From 3021402525074a0fd0a7b4af956e5183704b70b6 Mon Sep 17 00:00:00 2001
From: Jorge Bucaran <jbucaran@me.com>
Date: Sat, 17 Jan 2015 13:46:44 +0900
Subject: [PATCH] =?UTF-8?q?=E2=8C=81=20Update=20Fish-Spec=20=E2=8C=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

+ Add fish eval fix See #fish-shell/pull/1892
+ New and improved output system with colors, etc.
+ Support for multiple non-nested describe blocks.
+ Remove spec.log and favor `msg` plugin and standard echo.
+ `spec.eval` no longer evaluates multiple functions, acting now as a simplified
  router between the view `spec.view` and the controller `spec.run`.
+ Add new `spec.view` to act as a hub for all test output.
+ Add report with passed/failed tests to `spec.view`
+ Now test descriptions are used directly from the function name. Description
  fields are now optional.
---
 plugins/fish-spec/eval.fish                   |  60 ++++++++
 plugins/fish-spec/expect.fish                 |  74 +++++-----
 plugins/fish-spec/list.erase.fish             |  13 +-
 plugins/fish-spec/spec.eval.fish              | 103 +++-----------
 plugins/fish-spec/spec.functions.fish         | 108 +++++++++++++--
 plugins/fish-spec/spec.log.fish               |  56 --------
 plugins/fish-spec/spec.run.fish               |  75 +++++++---
 plugins/fish-spec/spec.view.fish              | 118 ++++++++++++++++
 .../spec/expect.to_be_false.spec.fish         |   6 +-
 .../spec/expect.to_be_true.spec.fish          |   2 +-
 .../spec/expect.to_contain.spec.fish          |  18 +--
 .../fish-spec/spec/expect.to_equal.spec.fish  |   6 +-
 .../spec/expect.to_not_contain.spec.fish      |  50 +++----
 plugins/fish-spec/spec/list.erase.spec.fish   |  43 ++++--
 plugins/fish-spec/spec/spec.spec.fish         | 130 ++++++++++++++++++
 script/run-tests.fish                         |   8 +-
 spec/oh-my-fish.spec.fish                     |  29 +---
 17 files changed, 612 insertions(+), 287 deletions(-)
 create mode 100644 plugins/fish-spec/eval.fish
 delete mode 100644 plugins/fish-spec/spec.log.fish
 create mode 100644 plugins/fish-spec/spec.view.fish
 create mode 100644 plugins/fish-spec/spec/spec.spec.fish

diff --git a/plugins/fish-spec/eval.fish b/plugins/fish-spec/eval.fish
new file mode 100644
index 0000000..3dd9c78
--- /dev/null
+++ b/plugins/fish-spec/eval.fish
@@ -0,0 +1,60 @@
+function eval -S -d "Evaluate parameters as a command"
+  # keep a copy of the previous $status and use restore_status
+  # to preserve the status in case the block that is evaluated
+  # does not modify the status itself.
+  set -l status_copy $status
+  function -S restore_status
+    return $status_copy
+  end
+
+  if not set -q argv[2]
+    # like most builtins, we only check for -h/--help
+    # if we only have a single argument
+    switch "$argv[1]"
+    case -h --help
+      __fish_print_help eval
+      return 0
+    end
+  end
+
+  # If we are in an interactive shell, eval should enable full
+  # job control since it should behave like the real code was
+  # executed. If we don't do this, commands that expect to be
+  # used interactively, like less, wont work using eval.
+
+  set -l mode
+  if status --is-interactive-job-control
+    set mode interactive
+  else
+    if status --is-full-job-control
+      set mode full
+    else
+      set mode none
+    end
+  end
+  if status --is-interactive
+    status --job-control full
+  end
+
+  # rfish: To eval 'foo', we construct a block "begin ; foo; end <&3 3<&-"
+  # The 'eval2_inner' is a param to 'begin' itself; I believe it does nothing.
+  # Note the redirections are also within the quotes.
+  #
+  # We then pipe this to 'source 3<&0' which dup2's 3 to stdin.
+  #
+  # You might expect that the dup2(3, stdin) should overwrite stdin,
+  # and therefore prevent 'source' from reading the piped-in block. This doesn't
+  # happen because when you pipe to a builtin, we don't overwrite stdin with the
+  # read end of the block; instead we set a separate fd in a variable 'builtin_stdin',
+  # which is what it reads from. So builtins are magic in that, in pipes, their stdin
+  # is not fd 0.
+
+  restore_status
+  echo "begin; $argv "\n" ;end eval2_inner <&3 3<&-" | source 3<&0
+  set -l res $status
+
+  status --job-control $mode
+  functions -e restore_status
+
+  return $res
+end
diff --git a/plugins/fish-spec/expect.fish b/plugins/fish-spec/expect.fish
index ee7a707..8c892fd 100644
--- a/plugins/fish-spec/expect.fish
+++ b/plugins/fish-spec/expect.fish
@@ -1,15 +1,20 @@
 # NAME
-#   expect - assert a list of expected values match an actual value.
+#   expect - assert a list of expected values match an actual value
 #
 # SYNOPSIS
-#   expect <expected>...
-#          <condition>
-#            --to-be-false      exit status is falsy
-#            --to-be-true       exit status is truthy
-#            --to-contain       <actual> values exist in <expected> list
-#            --to-no-contain    <actual> values does not exist in <expected> list
-#            --to-equal         <actual> value equals <expected> value
-#          <actual>
+#   expect <expected> <condition> <actual>
+
+# OPTIONS
+#   <expected>...
+#   <condition>
+#     --to-equal         <actual> value equals <expected> value
+#     --to-not-equal     <actual> value does not equals <expected> value
+#
+#     --to-contain       <actual> values exist in <expected> list
+#     --to-not-contain   <actual> values does not exist in <expected> list
+#     --to-be-true       exit status should be truthy
+#     --to-be-false      exit status should be falsy
+#   <actual>...
 #
 # EXAMPLE
 #   import plugins/fish-spec
@@ -21,29 +26,33 @@
 #     end
 #   end
 #   spec.run
+#
+# AUTHORS
+#   Bruno Pinto <@pfbruno>
+#   Jorge Bucaran <@bucaran>
 #/
 function expect
-  # Abort if last call to `expect` finished with $status 1. This allows to
-  # stop individual tests from running if at least one expect call fails.
-  if [ $status -eq 1 ]
-    return 1
-  end
+  set -l result 0
+  # Parse expected / actual lists
+  set -l actual    ""
+  set -l expected  ""
+  set -l condition ""
 
