUnit.format(1));
+        assertEquals("2 bytes", DataSizeUnit.format(2));
+        assertEquals("100 bytes", DataSizeUnit.format(100));
+        assertEquals("1023 bytes", DataSizeUnit.format(1023));
+        assertEquals("1 KiB", DataSizeUnit.format(1024));
+        assertEquals("1 KiB", DataSizeUnit.format(1025));
+        assertEquals("1.07 KiB", DataSizeUnit.format(1100));
+        assertEquals("4 KiB", DataSizeUnit.format(4096));
+        assertEquals("1 MiB", DataSizeUnit.format(1024 * 1024));
+        assertEquals("1.5 MiB", DataSizeUnit.format((long) (1.5 * 1024 * 1024)));
+        assertEquals("1 GiB", DataSizeUnit.format(1024 * 1024 * 1024));
+        assertEquals("1.5 GiB", DataSizeUnit.format((long) (1.5 * 1024 * 1024 * 1024)));
+        assertEquals("1 TiB", DataSizeUnit.format(1024L * 1024 * 1024 * 1024));
+        assertEquals("1.5 TiB", DataSizeUnit.format((long) (1.5 * 1024 * 1024 * 1024 * 1024)));
+    }
+
+    @Test
+    public void testConvertFromBytes() {
+        assertEquals(1, DataSizeUnit.KILOBYTES.convertFromBytes(1024L));
+        assertEquals(1.5, DataSizeUnit.KILOBYTES.convertFromBytes((long) (1024. * 1.5)));
+
+        assertEquals(1, DataSizeUnit.MEGABYTES.convertFromBytes(1024L * 1024));
+        assertEquals(1.5, DataSizeUnit.MEGABYTES.convertFromBytes((long) (1024 * 1024 * 1.5)));
+    }
+
+    @Test
+    public void testConvertToBytes() {
+        assertEquals(10., DataSizeUnit.BYTES.convertToBytes(10));
+        assertEquals(10. * 1024, DataSizeUnit.KILOBYTES.convertToBytes(10));
+        assertEquals(10. * 1024 * 1024, DataSizeUnit.MEGABYTES.convertToBytes(10));
+        assertEquals(10. * 1024 * 1024 * 1024, DataSizeUnit.GIGABYTES.convertToBytes(10));
+        assertEquals(10. * 1024 * 1024 * 1024 * 1024, DataSizeUnit.TERABYTES.convertToBytes(10));
+    }
+
+    private DataSizeUnitTest() {
+    }
+}