Added "time(interval)" method. Also fixed some spelling errors.

doc/cmdtest.html

@@ -547,7 +547,7 @@ $ cmdtest . t                              # all CMDTEST_*.rb files in both dirs
 <td>Be more verbose.</td></tr>
 <tr><td class="option-group">
 <kbd><span class="option">--fast</span></kbd></td>
-<td>Run fast without ensuring that timestamps of newly created/modfied
+<td>Run fast without ensuring that timestamps of newly created/modified
 files are unique. This could make it impossible for Cmdtest to detect
 all side-effects of commands.</td></tr>
 <tr><td class="option-group">
@@ -556,11 +556,11 @@ all side-effects of commands.</td></tr>
 <tr><td class="option-group">
 <kbd><span class="option">--xml=<var>FILE</var></span></kbd></td>
 <td>Write summary on JUnit XML format.
-Useful when running under a continuouos integration server that
+Useful when running under a continuous integration server that
 understands JUnit reports.</td></tr>
 <tr><td class="option-group">
 <kbd><span class="option">-i</span></kbd></td>
-<td>Run in &quot;incermental&quot; mode. <strong>experimental</strong>
+<td>Run in &quot;incremental&quot; mode. <strong>experimental</strong>
 Cmdtest will try to run only those test methods that are failed or
 have changed since last time.</td></tr>
 </tbody>
@@ -666,6 +666,9 @@ For more details and examples see the section &quot;Matching standard output con
 <dt><tt class="docutils literal"><span class="pre">assert(flag,</span> <span class="pre">msg=nil)</span></tt></dt>
 <dd>Assert that <tt class="docutils literal"><span class="pre">flag</span></tt> is true. This assertion is a last resort, when no other
 assertion fits. Should normally not be used.</dd>
+<dt><tt class="docutils literal"><span class="pre">time(interval)</span></tt></dt>
+<dd>Assert that executing the command took a number of seconds inside the
+interval given as argument.</dd>
 </dl>
 </div>
 <div class="section" id="helper-functions">

doc/cmdtest.txt

@@ -248,7 +248,7 @@ Options
     Be more verbose.
 
 --fast
-    Run fast without ensuring that timestamps of newly created/modfied
+    Run fast without ensuring that timestamps of newly created/modified
     files are unique. This could make it impossible for Cmdtest to detect
     all side-effects of commands.
 
@@ -257,11 +257,11 @@ Options
 
 --xml=FILE
     Write summary on JUnit XML format.
-    Useful when running under a continuouos integration server that
+    Useful when running under a continuous integration server that
     understands JUnit reports.
 
 -i
-    Run in "incermental" mode. **experimental**
+    Run in "incremental" mode. **experimental**
     Cmdtest will try to run only those test methods that are failed or
     have changed since last time.
 
@@ -377,6 +377,9 @@ Assertions - misc
     Assert that ``flag`` is true. This assertion is a last resort, when no other
     assertion fits. Should normally not be used.
 
+``time(interval)``
+    Assert that executing the command took a number of seconds inside the
+    interval given as argument.
 
 Helper functions
 ++++++++++++++++

lib/cmdtest/testcase.rb

@@ -69,6 +69,7 @@ module Cmdtest
       @_in_cmd = false
       @_comment_str = nil
       @_prepend_path_dirs = []
+      @_t1 = @_t2 = 0
     end
 
     #------------------------------
@@ -184,6 +185,17 @@ module Cmdtest
 
     #------------------------------
 
+    def time(time_interval)
+      _process_after do
+        diff = @_t2 - @_t1
+        _assert diff >= time_interval.begin && diff <= time_interval.end do
+          "expected time in interval #{time_interval}"
+        end
+      end
+    end
+
+    #------------------------------
+
     def exit_zero
       _process_after do
         @_checked_status = true
@@ -490,7 +502,9 @@ module Cmdtest
       @_runner.notify("cmdline", @_cmdline, @_comment_str)
       @_comment_str = nil
       @_runner.prepend_path_dirs(@_prepend_path_dirs)
+      @_t1 = Time.now
       @_effects = @_work_dir.run_cmd(@_cmdline)
+      @_t2 = Time.now
 
       @_checked_status = false