-  for i in (seq (count $argv))
-    if [ (echo $argv[$i] | grep '\-\-') ] # Expectation argument found
-      set -g condition $argv[$i]
-      set -g expected  $argv[1..(math "$i - 1")]
-
-      # No comparison required e.g. --to-be-true
-      if not [ (count $argv) = $i ]
-        set -g actual $argv[(math "$i + 1")..-1]
-      end
-
-      break
+  for index in (seq (count $argv))
+    switch $argv[$index]
+      # --condition found, split expected/actual lists
+      case --\*
+        set expected  $argv[1..(math $index-1)]
+        set condition $argv[$index]
+        # No comparison required e.g. --to-be-true
+        if [ $index -lt (count $argv) ]
+          set actual $argv[(math $index+1)..-1]
+        end
+        break
     end
   end
 
-  # Test conditions and save success/fail $status to return later.
+  # Test conditions
   switch $condition
     case --to-be-false
       eval "$expected"
@@ -65,16 +74,19 @@ function expect
           or set result $status
       end
       test $result -ne 0
-    case --to-eq\*
+    case --to-equal
       test "$expected" = "$actual"
+    case --to-not-equal
+      test "$expected" != "$actual"
   end
+
   set result $status
   if [ $result -eq 0 ]
-    spec.log --ok
+    # Return a non-empty string to indicate success.
+    printf "$result"
   else
-    spec.log --fail red \n"Expected" yellow "$expected" \
-                    red \n(echo $condition | tr "-" " " \
-                                           | cut -c 3-) yellow "$actual"
+    # Return error information separated by \t and tested condition.
+    printf "%s\n" $expected \t $condition $actual
   end
   return $result
 end
diff --git a/plugins/fish-spec/list.erase.fish b/plugins/fish-spec/list.erase.fish
index 870f093..729d672 100644
--- a/plugins/fish-spec/list.erase.fish
+++ b/plugins/fish-spec/list.erase.fish
@@ -13,14 +13,18 @@
 #   While items are basically any valid sequence of symbols, lists refer
 #   to any global variable or local variable in the scope of the calling
 #   function by name.
+#
+# AUTHORS
+#   Jorge Bucaran <@bucaran>
 #/
 function -S list.erase
-  # List to erase from is at last index by default.
+  # Assume no items were erased.
+  set -l result 1
+  # At least one list should be at the last index.
   set -l items $argv[1..-2]
   set -l lists $argv[-1]
   if set -l index (contains -i -- --from $argv)
-    # Everything before --from are items to erase and everything
-    # after, lists to erase any found items from.
+    # <items to erase> --from <lists>
     set items $argv[1..(math $index-1)]
     set lists $argv[(math $index+1)..-1]
   end
@@ -28,7 +32,10 @@ function -S list.erase
     for list in $lists
       if set -l index (contains -i -- $item $$list)
         set -e $list[1][$index]
+        # Function succeeds if at least an item is erased.
+        set result 0
       end
     end
   end
+  return $result
 end
diff --git a/plugins/fish-spec/spec.eval.fish b/plugins/fish-spec/spec.eval.fish
index 616153b..8e6ca32 100644
--- a/plugins/fish-spec/spec.eval.fish
+++ b/plugins/fish-spec/spec.eval.fish
@@ -1,98 +1,29 @@
 # NAME
-#   spec.eval - eval a function by name and echo its description field
+#   spec.eval - eval a test function
 #
 # SYNOPSIS
 #   spec.eval <function> [OPTIONS...]
-
-# OPTIONS
-#   <function>
-#     Name / glob of one or more functions to evaluate. By default find all
-#     functions that match the glob and test each. To run a single function,
-#     use the -u --unit option as described below.
-#
-#   [-u --unit]
-#     Evaluate a single function as indicated by <function>.
-#
-#  [-d --depth <depth>]
-#     Used to calculate the increment rate of padding added to test blocks.
-#     A depth of N will prepend N*2 spaces to test descriptions. No padding
-#     is added by default. Use a depth of 0 to NOT output newlines between
-#     each test log output.
-#
-#  [-s --silent]
-#     Do NOT output test descriptions. This option is off by default.
-#
-# DESCRIPTION
-#   Run the specified function. Add a -d --description field to tests in
-#   order to log a message before evaluating the function. Use the depth
-#   option to indicate the indentation factor when logging a message.
 #
-#   The process is split up in these steps:
-#
-#   1. Extract test name.
-#   2. Parse description from function definition if available.
-#   3. Parse options
-#     + Calculate indentation from --depth * $tab.
-#     + Determine newline output.
-#     + Skip output if -s --silent is specified.
+# OPTIONS
+#   See spec.report
 #
-# EXAMPLES
-#   spec.eval "describe_" --depth 0
-#   spec.eval "teardown_"
-#   spec.eval "it_"
-#   spec.eval "my_test" --unit
+# AUTHORS
+#   Bruno Pinto <@pfbruno>
+#   Jorge Bucaran <@bucaran>
 #/
-function spec.eval -d "Eval a function by name and echo its description field."
-  # Parse and print description field of a function.
-  # spec.get.info <function name>
-  function spec.get.info -a name
-    type $name        \
-    | head -n 2       \
-    | tail -n 1       \
-    | cut -d" " -f4-  \
-    | sed "s/^\'//g"  \
-    | sed "s/\'\$//g"
-  end
+import plugins/msg
 
