--- /dev/null
+/*
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
+ *
+ * This file is part of Jalview.
+ *
+ * Jalview 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.
+ *
+ * Jalview 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 Jalview. If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
+ */
+package jalview.bin;
+
+import static org.testng.AssertJUnit.assertEquals;
+import static org.testng.AssertJUnit.assertTrue;
+
+import org.testng.annotations.Test;
+
+public class MemorySettingTest
+{
+
+ @Test(groups = "Functional")
+ public void testGetMemorySetting()
+ {
+ long KB = 1024;
+ long MB = KB * KB;
+ long GB = MB * KB;
+ // long TB = GB * KB;
+
+ /* some of these tests assume a host machine with RAM somewhere between 1GB and 1TB */
+
+ // should return 100% of physical memory available (or 1TB whichever is smaller)
+ long mem1 = MemorySetting.getMemorySetting("1T", "100");
+ long fullmem = mem1 + 512 * MB; // mem1 gets 512MB removed for the OS
+ long mem1b = MemorySetting.getMemorySetting("1t", "100");
+ assertTrue(mem1 > 1 * GB);
+ assertEquals(mem1, mem1b);
+
+ // test 10% memory. Note 512MB is set as minimum, so adjust to 50% if less than
+ // 5GB RAM.
+ String pc;
+ Float pcf;
+ if (mem1 > 5 * GB)
+ {
+ pc = "10";
+ pcf = 0.1f;
+ }
+ else
+ {
+ pc = "50";
+ pcf = 0.5f;
+ }
+ long mem1c = MemorySetting.getMemorySetting("1T", pc);
+ assertTrue(mem1c > (pcf - 0.01) * fullmem && mem1c < (pcf + 0.01) * fullmem); // allowing for floating point errors
+
+ // should return 1GB (assuming host machine has more than 1GB RAM)
+ long mem2 = MemorySetting.getMemorySetting("1G", "100");
+ long mem2b = MemorySetting.getMemorySetting("1g", "100");
+ assertEquals(mem2, 1 * GB);
+ assertEquals(mem2, mem2b);
+
+ long mem3 = MemorySetting.getMemorySetting("1024M", "100");
+ long mem3b = MemorySetting.getMemorySetting("1024m", "100");
+ assertEquals(mem3, 1024 * MB);
+ assertEquals(mem3, mem3b);
+
+ long mem4 = MemorySetting.getMemorySetting("1048576K", "100");
+ long mem4b = MemorySetting.getMemorySetting("1048576k", "100");
+ assertEquals(mem4, 1048576 * KB);
+ assertEquals(mem4, mem4b);
+
+ long mem5 = MemorySetting.getMemorySetting("1073741824B", "100");
+ long mem5b = MemorySetting.getMemorySetting("1073741824b", "100");
+ long mem5c = MemorySetting.getMemorySetting("1073741824", "100");
+ assertEquals(mem5, 1073741824L);
+ assertEquals(mem5, mem5b);
+ assertEquals(mem5, mem5c);
+
+ // check g, m, k, b, "" acting as they should
+ assertEquals(mem2, mem3);
+ assertEquals(mem2, mem4);
+ assertEquals(mem2, mem5);
+
+ // default should not be more than 90% memory or 32GB
+ long mem6 = MemorySetting.getMemorySetting();
+ assertTrue(mem6 <= (long) (0.905 * fullmem));
+ assertTrue(mem6 <= 32 * GB);
+
+ // ensure enough memory for application
+ long mem7 = MemorySetting.getMemorySetting("1B", "0.000000001");
+ assertEquals(mem7, 512 * MB);
+
+ // ensure enough memory for OS
+ long mem8 = MemorySetting.getMemorySetting("2TB", "100"); // this should be short of 512MB
+ long mem8b = MemorySetting.getMemorySetting("2TB", "50");
+ assertEquals(mem8b * 2 - mem8, 512 * MB);
+ }
+
+}