From dc2bac1b5e1145075f32f0a46b7a57f46efc5451 Mon Sep 17 00:00:00 2001
From: Paul Beckingham <paul@beckingham.net>
Date: Sun, 28 Jun 2009 17:07:25 -0400
Subject: [PATCH] Unit Tests

- All unit tests most now clean up a residual undo.data file, so the
  number of tests increased, but with no benefit.
---
 src/TDB.h                    |  6 +++---
 src/Task.cpp                 | 18 ++++--------------
 src/main.h                   |  3 +++
 src/report.cpp               |  2 ++
 src/tests/abbreviation.t     |  5 ++++-
 src/tests/add.t              |  5 ++++-
 src/tests/annotate.t         |  5 ++++-
 src/tests/append.t           |  5 ++++-
 src/tests/args.t             |  5 ++++-
 src/tests/benchmark.t        |  5 ++++-
 src/tests/bug.annotate.t     |  5 ++++-
 src/tests/bug.annual.t       |  5 ++++-
 src/tests/bug.concat.t       |  5 ++++-
 src/tests/bug.hang.t         |  5 ++++-
 src/tests/bug.period.t       |  5 ++++-
 src/tests/bug.sort.t         |  5 ++++-
 src/tests/bug.summary.t      |  5 ++++-
 src/tests/cal.t              |  5 ++++-
 src/tests/color.active.t     |  5 ++++-
 src/tests/color.disable.t    |  5 ++++-
 src/tests/color.due.t        |  5 ++++-
 src/tests/color.keyword.t    |  5 ++++-
 src/tests/color.overdue.t    |  5 ++++-
 src/tests/color.pri.t        |  5 ++++-
 src/tests/color.project.t    |  5 ++++-
 src/tests/color.recurring.t  |  5 ++++-
 src/tests/color.tag.t        |  5 ++++-
 src/tests/color.tagged.t     |  5 ++++-
 src/tests/completed.t        |  5 ++++-
 src/tests/config.obsolete.t  |  5 ++++-
 src/tests/confirmation.t     |  5 ++++-
 src/tests/custom.columns.t   |  5 ++++-
 src/tests/custom.recur_ind.t |  5 ++++-
 src/tests/custom.t           |  5 ++++-
 src/tests/custom.tag_ind.t   |  5 ++++-
 src/tests/dateformat.t       |  5 ++++-
 src/tests/default.t          |  5 ++++-
 src/tests/delete.t           |  6 +++++-
 src/tests/due.t              |  5 ++++-
 src/tests/duplicate.t        |  5 ++++-
 src/tests/enpassant.t        |  5 ++++-
 src/tests/export.t           |  5 ++++-
 src/tests/filter.t           |  5 ++++-
 src/tests/import.143.t       |  5 ++++-
 src/tests/import.150.t       |  5 ++++-
 src/tests/import.160.t       |  5 ++++-
 src/tests/import.cmd.t       |  5 ++++-
 src/tests/import.csv.t       |  5 ++++-
 src/tests/import.todo.t      |  5 ++++-
 src/tests/import.txt.t       |  5 ++++-
 src/tests/label.t            |  5 ++++-
 src/tests/nag.t              |  5 ++++-
 src/tests/next.t             |  5 ++++-
 src/tests/oldest.t           |  5 ++++-
 src/tests/overdue.t          |  5 ++++-
 src/tests/recur.t            |  5 ++++-
 src/tests/recur.weekdays.t   |  5 ++++-
 src/tests/sequence.t         |  5 ++++-
 src/tests/shadow.t           |  5 ++++-
 src/tests/start.t            |  6 +++++-
 src/tests/subproject.t       |  5 ++++-
 src/tests/substitute.t       |  5 ++++-
 src/tests/tag.t              |  5 ++++-
 src/tests/tdb.t.cpp          |  2 ++
 src/tests/undo.t             |  6 +++++-
 src/tests/utf8.t             |  5 ++++-
 66 files changed, 261 insertions(+), 78 deletions(-)

diff --git a/src/TDB.h b/src/TDB.h
index f72defd15..b2e159d9a 100644
--- a/src/TDB.h
+++ b/src/TDB.h
@@ -30,9 +30,9 @@
 #include <map>
 #include <vector>
 #include <string>
-#include <Location.h>
-#include <Filter.h>
-#include <Task.h>
+#include "Location.h"
+#include "Filter.h"
+#include "Task.h"
 
 // Length of longest line.
 #define T_LINE_MAX 32768
diff --git a/src/Task.cpp b/src/Task.cpp
index 592ef4649..99de67d17 100644
--- a/src/Task.cpp
+++ b/src/Task.cpp
@@ -538,33 +538,23 @@ void Task::validate () const
     if (has ("until"))
     {
       Date until (::atoi (get ("until").c_str ()));
-      if (due >= until)
+      if (due > until)
         throw std::string ("An 'until' date must be after a 'due' date."); // TODO i18n
     }
 
     Date entry (::atoi (get ("entry").c_str ()));
 