-  set -l default_color white
-  # Keep a copy in case -u --unit option is used.
-  set -l query $argv[1]
-  # Collect all functions that start with $query's key.
-  set -l tests (spec.functions $query)
-  set -l tab      2
-  set -l indent  ""
-  set -l newline \n
-  set -l silent  ""
-
-  for index in (seq (count $argv))
-    switch $argv[$index]
-      case -d --depth
-        set -l depth $argv[(math $index + 1)]
-        if [ $depth -gt 0 ]
-          set indent (printf " %.0s" (seq (math $depth \* $tab)))
-        else
-          set newline ""
-        end
-      case -s --silent
-        set silent $argv[$index]
-      case -u --unit
-        # Evaluate query as a single function instead of a set.
-        set tests $query
-    end
-  end
+function spec.eval
+  set -l result $status
+  set -l test $argv[1]
+  set -e argv[1]
 
-  set -l result 0
-  for test in $tests
-    if [ -z "$silent" ]
-      set -l info (spec.get.info $tests)
-      if [ -n "$info" ]
-        # Do not print empty lines for tests with empty descriptions.
-        set info $newline$indent$info
-      end
-      spec.log --message $default_color "$info"
-    end
-    eval $test
-      or set result 1
+  if functions -q $test
+    # Run the test yielding control to the user defined spec.
+    set -l output (eval $test)
+    set result $status
+    # Display test results.
+    spec.view $test $result $argv -- $output
   end
   return $result
 end
diff --git a/plugins/fish-spec/spec.functions.fish b/plugins/fish-spec/spec.functions.fish
index eecab75..90a12c8 100644
--- a/plugins/fish-spec/spec.functions.fish
+++ b/plugins/fish-spec/spec.functions.fish
@@ -1,16 +1,106 @@
 # NAME
-#   spec.functions - echo functions existing in the global scope that match
-#                    the key glob.
+#   spec.functions - return functions in the global scope that match ^key
+#
 # SYNOPSIS
-#   spec.functions <key>
+#   spec.functions [OPTIONS] <key>
+#
+# OPTIONS
+#   -b --backup <key> <prefix>
+#     Create new backup functions for all functions by <key> with a <prefix>
+#
+#   -r --restore <prefix>
+#     Create new functions without <prefix>.
+#
+#   -q --quiet
+#     Quiet mode. No output. Return 1 if no functions are found.
+#
+#   -e --erase <key>
+#     Erase the matched functions.
 #
 # EXAMPLES
-#   spec.functions "describe_"
-#   spec.functions "before_"
+#   1) spec.functions "describe_"
+#   2) spec.functions -q "before_"
+#
+#   3) spec.functions -be "describe_" "it_" -- bak_
+#      Backup all describe_* and it_* functions to bak_describe_* and
+#      bak_it_* and erases the original describe_* and it_*
+#
+#   4) spec.functions -r bak_
+#      Find all bak_* functions and copies them without the prefix bak_.
+#
+# AUTHORS
+#   Jorge Bucaran <@bucaran>
 #/
-function spec.functions -a key
-  if [ -n "$key" ]
-    # Skip empty strings to avoid fetching all global functions.
-    functions -n | grep \^"$key"
+function spec.functions
+  # Parse custom options
+  set -l backup
+  set -l prefix
+  set -l restore
+  set -l quiet
+  set -l erase
+  set -l keys
+  for index in (seq (count $argv))
+    switch $argv[$index]
+      case -q --quiet
+        set quiet -q
+      # N-switch-fallthrough pattern in fish.
+      case -b\* -r\* -e\*
+        switch $argv[$index]
+          case -b -be -eb --backup
+            set backup -b
+            if set -l separator (contains -i -- "--" $argv[$index..-1])
+              set prefix $argv[(math $separator + 1)]
+            else
+              set prefix $argv[(math $index + 2)]
+            end
+        end
+        switch $argv[$index]
+          case -e -be -eb --erase -re -er
+            set erase -e
+        end
+        switch $argv[$index]
+          case -r -re -er --restore
+            # Using restore takes only one argument, <prefix>
+            set restore -r
+            set prefix $argv[(math $index + 1)]
+        end
+      case \*
+        set keys $keys $argv[$index]
+    end
+  end
+
+  # Skip empty strings to avoid fetching all global functions.
+  if [ -n "$keys" ]
+    if [ -n "$restore" -a -n "$prefix" ]
+      set keys $prefix
+    end
+
+    set -l list
+    for key in $keys
+      set list $list (functions -n | grep \^"$key")
+    end
+
+    if [ -n "$list" ]
+      if [ -n "$erase" -o -n "$prefix" ]
+
+        for item in $list
+          if [ -n "$backup" -a "$prefix" ]
+            functions -c $item $prefix$item
+          end
+          if [ -n "$restore" -a "$prefix" ]
+            # Cut prefix from function and create a new copy.
+            functions -c $item (echo $item | \
+                cut -c (echo $prefix | awk '{ print length + 1 }')-)
+          end
+          if [ -n "$erase" ]
+            functions -e $item
+          end
+        end
+
+      else if [ -z "$quiet" ]
+        printf "%s\n" $list
+      end
+      return 0
+    end
