+ Format.appendPercentage(sb, 123.436f, 4);
+ assertEquals(sb.toString(), "123.4360");
+ }
+
+ @Test(groups = "Functional")
+ public void testForm_float()
+ {
+ Format f = new Format("%3.2f");
+ assertEquals(f.form(123f), "123.00");
+ assertEquals(f.form(123.1f), "123.10");
+ assertEquals(f.form(123.12f), "123.12");
+ assertEquals(f.form(123.124f), "123.12");
+ assertEquals(f.form(123.125f), "123.13");
+ assertEquals(f.form(123.126f), "123.13");
+
+ f = new Format("%3.0f");
+ assertEquals(f.form(123f), "123.");
+ assertEquals(f.form(12f), "12.");
+ assertEquals(f.form(123.4f), "123.");
+ assertEquals(f.form(123.5f), "124.");
+ assertEquals(f.form(123.6f), "124.");
+ assertEquals(f.form(129.6f), "130.");
+ }
+
+ @Test(groups = "Functional")
+ public void testRepeat()
+ {
+ assertEquals(Format.repeat('a', 3), "aaa");
+ assertEquals(Format.repeat('b', 0), "");
+ assertEquals(Format.repeat('c', -1), "");
+ }
+
+ @Test(groups = "Functional")
+ public void testFormat_scientific()
+ {
+ Format f = new Format("%3.4e");
+ double d = 1d;
+ assertEquals(f.form(d), "1.0000e+000");
+ assertEquals(String.format("%3.4e", d), "1.0000e+00");
+
+ d = 12345678.12345678d;
+ assertEquals(f.form(d), "1.2346e+007");
+ assertEquals(String.format("%3.4e", d), "1.2346e+07");
+ }
+
+ /**
+ * Test that fails (in 2.10.1) with timeout as there is an infinite loop in
+ * Format.exp_format()
+ */
+ @Test(groups = "Functional", timeOut = 500)
+ public void testFormat_scientific_overflow()
+ {
+ Format f = new Format("%3.4e");
+ double d = 1.12E-310;
+ /*
+ * problem: exp_format() scales up 'd' to the range 1-10
+ * while computing a scaling factor, but this factor acquires
+ * the value Double.POSITIVE_INFINITY instead of 1.0E+309
+ * the value to be formatted is multipled by factor and becomes Infinity
+ * resulting in an infinite loop in the recursive call to exp_format()
+ */
+ assertEquals(f.form(d), "1.1200e-310");
+ }
+
+ /**
+ * This test shows that Format.form() is faster for this case than
+ * String.format()
+ */
+ @Test(groups = "Timing")
+ public void testFormat_scientificTiming()
+ {
+ Format f = new Format("%3.4e");
+ double d = 12345678.12345678d;
+
+ int iterations = 1000;
+ long start = System.currentTimeMillis();
+ for (int i = 0; i < iterations; i++)
+ {
+ f.form(d);
+ }
+ long stop = System.currentTimeMillis();
+ long elapsed1 = stop - start;
+ System.out
+ .println(iterations + " x Format.form took " + elapsed1 + "ms");
+
+ start = System.currentTimeMillis();
+ for (int i = 0; i < iterations; i++)
+ {
+ String.format("%3.4e", d);
+ }
+ stop = System.currentTimeMillis();
+ long elapsed2 = stop - start;
+ System.out.println(
+ iterations + " x String.format took " + elapsed2 + "ms");
+ assertTrue(elapsed2 > elapsed1);