-    if (entry >= due)
-      throw std::string ("An 'entry' date must be before a 'due' date."); // TODO i18n
-
-    if (has ("until"))
-    {
-      Date until (::atoi (get ("until").c_str ()));
-      if (entry >= until)
-        throw std::string ("An 'until' date must be after an 'entry' date."); // TODO i18n
-    }
-
     if (has ("start"))
     {
       Date start (::atoi (get ("start").c_str ()));
-      if (entry >= start)
+      if (entry > start)
         throw std::string ("A 'start' date must be after an 'entry' date."); // TODO i18n
     }
 
     if (has ("end"))
     {
       Date end (::atoi (get ("end").c_str ()));
-      if (entry >= end)
+      if (entry > end)
         throw std::string ("An 'end' date must be after an 'entry' date."); // TODO i18n
     }
   }
@@ -574,7 +564,7 @@ void Task::validate () const
   {
     Duration d;
     if (! d.valid (get ("recur")))
-      throw std::string ("An 'end' date must be after an 'entry' date."); // TODO i18n
+      throw std::string ("A recurrence value must be valid."); // TODO i18n
   }
 }
 
diff --git a/src/main.h b/src/main.h
index 3ae62b1c5..3f6a566fc 100644
--- a/src/main.h
+++ b/src/main.h
@@ -24,6 +24,8 @@
 //     USA
 //
 ////////////////////////////////////////////////////////////////////////////////
+#ifndef INCLUDED_MAIN
+#define INCLUDED_MAIN
 
 #define FEATURE_TDB_OPT 1   // TDB Optimization reduces file I/O.
 #define FEATURE_NEW_ID  1   // Echoes back new id.
@@ -154,4 +156,5 @@ template <class T> void listDiff (
   }
 }
 
+#endif
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/src/report.cpp b/src/report.cpp
index f332e9f52..624752a97 100644
--- a/src/report.cpp
+++ b/src/report.cpp
@@ -1617,9 +1617,11 @@ std::string handleReportStats ()
   if (!stat (file.c_str (), &s))
     dataSize += s.st_size;
 
+#ifdef FEADTURE_UNDO
   file = location + "/undo.data";
   if (!stat (file.c_str (), &s))
     dataSize += s.st_size;
+#endif
 
   // TODO Include transaction log?
 
diff --git a/src/tests/abbreviation.t b/src/tests/abbreviation.t
index 4f798c0ee..d32c0514a 100755
--- a/src/tests/abbreviation.t
+++ b/src/tests/abbreviation.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 22;
+use Test::More tests => 23;
 
 # Create the rc file.
 if (open my $fh, '>', 'abbrev.rc')
@@ -92,6 +92,9 @@ like ($output, qr/ABSOLUTELY NO WARRANTY/, 'v');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'abbrev.rc';
 ok (!-r 'abbrev.rc', 'Removed abbrev.rc');
 
diff --git a/src/tests/add.t b/src/tests/add.t
index 820b4d051..703a0249f 100755
--- a/src/tests/add.t
+++ b/src/tests/add.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 14;
+use Test::More tests => 15;
 
 # Create the rc file.
 if (open my $fh, '>', 'add.rc')
@@ -70,6 +70,9 @@ like ($output, qr/Status\s+Pending\n/, 'add Pending');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'add.rc';
 ok (!-r 'add.rc', 'Removed add.rc');
 
diff --git a/src/tests/annotate.t b/src/tests/annotate.t
index bd867f8d4..209dc5ec9 100755
--- a/src/tests/annotate.t
+++ b/src/tests/annotate.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 8;
+use Test::More tests => 9;
 
 # Create the rc file.
 if (open my $fh, '>', 'annotate.rc')
@@ -67,6 +67,9 @@ like ($output, qr/2 tasks/, 'count');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'annotate.rc';
 ok (!-r 'annotate.rc', 'Removed annotate.rc');
 
diff --git a/src/tests/append.t b/src/tests/append.t
index 54225dd86..2fa921bb0 100755
--- a/src/tests/append.t
+++ b/src/tests/append.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 4;
+use Test::More tests => 5;
 
 # Create the rc file.
 if (open my $fh, '>', 'append.rc')
@@ -48,6 +48,9 @@ like ($output, qr/Description\s+foo\sbar\n/, 'append worked');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'append.rc';
 ok (!-r 'append.rc', 'Removed append.rc');
 
diff --git a/src/tests/args.t b/src/tests/args.t
index 63ad3a1ff..e47acd6b0 100755
--- a/src/tests/args.t
+++ b/src/tests/args.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 8;
+use Test::More tests => 9;
 
 # Create the rc file.
 if (open my $fh, '>', 'args.rc')
@@ -64,6 +64,9 @@ like ($output, qr/Description\s+project:p\spri:H\s\+tag\sfoo\n/ms, 'task 1 -- pr
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'args.rc';
 ok (!-r 'args.rc', 'Removed args.rc');
 
diff --git a/src/tests/benchmark.t b/src/tests/benchmark.t
index 73088a4a0..303205deb 100755
--- a/src/tests/benchmark.t
+++ b/src/tests/benchmark.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 4;
+use Test::More tests => 5;
 
