explain why urchin is called urchin

It previously just showed the last three lines. It needs to show the
last four lines now because urchin now displays skipped tests.

AUTHORS

@@ -0,0 +1,9 @@
+Authors
+-------
+David Jones
+Michael Klement
+Thomas Levine
+
+Maintainer
+-------
+Thomas Levine <_@thomaslevine.com>

HISTORY

@@ -1,5 +1,23 @@
 HISTORY
--------
+=======
+
+Version 0.0.6
+---------------------
+
+* Produce TAP output with the -t flag.
+* Add a + sign in front of directories in the normal output so that they
+  line up with non-directories.
+* Display skipped tests in the normal output and in the TAP output.
+* Correct some things in the documentation.
+* Rearrange things in the documentation to be more clear.
+* Pass the -e flag to exit urchin if any single test fails.
+* Remove the undocumented, experimental -x flag now that shall exists.
+* Display version number with the -v flag.
+* Document why Urchin is called "Urchin"
+
+These changes are made somewhat separately in the branches "exit-on-fail",
+"remove-urchin-x", "tap", and "update-readme". They are rebased into one
+branch, "tlevine-2016-02", for merging into "master".
 
 Version 0.0.5
 ---------------------

cross-shell-tests

@@ -6,7 +6,7 @@ for shell in dash bash ksh zsh; do
   if which $shell > /dev/null 2> /dev/null; then
     echo
     echo Running urchin tests in $shell
-    $shell urchin tests | tail -n 3
+    $shell urchin -s $shell tests | tail -n 4
   else
     echo
     echo Skipping $shell because it is not in the PATH

readme.md

@@ -8,6 +8,10 @@ Urchin is a file-based test harness, normally used for testing shell programs.
 It is written in portable shell and should thus work on GNU/Linux, BSD
 (including Mac OS X), and other Unix-like platforms.
 
+Urchin is called "Urchin" because
+[sea urchins](https://en.wikipedia.org/wiki/Sea_urchin)
+have shells called "tests".
+
 ## Try it out
 Urchin's tests are written in Urchin, so you can run them to see what Urchin
 is like. Clone the repository

tests/.die-on-fail/2 should run.

@@ -0,0 +1 @@
+false

tests/.die-on-fail/3 should not run.

@@ -0,0 +1 @@
+false

tests/.die-on-fail/4 should not run.

@@ -0,0 +1 @@
+false

tests/Cross-shell test support/.test-run-by-specified-shell/With -s, a non-sh test script should be invoked directly.

@@ -1,5 +1,3 @@
-#!/usr/bin/awk -f
-
-# This script will only succeed if it is indeed processed by awk.
-
-BEGIN { print "ok" }
+#!/usr/bin/env true
+true will processed the contents of this script, but that
+means that nothing will happen and the script will exit 0 

tests/Cross-shell test support/The -s option should invoke tests with the specified shell.

@@ -3,6 +3,5 @@
 # Tests the `-s <shell> option, which invokes shebang-less and sh-shebang-line test scripts with the specified shell (for testing *sourced* shell code).
 
 which bash >/dev/null || { echo "Cannot test -s option: bash cannot be located." >&2; exit 2; }
-which /usr/bin/awk >/dev/null || { echo "Cannot test -s option: /usr/bin/awk not found." >&2; exit 2; }
 
 ../../urchin -s bash ./.test-run-by-specified-shell

tests/Exit on fail if -e is passed.

@@ -0,0 +1,11 @@
+tmp=$(mktemp)
+../urchin -e -f ./.die-on-fail > $tmp
+result=$?
+
+grep '1 should run.' $tmp
+grep '2 should run.' $tmp
+grep -v '3 should not run.' $tmp
+grep -v '4 should not run.' $tmp
+
+rm $tmp
+exit $result

tests/Print version on -v.

@@ -0,0 +1,2 @@
+#!/bin/sh
+../urchin -v | grep '[0-9.]\{3,\}'

tests/TAP/.expected-output

@@ -0,0 +1,10 @@
+# Begin - .testsuite/
+not ok 1 - a
+# ------------ Begin output ------------
+# This is stdout from a.
+# ------------ End output ------------
+ok 2 - b
+ok 3 - # SKIP c
+# End - .testsuite/
+# Took 0 seconds.
+1..3

tests/TAP/.testsuite/a

@@ -0,0 +1,4 @@
+#!/bin/sh
+echo This is stderr from a. > /dev/stderr
+echo This is stdout from a. > /dev/stdout
+false

tests/TAP/.testsuite/b

@@ -0,0 +1,4 @@
+#!/bin/sh
+echo This is stderr from b. > /dev/stderr
+echo This is stdout from b. > /dev/stdout
+true

tests/TAP/.testsuite/c

@@ -0,0 +1 @@
+This should not be run.

tests/TAP/Running with -t should produce TAP output.