   end
 end
diff --git a/plugins/fish-spec/spec.log.fish b/plugins/fish-spec/spec.log.fish
deleted file mode 100644
index 4535614..0000000
--- a/plugins/fish-spec/spec.log.fish
+++ /dev/null
@@ -1,56 +0,0 @@
-# NAME
-#   spec.log - log a message / test result
-#
-# SYNOPSIS
-#   spec.log -m | --msg/--message
-#            -o | --ok
-#            -f | --fail
-#            [<color> <string>...]
-# OPTIONS
-#   -m --msg --message
-#     Output the message according to the <color> <string>... list.
-#
-#   -o --ok
-#     Echo a . character. Optionally, print a list of <color> <string>...
-#     messages.
-#
-#   -f --fail
-#     Echo a ✘ character. Optionally, print a list of <color> <string>...
-#     messages. Use this feature to indicate the expected value, condition
-#     description and actual value of the failed assertion. For example:
-#
-#       spec.log --fail red "Expected" blue "$value"
-#
-# NOTES
-#   This function does not modify the $status variable.
-#
-#   Some tests may specify multiple success conditions, invoking `expect`
-#   several times per test case. In this case, spec.log will be run once
-#   each per `expect` call.
-#
-#   Notice that a message in the form [<color> <string>...] implies that
-#   colors occupy odd and strings even indices after the first option.
-#/
-function spec.log -d "Log / commit a message or test result."
-  switch $argv[1]
-    case -o --ok
-      set -e argv[1]
-      set argv green . $argv
-    case -f --fail
-      set -e argv[1]
-      set argv red ✘ $argv
-    case -m --msg --message
-      # Default message color.
-      set -e argv[1]
-  end
-
-  if [ (count $argv) -gt 0 ]
-    for i in (seq (count $argv))
-      if [ (math "$i % 2") -eq 0 ]
-        echo -ne $argv[$i](set_color white)
-      else
-        set_color $argv[$i]
-      end
-    end
-  end
-end
diff --git a/plugins/fish-spec/spec.run.fish b/plugins/fish-spec/spec.run.fish
index 6b0333e..ab0c762 100644
--- a/plugins/fish-spec/spec.run.fish
+++ b/plugins/fish-spec/spec.run.fish
@@ -1,16 +1,18 @@
 # NAME
-#   spec.run - run suite of tests
+#   spec.run - run a suite of tests
 #
 # SYNOPSIS
-#   spec.run [-v --verbose]
+#   spec.run [OPTIONS]
+#
+# OPTIONS
+#   -v --verbose
+#     Print full test output.
 #
 # DESCRIPTION
 #   In order to run tests create the test file, import plugins/spec at
 #   before adding any of the functions described above and call spec.run.
 #
 # FUNCTIONS
-#   import plugins/spec
-#
 #   function before_all     Run before any tests are run.
 #   function before_each    Run before each test.
 #   function describe_*     Use to organize different specs.
@@ -18,6 +20,18 @@
 #   function after_each     Run after each test.
 #   function after_all      Run after all tests are finished.
 #
+# NOTES
+#   After each test is evaluated, the function is erased from the scope by
+#   spec.eval to guarantee that subsequent describe blocks will not end up
+#   calling the previous describe's batch of tests.
+#
+#   The fish-spec library is no different from other Oh-My-Fish plugins.
+#   Use `import plugins/fish-spec` at the top of your spec file and call
+#
+#     spec.run $argv
+#
+#   After your suite of tests.
+#
 # EXAMPLES
 #     import plugins/fish-spec
 #     function describe_erase
@@ -36,27 +50,44 @@
 #   Jorge Bucaran <@bucaran>
 #/
 function spec.run
-  set -l result 0 # Optimism
-  set -l output "--silent"
-  if contains -- $argv[1] -v --verbose
-    set output ""
-  end
-  # Run 1 or more topmost describe blocks causing fish to load inmediately
-  # scoped functions, i.e, those inside any invoked describe_ blocks.
-  spec.eval describe_ --depth 0 $output
-  spec.eval before_all $output
-  for test in (spec.functions "it_")
-    spec.eval before_each $output
-
-    # Flunk test if any single test fails, but do not stop the suite.
-    if not spec.eval $test --unit --depth 1 $output
-      set result 1
+  set -l result  0
+  set -l tests  ""
+  set -l describes (spec.functions describe_)
+
+  # Load this suite unique set of tests.
+  for describe in $describes
+    spec.eval $describe --header $argv
+    spec.eval before_all $argv
+
+    set tests (spec.functions it_)
+    set -l failed 0
+
+    for test in $tests
+      spec.eval before_each $argv
+
+      if not spec.eval $test --tab 1 $argv
+        set result 1 # Flunk!
+        set failed (math 1+$failed)
+      end
+
+      spec.eval after_each $argv
     end
+    spec.eval after_all $argv
+
+    if contains -- $argv[1] -v --verbose
+      spec.view --report (count $tests) $failed
+    end
+
+    # Clean up methods after all tests are finished.
+    spec.functions -e it_ before_ after_
+  end
 
-    # Make sure to run after_each even if a test fails.
-    spec.eval after_each $output
+  if [ -z "$describes" -o -z "$tests" ]
+    echo "No tests found."
+    return 1
   end
-  spec.eval after_all $output
 