 # Create the rc file.
 if (open my $fh, '>', 'bench.rc')
@@ -96,6 +96,9 @@ ok (!-r 'pending.data', 'Removed pending.data');
 unlink 'completed.data';
 ok (!-r 'completed.data', 'Removed completed.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'bench.rc';
 ok (!-r 'bench.rc', 'Removed bench.rc');
 
diff --git a/src/tests/bug.annotate.t b/src/tests/bug.annotate.t
index f1b20b4aa..04b4ad272 100755
--- a/src/tests/bug.annotate.t
+++ b/src/tests/bug.annotate.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 4;
+use Test::More tests => 5;
 
 # Create the rc file.
 if (open my $fh, '>', 'bug_annotate.rc')
@@ -47,6 +47,9 @@ like ($output, qr/Cannot apply a blank annotation./, 'failed on blank annotation
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'bug_annotate.rc';
 ok (!-r 'bug_annotate.rc', 'Removed bug_annotate.rc');
 
diff --git a/src/tests/bug.annual.t b/src/tests/bug.annual.t
index 9c5384d72..37abfaa10 100755
--- a/src/tests/bug.annual.t
+++ b/src/tests/bug.annual.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 13;
+use Test::More tests => 14;
 
 # Create the rc file.
 if (open my $fh, '>', 'annual.rc')
@@ -72,6 +72,9 @@ like ($output, qr/11\s+1\/1\/2009\s+-\s+foo/, 'synthetic 10 no creep');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'annual.rc';
 ok (!-r 'annual.rc', 'Removed annual.rc');
 
diff --git a/src/tests/bug.concat.t b/src/tests/bug.concat.t
index d711c0df7..3d0a1f0e8 100755
--- a/src/tests/bug.concat.t
+++ b/src/tests/bug.concat.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 6;
+use Test::More tests => 7;
 
 # Create the rc file.
 if (open my $fh, '>', 'bug_concat.rc')
@@ -71,6 +71,9 @@ like ($output, qr/Description\s+aaa bbb:ccc ddd\n/, 'properly concatenated');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'bug_concat.rc';
 ok (!-r 'bug_concat.rc', 'Removed bug_concat.rc');
 
diff --git a/src/tests/bug.hang.t b/src/tests/bug.hang.t
index dbe229919..339403810 100755
--- a/src/tests/bug.hang.t
+++ b/src/tests/bug.hang.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 5;
+use Test::More tests => 6;
 
 # Create the rc file.
 if (open my $fh, '>', 'hang.rc')
@@ -76,6 +76,9 @@ ok (!-r 'shadow.txt', 'Removed shadow.txt');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'hang.rc';
 ok (!-r 'hang.rc', 'Removed hang.rc');
 
diff --git a/src/tests/bug.period.t b/src/tests/bug.period.t
index 49f95a4de..13ff94401 100755
--- a/src/tests/bug.period.t
+++ b/src/tests/bug.period.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 41;
+use Test::More tests => 42;
 
 # Create the rc file.
 if (open my $fh, '>', 'period.rc')
@@ -157,6 +157,9 @@ like ($output, qr/\b2y\b/,         'verify 2y');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'period.rc';
 ok (!-r 'period.rc', 'Removed period.rc');
 
diff --git a/src/tests/bug.sort.t b/src/tests/bug.sort.t
index c1e4588f5..4623a2571 100755
--- a/src/tests/bug.sort.t
+++ b/src/tests/bug.sort.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 5;
+use Test::More tests => 6;
 
 # Create the rc file.
 if (open my $fh, '>', 'bug_sort.rc')
@@ -54,6 +54,9 @@ like ($output, qr/three.*one.*two/msi, 'list did not hang after pri:H on 1');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'bug_sort.rc';
 ok (!-r 'bug_sort.rc', 'Removed bug_sort.rc');
 
diff --git a/src/tests/bug.summary.t b/src/tests/bug.summary.t
index c98b58d03..62999a479 100755
--- a/src/tests/bug.summary.t
+++ b/src/tests/bug.summary.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 6;
+use Test::More tests => 7;
 
 # Create the rc file.
 if (open my $fh, '>', 'summary.rc')
@@ -60,6 +60,9 @@ ok (!-r 'pending.data', 'Removed pending.data');
 unlink 'completed.data';
 ok (!-r 'completed.data', 'Removed completed.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'summary.rc';
 ok (!-r 'summary.rc', 'Removed summary.rc');
 
diff --git a/src/tests/cal.t b/src/tests/cal.t
index 16846025f..fe1892ef6 100755
--- a/src/tests/cal.t
+++ b/src/tests/cal.t
@@ -30,7 +30,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 35;
+use Test::More tests => 36;
 
 # Create the rc file.
 if (open my $fh, '>', 'cal.rc')
@@ -111,6 +111,9 @@ unlike ($output, qr/May 2010/,     'May 2010 is not displayed');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'cal.rc';
 ok (!-r 'cal.rc', 'Removed cal.rc');
 
diff --git a/src/tests/color.active.t b/src/tests/color.active.t
index 0ad678223..190011308 100755
--- a/src/tests/color.active.t
+++ b/src/tests/color.active.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 5;
+use Test::More tests => 6;
 
