Fixed FileProject.delete() bug. Preparing for libpit 1.1.6

libpit/test/com/jdbernard/pit/FileProjectTest.groovy

@@ -121,6 +121,8 @@ class FileProjectTest {
 
         assertEquals rootProj.name, 'renamedTestDir'
         assertTrue new File('renamedTestDir').exists()
+
+        assert rootProj.source.deleteDir()
     }
 
     @Test void testCreateNewIssue() {

libpit/test/com/jdbernard/pit/FilterTest.groovy

@@ -15,16 +15,16 @@ class FilterTest {
 
         proj = new MockProject('proj1')
 
-        def issue = new Issue( '0000', Category.TASK, 5)
+        def issue = new MockIssue( '0000', Category.TASK, 5)
         proj.issues['0000'] = issue
 
-        issue = new Issue('0001', Category.BUG, 3)
+        issue = new MockIssue('0001', Category.BUG, 3)
         proj.issues['0001'] = issue
 
-        issue = new Issue('0002', Category.CLOSED, 9)
+        issue = new MockIssue('0002', Category.CLOSED, 9)
         proj.issues['0002'] = issue
 
-        issue = new Issue('0003', Category.FEATURE, 0)
+        issue = new MockIssue('0003', Category.FEATURE, 0)
         proj.issues['0003'] = issue
 
         def subProj = new MockProject('subproj1')

libpit/test/com/jdbernard/pit/MockIssue.groovy

@@ -0,0 +1,6 @@
+package com.jdbernard.pit
+
+public class MockIssue extends Issue {
+    public MockIssue(String id, Category c, int p) { super (id, c, p) }
+    public boolean delete() { return true }
+}