+  spec.functions -e describe_
+  
   return $result
 end
diff --git a/plugins/fish-spec/spec.view.fish b/plugins/fish-spec/spec.view.fish
new file mode 100644
index 0000000..dc2677f
--- /dev/null
+++ b/plugins/fish-spec/spec.view.fish
@@ -0,0 +1,118 @@
+# NAME
+#   spec.view - print test output
+#
+# SYNOPSIS
+#   spec.view <test> <result> [OPTIONS] -- <output>
+#   spec.view -r --report <test count> <failed tests>
+#
+# OPTIONS
+#   -r --report
+#     Print a passed / failed diagnostics report. Verbose assumed.
+#
+#   -v --verbose
+#     Print test full output.
+#
+#   -h --header
+#
+#   -t --tab
+#     Use to specify the tab indentation of nested tests inside suites.
+#
+# AUTHORS
+#   Jorge Bucaran <@bucaran>
+#/
+function spec.view
+  # Redefine these colors to customize the report.
+  set -l _color_default   @white
+  set -l _color_pass      @springgreen
+  set -l _color_info      @lgray
+  set -l _color_fail      @red
+  set -l _color_fail_info @black:yellow
+  set -l _color_dump      555
+
+  set -l verbose ""
+  if contains -- $argv[1] -r --report
+    set -l total_tests  $argv[2]
+    set -l failed_tests $argv[3]
+
+    set -l passed_tests (math $total_tests - $failed_tests)
+
+    test $passed_tests -gt 0
+      and msg \n $_color_pass "$passed_tests passing"
+
+    test $failed_tests -gt 0
+      and msg $_color_fail "$failed_tests failing"
+    echo # Blank link
+
+    return 0
+  end
+
+  # Use test name or -d description field if available.
+  set -l info (type $argv[1] \
+    | head -n 2       \
+    | tail -n 1       \
+    | cut -d" " -f4-  \
+    | sed "s/^\'//g"  \
+    | sed "s/\'\$//g")
+
+  if [ -z "$info" ]
+    set info (echo $argv[1] | tr "_" " ")
+  end
+
+  set -l result $argv[2]
+  set -l output
+
+  # Parse format options.
+  set -l tab      1
+  set -l header  ""
+  if set -q argv[3]
+    for index in (seq 3 (count $argv))
+      switch "$argv[$index]"
+        case -v --verbose
+          set verbose -v
+        case -h --header
+          set header $info
+        case -t --tab
+          set tab $argv[(math $index + 1)]
+        case --
+          if [ $index -lt (count $argv) ]
+            set output $argv[(math $index + 1)..-1]
+          end
+          break
+      end
+    end
+  end
+
+  # Print a header if available.
+  if [ -n "$header" -a "$verbose" ]
+    msg $_color_default _$header\_
+  end
+
+  # Process test functions with output. Typically it_ tests using `expect`.
+  if [ -n "$output" ]
+    set tab (printf " %.0s" (seq $tab))
+    # Process succesful tests.
+    if [ $result -eq 0 ]
+      if [ -n "$verbose" ]
+        msg $tab $_color_pass ✔ $_color_info $info
+      else
+        echo -n (set_color 00FF7F).
+      end
+    else
+      msg $tab $_color_fail ✖ $_color_fail_info $info
+
+      # Error dump parser, split output by \t.
+      set -l index (contains -i -- \t $output)
+
+      # Transform condition string to TitleCase
+      set condition (echo $output[(math $index+1)] \
+        | tr "-" " " \
+        | cut -c 3-  \
+        | awk '{for(j=1;j<=NF;j++){ $j=toupper(substr($j,1,1)) substr($j,2) }}1')
+
+      msg $tab __Expected__
+      printf (set_color $_color_dump)"$tab  %s\n" $output[1..(math $index-1)]
+      msg $tab $condition
+      printf (set_color $_color_dump)"$tab  %s\n" $output[(math $index+2)..-1]
+    end
+  end
+end
diff --git a/plugins/fish-spec/spec/expect.to_be_false.spec.fish b/plugins/fish-spec/spec/expect.to_be_false.spec.fish
index a53942a..5d5681a 100644
--- a/plugins/fish-spec/spec/expect.to_be_false.spec.fish
+++ b/plugins/fish-spec/spec/expect.to_be_false.spec.fish
@@ -1,16 +1,16 @@
 import plugins/fish-spec
 
-function describe_to_be_false -d 'expect --to-be-false'
+function describe_expect_to_be_false
   function before_each
     set -e result
   end
 
-  function it_returns_1_when_evaluated_value_returns_0
+  function it_returns_1_when_evaluated_value_is_0
     echo (expect true --to-be-false; set result $status) >/dev/null
     expect $result --to-equal 1
   end
 
-  function it_returns_0_when_evaluated_value_returns_1
+  function it_returns_0_when_evaluated_value_is_1
     echo (expect false --to-be-false; set result $status) >/dev/null
     expect $result --to-equal 0
   end
diff --git a/plugins/fish-spec/spec/expect.to_be_true.spec.fish b/plugins/fish-spec/spec/expect.to_be_true.spec.fish
index 083b9ee..7096062 100644
--- a/plugins/fish-spec/spec/expect.to_be_true.spec.fish
+++ b/plugins/fish-spec/spec/expect.to_be_true.spec.fish
@@ -1,6 +1,6 @@
 import plugins/fish-spec
 
-function describe_to_be_true -d 'expect --to-be-true'
+function describe_expect_to_be_true
   function before_each
     set -e result
   end
diff --git a/plugins/fish-spec/spec/expect.to_contain.spec.fish b/plugins/fish-spec/spec/expect.to_contain.spec.fish
index 7907178..e81b078 100644
--- a/plugins/fish-spec/spec/expect.to_contain.spec.fish
+++ b/plugins/fish-spec/spec/expect.to_contain.spec.fish
@@ -1,60 +1,60 @@
 import plugins/fish-spec
 
-function describe_to_contain -d 'expect --to-contain'
+function describe_expect_to_contain
   function before_each
     set -e result
   end
 
-  function it_returns_0_when_arrays_are_the_same
+  function it_returns_0_when_lists_are_the_same
     set -l array 1 2
 
     echo (expect $array --to-contain $array; set result $status) >/dev/null
     expect $result --to-equal 0
   end
 
-  function it_returns_1_when_arrays_are_different
+  function it_returns_1_when_lists_are_different
     set -l array 1 2
 
     echo (expect $array --to-contain 8 9; set result $status) >/dev/null
     expect $result --to-equal 1
   end
 