 # Create the rc file.
 if (open my $fh, '>', 'color.rc')
@@ -53,6 +53,9 @@ like ($output, qr/ \033\[31m        .* red     .* \033\[0m /x, 'color.active');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'color.rc';
 ok (!-r 'color.rc', 'Removed color.rc');
 
diff --git a/src/tests/color.disable.t b/src/tests/color.disable.t
index c4a0f4a58..cf07308ef 100755
--- a/src/tests/color.disable.t
+++ b/src/tests/color.disable.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 6;
+use Test::More tests => 7;
 
 # Create the rc file.
 if (open my $fh, '>', 'color.rc')
@@ -51,6 +51,9 @@ unlike ($output, qr/\033\[0m/,  'color.disable - no color reset');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'color.rc';
 ok (!-r 'color.rc', 'Removed color.rc');
 
diff --git a/src/tests/color.due.t b/src/tests/color.due.t
index af1f0077e..463ec0159 100755
--- a/src/tests/color.due.t
+++ b/src/tests/color.due.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 5;
+use Test::More tests => 6;
 
 # Create the rc file.
 if (open my $fh, '>', 'color.rc')
@@ -52,6 +52,9 @@ like ($output, qr/ \033\[31m        .* red .* \033\[0m/x, 'color.due');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'color.rc';
 ok (!-r 'color.rc', 'Removed color.rc');
 
diff --git a/src/tests/color.keyword.t b/src/tests/color.keyword.t
index 4e99e7400..3b25a31e6 100755
--- a/src/tests/color.keyword.t
+++ b/src/tests/color.keyword.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 6;
+use Test::More tests => 7;
 
 # Create the rc file.
 if (open my $fh, '>', 'color.rc')
@@ -55,6 +55,9 @@ like ($output, qr/ \033\[32m        .* green   .* \033\[0m      /x, 'color.keywo
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'color.rc';
 ok (!-r 'color.rc', 'Removed color.rc');
 
diff --git a/src/tests/color.overdue.t b/src/tests/color.overdue.t
index 9555a92cd..9f7ee721c 100755
--- a/src/tests/color.overdue.t
+++ b/src/tests/color.overdue.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 5;
+use Test::More tests => 6;
 
 # Create the rc file.
 if (open my $fh, '>', 'color.rc')
@@ -52,6 +52,9 @@ like ($output, qr/ \033\[31m        .* red .* \033\[0m/x, 'color.overdue');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'color.rc';
 ok (!-r 'color.rc', 'Removed color.rc');
 
diff --git a/src/tests/color.pri.t b/src/tests/color.pri.t
index 14a2ee42d..e6a8ebde3 100755
--- a/src/tests/color.pri.t
+++ b/src/tests/color.pri.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 7;
+use Test::More tests => 8;
 
 # Create the rc file.
 if (open my $fh, '>', 'color.rc')
@@ -59,6 +59,9 @@ like ($output, qr/ \033\[33m .* yellow .* \033\[0m /x, 'color.pri.none');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'color.rc';
 ok (!-r 'color.rc', 'Removed color.rc');
 
diff --git a/src/tests/color.project.t b/src/tests/color.project.t
index 2b90ec59c..702cc4523 100755
--- a/src/tests/color.project.t
+++ b/src/tests/color.project.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 5;
+use Test::More tests => 6;
 
 # Create the rc file.
 if (open my $fh, '>', 'color.rc')
@@ -52,6 +52,9 @@ like ($output, qr/ \033\[31m        .* red     .* \033\[0m /x, 'color.project.re
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'color.rc';
 ok (!-r 'color.rc', 'Removed color.rc');
 
diff --git a/src/tests/color.recurring.t b/src/tests/color.recurring.t
index 27990b1aa..437e2663b 100755
--- a/src/tests/color.recurring.t
+++ b/src/tests/color.recurring.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 5;
+use Test::More tests => 6;
 
 # Create the rc file.
 if (open my $fh, '>', 'color.rc')
@@ -52,6 +52,9 @@ like ($output, qr/ \033\[31m        .* red     .* \033\[0m      /x, 'color.recur
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'color.rc';
 ok (!-r 'color.rc', 'Removed color.rc');
 
diff --git a/src/tests/color.tag.t b/src/tests/color.tag.t
index da870e39e..5540c4735 100755
--- a/src/tests/color.tag.t
+++ b/src/tests/color.tag.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 6;
+use Test::More tests => 7;
 
 # Create the rc file.
 if (open my $fh, '>', 'color.rc')
@@ -55,6 +55,9 @@ like ($output, qr/ \033\[32m        .* green   .* \033\[0m /x, 'color.tag.green'
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'color.rc';
 ok (!-r 'color.rc', 'Removed color.rc');
 
diff --git a/src/tests/color.tagged.t b/src/tests/color.tagged.t
index 947a467e9..e33c891d9 100755
--- a/src/tests/color.tagged.t
+++ b/src/tests/color.tagged.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 5;
+use Test::More tests => 6;
 
 # Create the rc file.
 if (open my $fh, '>', 'color.rc')
@@ -52,6 +52,9 @@ like ($output, qr/ \033\[31m        .* red     .* \033\[0m /x, 'color.tagged');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'color.rc';
 ok (!-r 'color.rc', 'Removed color.rc');
 
diff --git a/src/tests/completed.t b/src/tests/completed.t
index a53c7e652..0b02fc81b 100755
--- a/src/tests/completed.t
+++ b/src/tests/completed.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 6;
+use Test::More tests => 7;
 
