o Trying out a custom UUID type for prettier formatting.

1 files changed, 67 insertions, 0 deletions

diff --git a/src/test/java/io/trygvis/esper/testing/UuidTest.java b/src/test/java/io/trygvis/esper/testing/UuidTest.java
new file mode 100755
index 0000000..1efec73
--- /dev/null
+++ b/src/test/java/io/trygvis/esper/testing/UuidTest.java
@@ -0,0 +1,67 @@
+package io.trygvis.esper.testing;
+
+import org.apache.commons.lang.*;
+import org.junit.*;
+
+import java.util.*;
+
+import static java.lang.String.format;
+import static org.junit.Assert.*;
+
+public class UuidTest {
+
+    @Test
+    public void testToString() {
+        String s = "fedcba98-7654-3210-fedc-ba9876543210";
+        Uuid uuid = Uuid.fromString(s);
+
+        String r = toBase64(0xfedcba9876543210L, 0xfedcba9876543210L);
+
+        assertEquals(s, uuid.toUuidString());
+//        assertEquals(uuid.toUuidString(), Uuid.fromString(uuid.toUuidString()).toUuidString());
+//        assertEquals(uuid.toStringBase64(), Uuid.fromString(uuid.toStringBase64()).toStringBase64());
+
+        assertEquals(r, uuid.toStringBase64());
+    }
+
+    @Test
+    public void test2() {
+        Uuid uuid = Uuid.fromString("fedcba98-7654-3210-fedc-ba9876543210");
+
+        assertEquals(uuid, Uuid.fromString(uuid.toUuidString()));
+
+        assertEquals(uuid.toUuidString(), Uuid.fromString(uuid.toStringBase64()).toUuidString());
+    }
+
+    @Test
+    public void random() {
+        Random random = new Random(0);
+
+        for(int i = 0; i < 100; i++) {
+            long most = random.nextLong();
+            long least = random.nextLong();
+            System.out.println(format("i=%2d, most=%08x, least=%08x", i, most, least));
+
+            UUID s = new UUID(most, least);
+            Uuid uuid = Uuid.fromString(s.toString());
+
+            assertEquals(s.toString(), uuid.toUuidString());
+            assertEquals(toBase64(most, least), uuid.toStringBase64());
+        }
+    }
+
+    private String toBase64(long most, long least) {
+        String x = StringUtils.leftPad(Long.toBinaryString(most), 64, '0') + StringUtils.leftPad(Long.toBinaryString(least), 64, '0');
+        System.out.println(x);
+
+        String r = "";
+        for (int i = 0; i < 22; i++) {
+            int end = Math.min((i + 1) * 6, x.length());
+            String y = x.substring(i * 6, end);
+            int number = Integer.parseInt(y, 2);
+            System.out.println(format("% 4d % 4d binary=%8s, dec=%2d %c", i, end, y, number, Uuid.alphabet[number]));
+            r += Uuid.alphabet[number];
+        }
+        return r;
+    }
+}