-  function it_returns_0_when_arrays_have_the_same_elements_but_in_different_order
+  function it_returns_0_when_lists_have_the_same_item_but_in_different_order
     set -l array 1 2
 
     echo (expect $array --to-contain 2 1; set result $status) >/dev/null
     expect $result --to-equal 0
   end
 
-  function it_returns_0_when_expected_array_contains_the_element
+  function it_returns_0_when_expected_list_contains_the_item
     set -l array 1 2
 
     echo (expect $array --to-contain 1; set result $status) >/dev/null
     expect $result --to-equal 0
   end
 
-  function it_returns_1_when_expected_array_does_not_contain_the_element
+  function it_returns_1_when_expected_list_does_not_contain_the_item
     set -l array 1 2
 
     echo (expect $array --to-contain 9; set result $status) >/dev/null
     expect $result --to-equal 1
   end
 
-  function it_returns_0_when_expected_array_contains_all_elements
+  function it_returns_0_when_expected_list_contains_all_items
     set -l array 1 2 3
 
     echo (expect $array --to-contain 1 2; set result $status) >/dev/null
     expect $result --to-equal 0
   end
 
-  function it_returns_1_when_expected_array_does_not_contain_all_elements
+  function it_returns_1_when_expected_list_does_not_contain_all_items
     set -l array 1 2 3
 
     echo (expect $array --to-contain 1 2 9; set result $status) >/dev/null
     expect $result --to-equal 1
   end
 
-  function it_returns_1_when_expected_array_contains_less_elements
+  function it_returns_1_when_expected_list_contains_less_items
     set -l array 1 2
 
     echo (expect $array --to-contain 1 2 9; set result $status) >/dev/null
diff --git a/plugins/fish-spec/spec/expect.to_equal.spec.fish b/plugins/fish-spec/spec/expect.to_equal.spec.fish
index 70c8b44..843b710 100644
--- a/plugins/fish-spec/spec/expect.to_equal.spec.fish
+++ b/plugins/fish-spec/spec/expect.to_equal.spec.fish
@@ -1,6 +1,6 @@
 import plugins/fish-spec
 
-function describe_to_equal -d 'expect --to-equal'
+function describe_expect_to_equal
   function before_each
     set -e result
   end
@@ -19,14 +19,14 @@ function describe_to_equal -d 'expect --to-equal'
     expect $result --to-equal 1
   end
 
-  function it_returns_0_when_array_elements_are_in_the_same_order
+  function it_returns_0_when_list_items_are_in_the_same_order
     set -l array 1 2
 
     echo (expect $array --to-equal 1 2; set result $status) >/dev/null
     expect $result --to-equal 0
   end
 
-  function it_returns_1_when_array_elements_are_in_different_order
+  function it_returns_1_when_list_items_are_in_different_order
     set -l array 1 2
 
     echo (expect $array --to-equal 2 1; set result $status) >/dev/null
diff --git a/plugins/fish-spec/spec/expect.to_not_contain.spec.fish b/plugins/fish-spec/spec/expect.to_not_contain.spec.fish
index debabe8..2fe1c4b 100644
--- a/plugins/fish-spec/spec/expect.to_not_contain.spec.fish
+++ b/plugins/fish-spec/spec/expect.to_not_contain.spec.fish
@@ -1,63 +1,63 @@
 import plugins/fish-spec
 
-function describe_to_not_contain -d 'expect --to-not-contain'
+function describe_expect_to_not_contain
   function before_each
     set -e result
   end
 
-  function it_returns_1_when_arrays_are_the_same
-    set -l array 1 2
+  function it_returns_1_when_lists_are_the_same
+    set -l list 1 2
 
-    echo (expect $array --to-not-contain $array; set result $status) >/dev/null
+    echo (expect $list --to-not-contain $list; set result $status) >/dev/null
     expect $result --to-equal 1
   end
 
-  function it_returns_0_when_arrays_are_different
-    set -l array 1 2
+  function it_returns_0_when_lists_are_different
+    set -l list 1 2
 
-    echo (expect $array --to-not-contain 8 9; set result $status) >/dev/null
+    echo (expect $list --to-not-contain 8 9; set result $status) >/dev/null
     expect $result --to-equal 0
   end
 
-  function it_returns_1_when_arrays_have_the_same_elements_but_in_different_order
-    set -l array 1 2
+  function it_returns_1_when_lists_have_the_same_items_but_in_different_order
+    set -l list 1 2
 
-    echo (expect $array --to-not-contain 2 1; set result $status) >/dev/null
+    echo (expect $list --to-not-contain 2 1; set result $status) >/dev/null
     expect $result --to-equal 1
   end
 
-  function it_returns_1_when_expected_array_contains_the_element
-    set -l array 1 2
+  function it_returns_1_when_expected_list_contains_an_item
+    set -l list 1 2
 
-    echo (expect $array --to-not-contain 1; set result $status) >/dev/null
+    echo (expect $list --to-not-contain 1; set result $status) >/dev/null
     expect $result --to-equal 1
   end
 
-  function it_returns_0_when_expected_array_does_not_contain_the_element
-    set -l array 1 2
+  function it_returns_0_when_expected_list_does_not_contain_an_item
+    set -l list 1 2
 
-    echo (expect $array --to-not-contain 9; set result $status) >/dev/null
+    echo (expect $list --to-not-contain 9; set result $status) >/dev/null
     expect $result --to-equal 0
   end
 
-  function it_returns_1_when_expected_array_contains_all_elements
-    set -l array 1 2 3
+  function it_returns_1_when_expected_list_contains_all_items
+    set -l list 1 2 3
 
-    echo (expect $array --to-not-contain 1 2; set result $status) >/dev/null
+    echo (expect $list --to-not-contain 1 2; set result $status) >/dev/null
     expect $result --to-equal 1
   end
 