 # Create the rc file.
 if (open my $fh, '>', 'completed.rc')
@@ -57,6 +57,9 @@ ok (!-r 'pending.data', 'Removed pending.data');
 unlink 'completed.data';
 ok (!-r 'completed.data', 'Removed completed.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'completed.rc';
 ok (!-r 'completed.rc', 'Removed completed.rc');
 
diff --git a/src/tests/config.obsolete.t b/src/tests/config.obsolete.t
index 7a5f34bc1..123bccf3d 100755
--- a/src/tests/config.obsolete.t
+++ b/src/tests/config.obsolete.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 5;
+use Test::More tests => 6;
 
 # Create the rc file.
 if (open my $fh, '>', 'obsolete.rc')
@@ -50,6 +50,9 @@ like ($output, qr/  foo\n/, 'unsupported configuration variable');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'obsolete.rc';
 ok (!-r 'obsolete.rc', 'Removed obsolete.rc');
 
diff --git a/src/tests/confirmation.t b/src/tests/confirmation.t
index 955cace13..dd9c6bc9e 100755
--- a/src/tests/confirmation.t
+++ b/src/tests/confirmation.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 26;
+use Test::More tests => 27;
 
 # Create the rc file.
 if (open my $fh, '>', 'confirm.rc')
@@ -99,6 +99,9 @@ like ($output, qr/(Permanently delete task 7 'foo'\? \(y\/n\)) \1 \1/, 'confirma
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'response.txt';
 ok (!-r 'response.txt', 'Removed response.txt');
 
diff --git a/src/tests/custom.columns.t b/src/tests/custom.columns.t
index ab1927b65..c9dd4bb64 100755
--- a/src/tests/custom.columns.t
+++ b/src/tests/custom.columns.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 4;
+use Test::More tests => 5;
 
 # Create the rc file.
 if (open my $fh, '>', 'custom.rc')
@@ -50,6 +50,9 @@ like ($output, qr/Unrecognized column name: foo\n/, 'custom report spotted inval
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'custom.rc';
 ok (!-r 'custom.rc', 'Removed custom.rc');
 
diff --git a/src/tests/custom.recur_ind.t b/src/tests/custom.recur_ind.t
index 0c7746016..d1bf096cb 100755
--- a/src/tests/custom.recur_ind.t
+++ b/src/tests/custom.recur_ind.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 6;
+use Test::More tests => 7;
 
 # Create the rc file.
 if (open my $fh, '>', 'custom.rc')
@@ -54,6 +54,9 @@ unlike ($output, qr/2\s+R/, 'No recurrence indicator t2');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'custom.rc';
 ok (!-r 'custom.rc', 'Removed custom.rc');
 
diff --git a/src/tests/custom.t b/src/tests/custom.t
index 5ca345aa0..43f6b9404 100755
--- a/src/tests/custom.t
+++ b/src/tests/custom.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 6;
+use Test::More tests => 7;
 
 # Create the rc file.
 if (open my $fh, '>', 'custom.rc')
@@ -56,6 +56,9 @@ unlike ($output, qr/two/, 'custom filter excluded');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'custom.rc';
 ok (!-r 'custom.rc', 'Removed custom.rc');
 
diff --git a/src/tests/custom.tag_ind.t b/src/tests/custom.tag_ind.t
index 3bbfe5443..bd659eb84 100755
--- a/src/tests/custom.tag_ind.t
+++ b/src/tests/custom.tag_ind.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 6;
+use Test::More tests => 7;
 
 # Create the rc file.
 if (open my $fh, '>', 'custom.rc')
@@ -54,6 +54,9 @@ unlike ($output, qr/2\s+\+/, 'No tag indicator t2');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'custom.rc';
 ok (!-r 'custom.rc', 'Removed custom.rc');
 
diff --git a/src/tests/dateformat.t b/src/tests/dateformat.t
index c08cdb884..af8988de7 100755
--- a/src/tests/dateformat.t
+++ b/src/tests/dateformat.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 8;
+use Test::More tests => 9;
 
 # Create the rc file.
 if (open my $fh, '>', 'date1.rc')
@@ -62,6 +62,9 @@ like ($output, qr/\b12\/1\/09\b/, 'date format m/d/y parsed');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'date1.rc';
 ok (!-r 'date1.rc', 'Removed date1.rc');
 
diff --git a/src/tests/default.t b/src/tests/default.t
index d30a1d1d1..b80e81a0e 100755
--- a/src/tests/default.t
+++ b/src/tests/default.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 16;
+use Test::More tests => 17;
 
 # Create the rc file.
 if (open my $fh, '>', 'default.rc')
@@ -76,6 +76,9 @@ like ($output, qr/1 PROJECT L .+ priority specified/, 'default command worked');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'default.rc';
 ok (!-r 'default.rc', 'Removed default.rc');
 
diff --git a/src/tests/delete.t b/src/tests/delete.t
index 35c7438b4..daaff3afd 100755
--- a/src/tests/delete.t
+++ b/src/tests/delete.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 16;
+use Test::More tests => 18;
 
