Added a nice toString to IntegerArgumentType

src/test/java/net/minecraft/commands/arguments/IntegerArgumentTypeTest.java

@@ -10,6 +10,7 @@ import org.junit.Before;
 import org.junit.Test;
 
 import static net.minecraft.commands.arguments.IntegerArgumentType.integer;
+import static org.hamcrest.Matchers.hasToString;
 import static org.hamcrest.Matchers.is;
 import static org.junit.Assert.assertThat;
 
@@ -76,4 +77,12 @@ public class IntegerArgumentTypeTest {
             .addEqualityGroup(integer(-50, 100), integer(-50, 100))
             .testEquals();
     }
+
+    @Test
+    public void testToString() throws Exception {
+        assertThat(integer(), hasToString("integer()"));
+        assertThat(integer(-100), hasToString("integer(-100)"));
+        assertThat(integer(-100, 100), hasToString("integer(-100, 100)"));
+        assertThat(integer(Integer.MIN_VALUE, 100), hasToString("integer(-2147483648, 100)"));
+    }
 }