-  function it_returns_0_when_expected_array_does_not_contain_all_elements
-    set -l array 1 2 3
+  function it_returns_0_when_expected_array_does_not_contain_any_items
+    set -l list 1 2 3
 
-    echo (expect $array --to-not-contain 1 2 9; set result $status) >/dev/null
+    echo (expect $list --to-not-contain 1 2 9; set result $status) >/dev/null
     expect $result --to-equal 0
   end
 
-  function it_returns_0_when_expected_array_contains_less_elements
-    set -l array 1 2
+  function it_returns_0_when_expected_array_contains_less_items
+    set -l list 1 2
 
-    echo (expect $array --to-not-contain 1 2 9; set result $status)
+    echo (expect $list --to-not-contain 1 2 9; set result $status)
     expect $result --to-equal 0
   end
 end
diff --git a/plugins/fish-spec/spec/list.erase.spec.fish b/plugins/fish-spec/spec/list.erase.spec.fish
index af6f180..5924dbe 100644
--- a/plugins/fish-spec/spec/list.erase.spec.fish
+++ b/plugins/fish-spec/spec/list.erase.spec.fish
@@ -1,56 +1,71 @@
 import plugins/fish-spec
 
-function describe_list_erase -d "Testing Oh-My-Fish `list.erase` function..."
+function describe_list.erase
   function before_each
     set -g nums_until_10 1 2 3 4 5 6 7 8 9 10
     set -g odds_until_10 1 3 5 7 9
   end
 
-  function it_erases_one_element -d "It should erase an element from a list."
+  function it_erases_one_element
     list.erase 1 nums_until_10
     expect $nums_until_10 --to-not-contain 1
   end
 
-  function it_erases_one_element_without_from_option \
-    -d "It should erase an element with --from option."
+  function it_erases_one_element_without_from_option
     list.erase 1 --from nums_until_10
     expect $nums_until_10 --to-not-contain 1
   end
 
-  function it_erases_one_element_from_multiple_lists \
-    -d "It should erase an element from multiple lists."
+  function it_erases_one_element_from_multiple_lists
     list.erase 1 --from nums_until_10 odds_until_10
     expect $nums_until_10 --to-not-contain 1
       and expect $odds_until_10 --to-not-contain 1
   end
 
-  function it_erases_one_element_from_multiple_lists_when_only_one_has_the_element \
-    -d "It should erase an element from multiple lists when only one has the element."
+  function it_erases_one_element_from_multiple_lists_when_only_one_has_the_element
     list.erase 2 --from nums_until_10 odds_until_10
     expect $nums_until_10 --to-not-contain 2
   end
 
-  function it_erases_multiple_elements \
-    -d "It should erase multiple elements."
+  function it_erases_multiple_elements
     list.erase 1 2 nums_until_10
     expect $nums_until_10 --to-not-contain 1
       and expect $nums_until_10 --to-not-contain 2
   end
 
-  function it_erases_multiple_elements_with_from_syntax \
-    -d "It should erase multiple elements with --from option."
+  function it_erases_multiple_elements_with_from_syntax
     list.erase 1 2 --from nums_until_10
     expect $nums_until_10 --to-not-contain 1
       and expect $nums_until_10 --to-not-contain 2
   end
 
-  function it_erases_multiple_elements_from_multiple_lists \
-    -d "It should erase multiple elements from multiple lists."
+  function it_erases_multiple_elements_from_multiple_lists
     list.erase 1 2 --from nums_until_10 odds_until_10
     expect $nums_until_10 --to-not-contain 1
       and expect $nums_until_10 --to-not-contain 2
         and expect $odds_until_10 --to-not-contain 1
   end
+
+  function it_returns_0_if_any_items_are_erased
+    list.erase 10 --from nums_until_10
+    expect $status --to-equal 0
+  end
+
+  function it_returns_1_if_no_items_are_erased
+    list.erase 100 200 300 --from nums_until_10
+    expect $status --to-equal 1
+  end
+
+  function it_returns_1_if_no_items_are_erased_from_any_lists
+    list.erase 100 200 300 --from nums_until_10 odds_until_10
+    expect $status --to-equal 1
+  end
+
+  function it_returns_0_if_items_are_erased_from_some_but_not_all_lists
+    list.erase 1 2 3 --from nums_until_10 odds_until_10
+    expect $status --to-equal 0
+  end
+
 end
 