 # Create the rc file.
 if (open my $fh, '>', 'undelete.rc')
@@ -71,6 +71,10 @@ ok (-r 'completed.data', 'Need to remove completed.data');
 unlink 'completed.data';
 ok (!-r 'completed.data', 'Removed completed.data');
 
+ok (-r 'undo.data', 'Need to remove undo.data');
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'undelete.rc';
 ok (!-r 'undelete.rc', 'Removed undelete.rc');
 
diff --git a/src/tests/due.t b/src/tests/due.t
index 58ecc8a30..d486a572e 100755
--- a/src/tests/due.t
+++ b/src/tests/due.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 5;
+use Test::More tests => 6;
 
 # Create the rc file.
 if (open my $fh, '>', 'due.rc')
@@ -60,6 +60,9 @@ like ($output, qr/\s+$almost\s+/, 'two not marked due');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'due.rc';
 ok (!-r 'due.rc', 'Removed due.rc');
 
diff --git a/src/tests/duplicate.t b/src/tests/duplicate.t
index d02321e86..19ea26911 100755
--- a/src/tests/duplicate.t
+++ b/src/tests/duplicate.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 11;
+use Test::More tests => 12;
 
 # Create the rc file.
 if (open my $fh, '>', 'dup.rc')
@@ -59,6 +59,9 @@ like ($output, qr/Tags\s+tag/,        'duplicate added tag');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'dup.rc';
 ok (!-r 'dup.rc', 'Removed dup.rc');
 
diff --git a/src/tests/enpassant.t b/src/tests/enpassant.t
index e1f6978fe..68d715eae 100755
--- a/src/tests/enpassant.t
+++ b/src/tests/enpassant.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 11;
+use Test::More tests => 12;
 
 # Create the rc file.
 if (open my $fh, '>', 'enp.rc')
@@ -57,6 +57,9 @@ like ($output, qr/Tags\s+tag/,            'en passant 2 description change');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'enp.rc';
 ok (!-r 'enp.rc', 'Removed enp.rc');
 
diff --git a/src/tests/export.t b/src/tests/export.t
index 6f540b59c..0d23d5589 100755
--- a/src/tests/export.t
+++ b/src/tests/export.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 7;
+use Test::More tests => 8;
 
 # Create the rc file.
 if (open my $fh, '>', 'export.rc')
@@ -70,6 +70,9 @@ ok (!-r 'export.txt', 'Removed export.txt');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'export.rc';
 ok (!-r 'export.rc', 'Removed export.rc');
 
diff --git a/src/tests/filter.t b/src/tests/filter.t
index 64ec1314c..8deff0228 100755
--- a/src/tests/filter.t
+++ b/src/tests/filter.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 129;
+use Test::More tests => 130;
 
 # Create the rc file.
 if (open my $fh, '>', 'filter.rc')
@@ -213,6 +213,9 @@ unlike ($output, qr/seven/, 'n7');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'filter.rc';
 ok (!-r 'filter.rc', 'Removed filter.rc');
 
diff --git a/src/tests/import.143.t b/src/tests/import.143.t
index 5ca5313f9..9dc392ad6 100755
--- a/src/tests/import.143.t
+++ b/src/tests/import.143.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 8;
+use Test::More tests => 9;
 
 # Create the rc file.
 if (open my $fh, '>', 'import.rc')
@@ -63,6 +63,9 @@ ok (!-r 'import.txt', 'Removed import.txt');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'import.rc';
 ok (!-r 'import.rc', 'Removed import.rc');
 
diff --git a/src/tests/import.150.t b/src/tests/import.150.t
index ec73c744e..94634fe8f 100755
--- a/src/tests/import.150.t
+++ b/src/tests/import.150.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 8;
+use Test::More tests => 9;
 
 # Create the rc file.
 if (open my $fh, '>', 'import.rc')
@@ -63,6 +63,9 @@ ok (!-r 'import.txt', 'Removed import.txt');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'import.rc';
 ok (!-r 'import.rc', 'Removed import.rc');
 
diff --git a/src/tests/import.160.t b/src/tests/import.160.t
index d787b7583..d58c68acd 100755
--- a/src/tests/import.160.t
+++ b/src/tests/import.160.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 8;
+use Test::More tests => 9;
 
 # Create the rc file.
 if (open my $fh, '>', 'import.rc')
@@ -63,6 +63,9 @@ ok (!-r 'import.txt', 'Removed import.txt');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'import.rc';
 ok (!-r 'import.rc', 'Removed import.rc');
 
diff --git a/src/tests/import.cmd.t b/src/tests/import.cmd.t
index 890a9c700..8a570e036 100755
--- a/src/tests/import.cmd.t
+++ b/src/tests/import.cmd.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 8;
+use Test::More tests => 9;
 
 # Create the rc file.
 if (open my $fh, '>', 'import.rc')
@@ -62,6 +62,9 @@ ok (!-r 'import.txt', 'Removed import.txt');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'import.rc';
 ok (!-r 'import.rc', 'Removed import.rc');
 
diff --git a/src/tests/import.csv.t b/src/tests/import.csv.t
index 6b97c17eb..34d5c4830 100755
--- a/src/tests/import.csv.t
+++ b/src/tests/import.csv.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 8;
+use Test::More tests => 9;
 
