Add more tests of ValueArray.convertPrecision()

h2/src/test/org/h2/test/TestBase.java

@@ -849,6 +849,19 @@ public abstract class TestBase {
         assertFalse(message, rs1.next());
     }
 
+    /**
+     * Check if two objects are the same, and if not throw an exception.
+     *
+     * @param expected the expected value
+     * @param actual the actual value
+     * @throws AssertionError if the objects are not the same
+     */
+    public void assertSame(Object expected, Object actual) {
+        if (expected != actual) {
+            fail(" expected: " + expected + " != actual: " + actual);
+        }
+    }
+
     /**
      * Check if the first value is larger or equal than the second value, and if
      * not throw an exception.

h2/src/test/org/h2/test/unit/TestValue.java

@@ -61,6 +61,7 @@ public class TestValue extends TestBase {
         testCastTrim();
         testValueResultSet();
         testDataType();
+        testArray();
         testUUID();
         testDouble(false);
         testDouble(true);
@@ -330,6 +331,21 @@ public class TestValue extends TestBase {
         assertEquals(123123123, ts.getNanos());
     }
 
+    private void testArray() {
+        ValueArray src = ValueArray.get(
+                new Value[] {ValueString.get("1"), ValueString.get("22"), ValueString.get("333")});
+        assertEquals(6, src.getPrecision());
+        assertSame(src, src.convertPrecision(5, false));
+        assertEquals(src, src.convertPrecision(6, true));
+        ValueArray exp = ValueArray.get(
+                new Value[] {ValueString.get("1"), ValueString.get("22"), ValueString.get("33")});
+        assertEquals(exp, src.convertPrecision(5, true));
+        exp = ValueArray.get(new Value[] {ValueString.get("1"), ValueString.get("22")});
+        assertEquals(exp, src.convertPrecision(3, true));
+        exp = ValueArray.get(new Value[0]);
+        assertEquals(exp, src.convertPrecision(0, true));
+    }
+
     private void testUUID() {
         long maxHigh = 0, maxLow = 0, minHigh = -1L, minLow = -1L;
         for (int i = 0; i < 100; i++) {