 spec.run $argv
diff --git a/plugins/fish-spec/spec/spec.spec.fish b/plugins/fish-spec/spec/spec.spec.fish
new file mode 100644
index 0000000..f1116e6
--- /dev/null
+++ b/plugins/fish-spec/spec/spec.spec.fish
@@ -0,0 +1,130 @@
+import plugins/fish-spec
+
+function describe_fish-spec -d "Fish-Spec"
+  function it_has_an_output_if_suite_is_blank
+    set -l suite "
+        import plugins/fish-spec
+        spec.run
+      "
+    expect (run_nested_suite $suite) --to-equal "No tests found."
+  end
+
+  function it_has_an_output_if_there_are_no_tests
+    set -l suite "
+        import plugins/fish-spec
+        function describe_blank_suite
+        end
+        spec.run
+      "
+    expect (run_nested_suite $suite) --to-equal "No tests found."
+  end
+
+  function it_runs_all_describe_blocks
+    set -l describe_one     0 1 0
+    set -l describe_two     1 0 0
+    set -l describe_expects 1 1 0
+    set -l suites
+
+    for return_code_index in (seq (count $describe_one))
+      set suites $suites "
+          import plugins/fish-spec
+          function describe_blank_suite
+            function it_returns_0_1_0_1_in_that_order
+              return $describe_one[$return_code_index]
+            end
+          end
+          function describe_another_blank_suite
+            function it_returns_1_0_0_1_in_that_order
+              return $describe_two[$return_code_index]
+            end
+          end
+          spec.run
+        "
+    end
+    for index in (seq (count $suites))
+      run_nested_suite $suites[$index]
+      expect $status --to-equal $describe_expects[$index]
+        or return 1
+    end
+  end
+
+  function it_runs_all_it_blocks
+    set -l suite "
+        import plugins/fish-spec
+
+        function describe_suite
+          function it_is_executed
+            return 0
+          end
+
+          function it_is_also_executed
+            return 0
+          end
+
+          function it_is_also_executed
+            return 1
+          end
+        end
+
+        spec.run
+      "
+    run_nested_suite $suite
+    expect $status --to-equal 1
+  end
+
+  function it_adds_a_dot_for_a_successful_expectation
+    set -l suite "
+        import plugins/fish-spec
+
+        function describe_suite
+          function it_is_executed
+            expect 'success' --to-equal 'success'
+          end
+        end
+
+        spec.run
+      "
+    set -l output (run_nested_suite $suite)
+    set -l dot    (echo -ne (set_color 00FF7F).)
+    expect "$output" --to-equal $dot
+  end
+
+  function it_adds_a_dot_for_each_successful_test
+    set -l suite "
+        import plugins/fish-spec
+
+        function describe_suite
+          function it_is_executed
+            expect 'success' --to-equal 'success'
+          end
+          function it_is_executed_again
+            expect 'success' --to-equal 'success'
+          end
+        end
+
+        spec.run
+      "
+    set -l output (run_nested_suite $suite)
+    set -l dot    (echo -ne (set_color 00FF7F).)
+    expect "$output" --to-equal $dot$dot
+  end
+end
+
+function run_nested_suite -a suite
+  # Erase and backup original suite functions to avoid an infinite loop.
+  spec.functions -eb it_ describe_ -- "backup."
+
+  # Run nested suite
+  eval $suite
+  set -l result $status
+
+  # Erase functions created by the nested suite
+  spec.functions -e it_ describe_
+
+  # Restore original suite functions
+  spec.functions -re backup.
+
+  return $result
+end
+
+# spec.run $argv
diff --git a/script/run-tests.fish b/script/run-tests.fish
index f3b43e0..39eab3f 100755
--- a/script/run-tests.fish
+++ b/script/run-tests.fish
@@ -1,5 +1,7 @@
 #!/usr/bin/env fish
-
-for test in (find * -type f -print | grep 'spec.fish')
-  fish $test
+set -l result 0
+for test in (find * -type f -print | grep "spec.fish")
+  fish $test $argv
+    or set result 1
 end
+exit $result
diff --git a/spec/oh-my-fish.spec.fish b/spec/oh-my-fish.spec.fish
index 00c0e8a..cdde09d 100755
--- a/spec/oh-my-fish.spec.fish
+++ b/spec/oh-my-fish.spec.fish
@@ -13,25 +13,19 @@ function describe_oh_my_fish -d "Oh-My-Fish test spec..."
     set fish_function_path  $fish_function_path_bak
   end
 
-  function it_has_a_default_custom_directory \
-    -d "It should have a default custom directory"
-
+  function it_has_a_default_custom_directory
     set -e fish_custom
     load_oh_my_fish
     expect $fish_custom --to-eq "$HOME/.oh-my-fish/custom"
   end
 
-  function it_allows_the_custom_folder_location_to_be_customized \
-    -d "It should allow modifying the location of the custom directory"
-
+  function it_allows_the_custom_folder_location_to_be_customized
     set -g fish_custom /tmp
     load_oh_my_fish
     expect $fish_custom --to-eq '/tmp'
   end
 
-  function it_loads_all_custom_files \
-    -d "It should load all custom files"
-
+  function it_loads_all_custom_files
     set -g fish_custom /tmp
     echo 'set -gx TEST_LOAD_CUSTOM_FILE file_loaded' > $fish_custom/test.load
 
@@ -39,18 +33,14 @@ function describe_oh_my_fish -d "Oh-My-Fish test spec..."
     expect $TEST_LOAD_CUSTOM_FILE --to-eq 'file_loaded'
   end
 
-  function it_loads_all_oh_my_fish_functions \
-    -d "It should load all default functions"
-
+  function it_loads_all_oh_my_fish_functions
     list.erase "$fish_path/functions/" --from fish_function_path
 
     load_oh_my_fish
     expect $fish_function_path --to-contain $fish_path/functions/
   end
 
-  function it_loads_all_selected_plugins \
-    -d "It should load all user selected plugins"
-
+  function it_loads_all_selected_plugins
     list.erase "$fish_path/plugins/bak" \
                "$fish_path/plugins/z" --from fish_function_path
 
@@ -60,9 +50,7 @@ function describe_oh_my_fish -d "Oh-My-Fish test spec..."
     expect $fish_function_path --to-contain $fish_path/plugins/z
   end
 
-  function it_loads_the_selected_theme \
-    -d "It should load the user selected theme"
-
+  function it_loads_the_selected_theme
     list.erase "$fish_path/themes/l" --from fish_function_path
 
     set fish_theme l
@@ -70,9 +58,7 @@ function describe_oh_my_fish -d "Oh-My-Fish test spec..."
     expect $fish_function_path --to-contain $fish_path/themes/l
   end
 
-  function it_reloads_with_status_of_0 \
-    -d "It should reload the framework with \$status of 0"
-
+  function it_reloads_with_status_of_0
     load_oh_my_fish
     expect $status --to-equal 0
   end
@@ -82,5 +68,4 @@ function load_oh_my_fish
   . $fish_path/oh-my-fish.fish
 end
 
-# Begin test suite ❯❯❯
 spec.run $argv