 # Create the rc file.
 if (open my $fh, '>', 'import.rc')
@@ -69,6 +69,9 @@ ok (!-r 'import.txt', 'Removed import.txt');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'import.rc';
 ok (!-r 'import.rc', 'Removed import.rc');
 
diff --git a/src/tests/import.todo.t b/src/tests/import.todo.t
index 17e52d5ed..679c6fa5e 100755
--- a/src/tests/import.todo.t
+++ b/src/tests/import.todo.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 10;
+use Test::More tests => 11;
 
 # Create the rc file.
 if (open my $fh, '>', 'import.rc')
@@ -69,6 +69,9 @@ ok (!-r 'pending.data', 'Removed pending.data');
 unlink 'completed.data';
 ok (!-r 'completed.data', 'Removed completed.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'import.rc';
 ok (!-r 'import.rc', 'Removed import.rc');
 
diff --git a/src/tests/import.txt.t b/src/tests/import.txt.t
index 01069c6aa..0356ea637 100755
--- a/src/tests/import.txt.t
+++ b/src/tests/import.txt.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 9;
+use Test::More tests => 10;
 
 # Create the rc file.
 if (open my $fh, '>', 'import.rc')
@@ -64,6 +64,9 @@ ok (!-r 'import.txt', 'Removed import.txt');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'import.rc';
 ok (!-r 'import.rc', 'Removed import.rc');
 
diff --git a/src/tests/label.t b/src/tests/label.t
index 2f913a469..855d6249f 100755
--- a/src/tests/label.t
+++ b/src/tests/label.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 8;
+use Test::More tests => 9;
 
 # Create the rc file.
 if (open my $fh, '>', 'custom.rc')
@@ -59,6 +59,9 @@ unlike ($output, qr/two/,         'custom filter excluded');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'custom.rc';
 ok (!-r 'custom.rc', 'Removed custom.rc');
 
diff --git a/src/tests/nag.t b/src/tests/nag.t
index 398250514..cc1442b31 100755
--- a/src/tests/nag.t
+++ b/src/tests/nag.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 9;
+use Test::More tests => 10;
 
 # Create the rc file.
 if (open my $fh, '>', 'nag.rc')
@@ -58,6 +58,9 @@ unlike (qx{../task rc:nag.rc do 1}, qr/NAG/, 'do due:yesterday -> no nag');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'nag.rc';
 ok (!-r 'nag.rc', 'Removed nag.rc');
 
diff --git a/src/tests/next.t b/src/tests/next.t
index 2130f6626..a221e56fa 100755
--- a/src/tests/next.t
+++ b/src/tests/next.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 5;
+use Test::More tests => 6;
 
 # Create the rc file.
 if (open my $fh, '>', 'next.rc')
@@ -54,6 +54,9 @@ like ($output, qr/\s3\sB\s+H\s+-\sBH\n/, 'BH shown');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'next.rc';
 ok (!-r 'next.rc', 'Removed next.rc');
 
diff --git a/src/tests/oldest.t b/src/tests/oldest.t
index 30718cec3..7b1e744e9 100755
--- a/src/tests/oldest.t
+++ b/src/tests/oldest.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 55;
+use Test::More tests => 56;
 
 # Create the rc file.
 if (open my $fh, '>', 'oldest.rc')
@@ -121,6 +121,9 @@ like   ($output, qr/eleven/, 'newest: eleven');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'oldest.rc';
 ok (!-r 'oldest.rc', 'Removed oldest.rc');
 
diff --git a/src/tests/overdue.t b/src/tests/overdue.t
index 94229c438..e6a36da61 100755
--- a/src/tests/overdue.t
+++ b/src/tests/overdue.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 6;
+use Test::More tests => 7;
 
 # Create the rc file.
 if (open my $fh, '>', 'due.rc')
@@ -53,6 +53,9 @@ unlike ($output, qr/three/, 'overdue: task 3 does not show up');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'due.rc';
 ok (!-r 'due.rc', 'Removed due.rc');
 
diff --git a/src/tests/recur.t b/src/tests/recur.t
index a6b014787..1bfc5ba91 100755
--- a/src/tests/recur.t
+++ b/src/tests/recur.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 5;
+use Test::More tests => 6;
 
 # Create the rc file.
 if (open my $fh, '>', 'recur.rc')
@@ -57,6 +57,9 @@ like ($output, qr/second .* third .* first/msx, 'weekly 3d daily');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'recur.rc';
 ok (!-r 'recur.rc', 'Removed recur.rc');
 
diff --git a/src/tests/recur.weekdays.t b/src/tests/recur.weekdays.t
index b2cb6baf4..b4731f55b 100755
--- a/src/tests/recur.weekdays.t
+++ b/src/tests/recur.weekdays.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 7;
+use Test::More tests => 8;
 
 # Create the rc file.
 if (open my $fh, '>', 'recur.rc')
@@ -57,6 +57,9 @@ ok (!-r 'pending.data', 'Removed pending.data');
 unlink 'completed.data';
 ok (!-r 'completed.data', 'Removed completed.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'recur.rc';
 ok (!-r 'recur.rc', 'Removed recur.rc');
 
diff --git a/src/tests/sequence.t b/src/tests/sequence.t
index 17149fd95..fe54a797e 100755
--- a/src/tests/sequence.t
+++ b/src/tests/sequence.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 27;
+use Test::More tests => 28;
 