@@ -0,0 +1,4 @@
+tmp=$(mktemp)
+
+../../urchin -t .testsuite/ | sed 1d > $tmp
+diff $tmp .expected-output

tests/urchin -x should start the $TEST_SHELL.

@@ -1,3 +0,0 @@
-#!/bin/sh
-
-test c = $(../urchin -x .print-arg-3 a 'b b b b' c d e)

urchin

@@ -4,6 +4,9 @@
 # which breaks fullpath().
 unset CDPATH
 
+# Urchin version number
+VERSION=0.0.6
+
 fullpath() {
   (
     cd -- "$1"
@@ -30,9 +33,16 @@ recurse() {
 
   if [ -d "$potential_test" ]
     then
-    (
+
+    if $tap_format; then
+      indent $indent_level | sed 's/  /#/g'
+      echo "# Begin - ${potential_test}"
+    else
       indent $indent_level
-      echo "  ${potential_test}"
+      echo "+ ${potential_test}"
+    fi
+
+    (
       cd -- "$potential_test"
       [ -f setup_dir ] && [ -x setup_dir ] && ./setup_dir >> "$stdout_file"
 
@@ -47,15 +57,27 @@ recurse() {
 
         # $2 instead of $indent_level so it doesn't clash
         recurse "${test}" $(( $2 + 1 )) "$shell_for_sh_tests"
+        exit_code=$?
+
+        if $exit_on_fail && test $exit_code -ne 0; then
+          [ -f teardown ] && [ -x teardown ] && ./teardown >> "$stdout_file"
+          [ -f teardown_dir ] && [ -x teardown_dir ] && ./teardown_dir >> "$stdout_file"
+          return 1
+        fi
 
         [ -f teardown ] && [ -x teardown ] && ./teardown >> "$stdout_file"
       done
       [ -f teardown_dir ] && [ -x teardown_dir ] && ./teardown_dir >> "$stdout_file"
-      echo
     )
-  elif [ -x "$potential_test" ]
+    if $tap_format; then
+      indent $indent_level | sed 's/  /#/g'
+      echo "# End - ${potential_test}"
+    else
+      echo
+    fi
+  else
+    if [ -x "$potential_test" ]
       then
-
       [ -f setup ] && [ -x setup ] && ./setup >> "$stdout_file"
 
       # Run the test
@@ -67,24 +89,60 @@ recurse() {
       fi
       exit_code="$?"
 
-
       [ -f teardown ] && [ -x teardown ] && ./teardown >> "$stdout_file"
+      if [ $exit_code -eq 0 ]; then
+        result=success
+      else
+        result=fail
+      fi
+    else
+      result=skip
+    fi
 
+    echo "${result}" >> "$logfile"
+    if $tap_format; then
+      n=$(grep -ce '^\(success\|fail\|skip\)' "$logfile")
+
+      if [ "$result" == fail ]; then
+        not='not '
+      else
+        not=''
+      fi
+      if [ "$result" == skip ]; then
+        skip='# SKIP '
+      else
+        skip=''
+      fi
+      echo "${not}ok $n - ${skip}${potential_test}"
+      if [ "$result" == fail ]; then
+        echo '# ------------ Begin output ------------'
+        sed 's/^/# /' "$stdout_file"
+        echo '# ------------ End output ------------'
+      fi
+    else
       indent $indent_level
-    if [ $exit_code -eq 0 ]
-      then
+      case "$result" in
+        success)
           # On success, print a green '✓'
           printf '\033[32m✓ \033[0m'
           printf '%s\n' "${potential_test}"
-      printf '%s\n' "${potential_test} passed" >> "$logfile"
-    else
+        ;;
+        fail)
           # On fail, print a red '✗'
           printf '\033[31m✗ \033[0m'
           printf '%s\n' "${potential_test}"
-      printf '%s\n' "${potential_test} failed" >> "$logfile"
           printf '\033[31m' # Print output captured from failed test in red.
           cat "$stdout_file"
           printf '\033[0m'
+        ;;
+        skip)
+          printf '  %s\n' "${potential_test}"
+        ;;
+      esac
+    fi
+
+    if $exit_on_fail && test 0 -ne $exit_code; then
+      return 1
     fi
   fi
   [ $indent_level -eq 0 ] && rm "$stdout_file"
@@ -105,17 +163,18 @@ $USAGE
 
