1.7 adds assertWithinPercent

pom.xml

@@ -6,7 +6,7 @@
   <groupId>junit</groupId>
   <artifactId>junit-more</artifactId>
   <packaging>jar</packaging>
-  <version>1.6</version>
+  <version>1.7</version>
 
   <name>JUnitMore</name>
   <url>https://github.com/pamcevoy/junit-more</url>

src/main/java/ext/junit/more/NumberAssert.java

@@ -43,4 +43,63 @@ public static void assertBetween(long expectedMin, long actual, long expectedMax
         assertGreaterThan(expectedMin, actual);
         assertLessThan(expectedMax, actual);
     }
+
+    /**
+     * Assert that the actual value is within the given percent of the expected value.
+     * @param expected the expected value
+     * @param percent the percent above and below expected
+     * @param actual the actual value
+     */
+    public static void assertWithinPercent(long expected, double percent, long actual) {
+        double pct = Math.max(0.0, Math.min(Math.abs(percent), 1.0));
+        long expectedMin = (long)(expected * (1.0 - pct));
+        long expectedMax = (long)(expected * (1.0 + pct));
+        assertBetween(expectedMin, actual, expectedMax);
+    }
+
+    /**
+     * Assert that the actual value is greater than the expected minimum.
+     * @param expectedMin the expected minimum
+     * @param actual the actual value
+     */
+    public static void assertGreaterThan(double expectedMin, double actual) {
+        if (actual < expectedMin) {
+            Assert.fail("Actual '" + actual + "' less than expected minimum '" + expectedMin + "'.");
+        }
+    }
+
+    /**
+     * Assert that the actual value is less than the expected maximum.
+     * @param expectedMax the expected minimum
+     * @param actual the actual value
+     */
+    public static void assertLessThan(double expectedMax, double actual) {
+        if (actual > expectedMax) {
+            Assert.fail("Actual '" + actual + "' greater than expected maximum '" + expectedMax + "'.");
+        }
+    }
+
+    /**
+     * Assert that the value is between these two values (inclusive).
+     * @param expectedMin the expected min
+     * @param actual the actual value
+     * @param expectedMax the expected max
+     */
+    public static void assertBetween(double expectedMin, double actual, double expectedMax) {
+        assertGreaterThan(expectedMin, actual);
+        assertLessThan(expectedMax, actual);
+    }
+
+    /**
+     * Assert that the actual value is within the given percent of the expected value.
+     * @param expected the expected value
+     * @param percent the percent above and below expected
+     * @param actual the actual value
+     */
+    public static void assertWithinPercent(double expected, double percent, double actual) {
+        double pct = Math.max(0.0, Math.min(Math.abs(percent), 1.0));
+        double expectedMin = (expected * (1.0 - pct));
+        double expectedMax = (expected * (1.0 + pct));
+        assertBetween(expectedMin, actual, expectedMax);
+    }
 }