Fix #167 query/deletebulk -m 0 throws exception

src/main/java/org/rundeck/client/api/model/Paging.java

@@ -63,7 +63,7 @@ public void setOffset(int offset) {
     @Override
     public String toString() {
         return String.format(
-                "Page [%d/%d] results %d - %d (of %d by %d).",
+                "Page [%d/%d] results %d - %d (of %d by %d)",
                 pagenum(),
                 maxPagenum(),
                 offset + 1,
@@ -93,13 +93,18 @@ public String moreResults(final String offsetArg, final String extra) {
     }
 
     public int pagenum() {
+        if (max < 1) {
+            return 1;
+        }
 
         int oflow = offset % max;
         return 1 + (offset - oflow) / max + (oflow > 0 ? 1 : 0);
     }
 
     public int maxPagenum() {
-
+        if (max < 1) {
+            return 1;
+        }
         int oflow = total % max;
         return (total - oflow) / max + (oflow > 0 ? 1 : 0);
 

src/test/groovy/org/rundeck/client/api/model/PagingSpec.groovy

@@ -0,0 +1,15 @@
+package org.rundeck.client.api.model
+
+import spock.lang.Specification
+
+class PagingSpec extends Specification {
+    def "tostring"() {
+        expect:
+        expect == new Paging(max: max, total: total, count: count, offset: offset).toString()
+        where:
+        max | total | count | offset | expect
+        20  | 0     | 0     | 0      | 'Page [1/0] results 1 - 0 (of 0 by 20)'
+        20  | 1     | 1     | 0      | 'Page [1/1] results 1 - 1 (of 1 by 20)'
+        0   | 1     | 1     | 0      | 'Page [1/1] results 1 - 1 (of 1 by 0)'
+    }
+}