 -s <shell>  Invoke test scripts that either have no shebang line at all or
             have shebang line "#!/bin/sh" with the specified shell.
+-e          Stop running if any single test fails. This is helpful if you want
+            to use Urchin to run things other than tests, such as a set of
+            configuration scripts.
 -f          Force running even if the test directory's name does not
             contain the word "test".
--h          This help.
+-t          Format output in Test Anything Protocol (TAP)
+-h, --help  This help.
+-v          Display the version number.
 
 Go to https://github.com/tlevine/urchin for documentation on writing tests.
 
 EOF
-  # [Experimental -x option left undocumented for now.]
-  # -x          [Experimental; not meant for direct invocation, but for use in
-  #             the shebang line of test scripts]
-  #             Run with "\$TEST_SHELL", falling back on /bin/sh.
 }
 
 plural () {
@@ -131,7 +190,11 @@ plural () {
 }
 
 urchin_go() {
-  echo Running tests at $(date +%Y-%m-%dT%H:%M:%S) | tee "$logfile"
+  rm -f "$logfile"
+  if "$tap_format"; then
+    printf \#\ 
+  fi
+  echo Running tests at $(date +%Y-%m-%dT%H:%M:%S)
   start=$(date +%s)
 
   # Determine the environment variable to define for test scripts
@@ -151,13 +214,23 @@ urchin_go() {
 
   finish=$(date +%s)
   elapsed=$(($finish - $start))
+
+  passed=$(grep -c '^success' "$logfile")
+  failed=$(grep -c '^fail' "$logfile")
+  skipped=$(grep -c '^skip' "$logfile")
+  if $tap_format; then
+    echo "# Took $elapsed $(plural second $elapsed)."
+    echo 1..$(($passed + $failed + $skipped))
+  else
     echo "Done, took $elapsed $(plural second $elapsed)."
-  set -- $(grep -e 'passed$' "$logfile"|wc -l) $(grep -e 'failed$' "$logfile"|wc -l)
-  printf '%s\n' "$1 $(plural test "$1") passed."
-  [ $2 -gt 0 ] && printf '\033[31m' || printf '\033[32m' # If tests failed, print the message in red, otherwise in green.
-  printf '%s\n' "$2 $(plural test "$2") failed."
+    printf '%s\n' "$passed $(plural test "$passed") passed."
+    printf '%s\n' "$skipped $(plural test "$skipped") skipped."
+    [ $failed -gt 0 ] && printf '\033[31m' || printf '\033[32m' # If tests failed, print the message in red, otherwise in green.
+    printf '%s\n' "$failed $(plural test "$failed") failed."
     printf '\033[m'
-  return "$2"
+  fi
+  rm -f "$logfile"
+  test -z "$failed" || test "$failed" -eq '0'
 }
 
 urchin_molly_guard() {
@@ -174,22 +247,23 @@ urchin_molly_guard() {
 
 shell_for_sh_tests=
 force=false
+exit_on_fail=false
+tap_format=false
 while [ $# -gt 0 ]
 do
     case "$1" in
+        -e) exit_on_fail=true;;
         -f) force=true;;
         -s)
           shift
           shell_for_sh_tests=$1
           which "$shell_for_sh_tests" >/dev/null || { echo "Cannot find specified shell: '$shell_for_sh_tests'" >&2; urchin_help >&2; exit 2; }
           ;;
-        -x) # [EXPERIMENTAL; UNDOCUMENTED FOR NOW] `urchin -x <test-script>` in a test script's shebang line is equivalent to invoking that script with `"$TEST_SHELL" <test-script>`
-          shift
-          urchinsh=${TEST_SHELL:-/bin/sh}
-          "$urchinsh" "$@"
-          exit $?;;
+        -t) tap_format=true;;
         -h|--help) urchin_help
           exit 0;;
+        -v) echo "$VERSION"
+            exit;;
         -*) urchin_help >&2
             exit 1;;
         *)  break;;