 # Create the rc file.
 if (open my $fh, '>', 'seq.rc')
@@ -118,6 +118,9 @@ like ($output, qr/\d+\/\d+\/\d+ note/, 'sequence annotate 2');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'seq.rc';
 ok (!-r 'seq.rc', 'Removed seq.rc');
 
diff --git a/src/tests/shadow.t b/src/tests/shadow.t
index 079814657..efcb7a561 100755
--- a/src/tests/shadow.t
+++ b/src/tests/shadow.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 21;
+use Test::More tests => 22;
 
 # Create the rc file.
 if (open my $fh, '>', 'shadow.rc')
@@ -75,6 +75,9 @@ ok (!-r 'pending.data', 'Removed pending.data');
 unlink 'completed.data';
 ok (!-r 'completed.data', 'Removed completed.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'shadow.rc';
 ok (!-r 'shadow.rc', 'Removed shadow.rc');
 
diff --git a/src/tests/start.t b/src/tests/start.t
index 20b7d92bc..4147a879a 100755
--- a/src/tests/start.t
+++ b/src/tests/start.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 12;
+use Test::More tests => 14;
 
 # Create the rc file.
 if (open my $fh, '>', 'start.rc')
@@ -66,6 +66,10 @@ ok (-r 'pending.data', 'Need to remove pending.data');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+ok (-r 'undo.data', 'Need to remove undo.data');
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'start.rc';
 ok (!-r 'start.rc', 'Removed start.rc');
 
diff --git a/src/tests/subproject.t b/src/tests/subproject.t
index 4fb46bd19..dcc1abe0b 100755
--- a/src/tests/subproject.t
+++ b/src/tests/subproject.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 11;
+use Test::More tests => 12;
 
 # Create the rc file.
 if (open my $fh, '>', 'sp.rc')
@@ -66,6 +66,9 @@ like ($output, qr/No matches./, 'abc,ab,a,b | abcd -> nul');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'sp.rc';
 ok (!-r 'sp.rc', 'Removed sp.rc');
 
diff --git a/src/tests/substitute.t b/src/tests/substitute.t
index 16bb13d4d..cd685a5cc 100755
--- a/src/tests/substitute.t
+++ b/src/tests/substitute.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 9;
+use Test::More tests => 10;
 
 # Create the rc file.
 if (open my $fh, '>', 'subst.rc')
@@ -72,6 +72,9 @@ like ($output, qr/aaa  ccc/, 'word deletion in description');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'subst.rc';
 ok (!-r 'subst.rc', 'Removed subst.rc');
 
diff --git a/src/tests/tag.t b/src/tests/tag.t
index f5966164f..abd2f9af0 100755
--- a/src/tests/tag.t
+++ b/src/tests/tag.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 9;
+use Test::More tests => 10;
 
 # Create the rc file.
 if (open my $fh, '>', 'tag.rc')
@@ -66,6 +66,9 @@ unlike ($output, qr/^Tags/m, '-missing NOP');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'tag.rc';
 ok (!-r 'tag.rc', 'Removed tag.rc');
 
diff --git a/src/tests/tdb.t.cpp b/src/tests/tdb.t.cpp
index 421bf4a7a..602fc3137 100644
--- a/src/tests/tdb.t.cpp
+++ b/src/tests/tdb.t.cpp
@@ -53,6 +53,7 @@ int main (int argc, char** argv)
     // Remove any residual test file.
     unlink ("./pending.data");
     unlink ("./completed.data");
+    unlink ("./undo.data");
 
     // Try reading an empty database.
     Filter filter;
@@ -153,6 +154,7 @@ int main (int argc, char** argv)
 
   unlink ("./pending.data");
   unlink ("./completed.data");
+  unlink ("./undo.data");
 
   return 0;
 }
diff --git a/src/tests/undo.t b/src/tests/undo.t
index 3776c2d9a..58c6970b7 100755
--- a/src/tests/undo.t
+++ b/src/tests/undo.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 15;
+use Test::More tests => 17;
 
 # Create the rc file.
 if (open my $fh, '>', 'undo.rc')
@@ -68,6 +68,10 @@ ok (-r 'completed.data', 'Need to remove completed.data');
 unlink 'completed.data';
 ok (!-r 'completed.data', 'Removed completed.data');
 
+ok (-r 'undo.data', 'Need to remove undo.data');
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'undo.rc';
 ok (!-r 'undo.rc', 'Removed undo.rc');
 
diff --git a/src/tests/utf8.t b/src/tests/utf8.t
index e3e641813..1fbfd91e5 100755
--- a/src/tests/utf8.t
+++ b/src/tests/utf8.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 6;
+use Test::More tests => 7;
 
 # Create the rc file.
 if (open my $fh, '>', 'utf8.rc')
@@ -73,6 +73,9 @@ like ($output, qr/utf8 in tag/, 'utf8 in tag works');
 unlink 'pending.data';
 ok (!-r 'pending.data', 'Removed pending.data');
 
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
 unlink 'utf8.rc';
 ok (!-r 'utf8.rc', 'Removed utf8.rc');