rewrite tests with jessie

README.md

@@ -137,8 +137,8 @@ greet("Steve", 1)
 
 ### Running the test suite
 
-    $ coffee tests.coffee
-    37 of 37 tests passed
+    npm install
+    npm test
 
 
 [1]: http://docs.python.org/library/stdtypes.html#str.format

package.json

@@ -1,11 +1,21 @@
 {
-  "name"        : "string-format",
-  "description" : "Adds a `format` method to `String.prototype`. Inspired by Python's `str.format()`.",
-  "keywords"    : ["string", "formatting", "language", "util"],
-  "homepage"    : "https://github.com/davidchambers/string-format",
-  "bugs"        : "https://github.com/davidchambers/string-format/issues",
-  "repository"  : {"type": "git", "url": "https://github.com/davidchambers/string-format"},
-  "author"      : "David Chambers <[email protected]>",
-  "main"        : "string-format.js",
-  "version"     : "0.1.0"
+  "name": "string-format",
+  "description": "Adds a `format` method to `String.prototype`. Inspired by Python's `str.format()`.",
+  "keywords": ["string", "formatting", "language", "util"],
+  "homepage": "https://github.com/davidchambers/string-format",
+  "bugs": "https://github.com/davidchambers/string-format/issues",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/davidchambers/string-format"
+  },
+  "author": "David Chambers <[email protected]>",
+  "main": "string-format.js",
+  "version": "0.1.0",
+  "devDependencies": {
+    "coffee-script": "1.2.x",
+    "jessie": "0.4.x"
+  },
+  "scripts": {
+    "test": "node_modules/jessie/bin/jessie spec"
+  }
 }

spec/spec_helper.js

@@ -0,0 +1,2 @@
+require('coffee-script')
+require('jessie').sugar()

spec/stringformat_spec.coffee

@@ -0,0 +1,92 @@
+require '../string-format'
+
+describe 'String::format', ->
+
+  it 'interpolates positional arguments', ->
+    '{0}, you have {1} unread message{2}'.format('Holly', 2, 's')
+    .should_be 'Holly, you have 2 unread messages'
+
+  it 'strips unmatched placeholders', ->
+    '{0}, you have {1} unread message{2}'.format('Steve', 1)
+    .should_be 'Steve, you have 1 unread message'
+
+  it 'allows indexes to be omitted if they are entirely sequential', ->
+    '{}, you have {} unread message{}'.format('Steve', 1)
+    .should_be 'Steve, you have 1 unread message'
+
+  it 'replaces all occurrences of a placeholder', ->
+    'the meaning of life is {0} ({1} x {2} is also {0})'.format(42, 6, 7)
+    .should_be 'the meaning of life is 42 (6 x 7 is also 42)'
+
+  it 'creates a reusable template function when invoked with no arguments', ->
+    explicit = '{0}, you have {1} unread message{2}'.format()
+    implicit = '{}, you have {} unread message{}'.format()
+    explicit('Holly', 2, 's').should_be 'Holly, you have 2 unread messages'
+    implicit('Holly', 2, 's').should_be 'Holly, you have 2 unread messages'
+    explicit('Steve', 1).should_be 'Steve, you have 1 unread message'
+    implicit('Steve', 1).should_be 'Steve, you have 1 unread message'
+
+  it 'does not allow explicit and implicit numbering to be intermingled', ->
+    expect(-> '{} {0}'.format 'foo', 'bar')
+    .toThrow 'cannot switch from implicit to explicit numbering'
+    expect(-> '{1} {}'.format 'foo', 'bar')
+    .toThrow 'cannot switch from explicit to implicit numbering'
+    expect(-> '{1} {}'.format() 'foo', 'bar')
+    .toThrow 'cannot switch from explicit to implicit numbering'
+
+  it 'treats "{{" and "}}" as "{" and "}"', ->
+    '{{ {}: "{}" }}'.format('foo', 'bar').should_be '{ foo: "bar" }'
+
+  it 'supports property access via dot notation', ->
+    bobby = first_name: 'Bobby', last_name: 'Fischer'
+    garry = first_name: 'Garry', last_name: 'Kasparov'
+    '{0.first_name} {0.last_name} vs. {1.first_name} {1.last_name}'.format(bobby, garry)
+    .should_be 'Bobby Fischer vs. Garry Kasparov'
+
+  it 'accepts a shorthand for properties of the first positional argument', ->
+    bobby = first_name: 'Bobby', last_name: 'Fischer'
+    '{first_name} {last_name}'.format(bobby).should_be 'Bobby Fischer'
+
+  String::format.transformers.s = -> 's' unless +this is 1
+
+  it 'applies transformers to explicit positional arguments', ->
+    text = '{0}, you have {1} unread message{1!s}'
+    text.format('Steve', 1).should_be 'Steve, you have 1 unread message'
+    text.format('Holly', 2).should_be 'Holly, you have 2 unread messages'
+
+  it 'applies transformers to implicit positional arguments', ->
+    text = 'The Cure{!s}, The Door{!s}, The Smith{!s}'
+    text.format(1, 2, 3).should_be 'The Cure, The Doors, The Smiths'
+
+  it 'applies transformers to properties of explicit positional arguments', ->
+    text = '<a href="/inbox">view message{0.length!s}</a>'
+    text.format(new Array 1).should_be '<a href="/inbox">view message</a>'
+    text.format(new Array 2).should_be '<a href="/inbox">view messages</a>'
+
+  it 'applies transformers to properties of implicit positional arguments', ->
+    text = '<a href="/inbox">view message{length!s}</a>'
+    text.format(new Array 1).should_be '<a href="/inbox">view message</a>'
+    text.format(new Array 2).should_be '<a href="/inbox">view messages</a>'
+
+  it "passes applicable tests from Python's test suite", ->
+    ''.format(null).should_be ''
+    'abc'.format(null).should_be 'abc'
+    '{0}'.format('abc').should_be 'abc'
+    'X{0}'.format('abc').should_be 'Xabc'
+    '{0}X'.format('abc').should_be 'abcX'
+    'X{0}Y'.format('abc').should_be 'XabcY'
+    '{1}'.format(1, 'abc').should_be 'abc'
+    'X{1}'.format(1, 'abc').should_be 'Xabc'
+    '{1}X'.format(1, 'abc').should_be 'abcX'
+    'X{1}Y'.format(1, 'abc').should_be 'XabcY'
+    '{0}'.format(-15).should_be '-15'
+    '{0}{1}'.format(-15, 'abc').should_be '-15abc'
+    '{0}X{1}'.format(-15, 'abc').should_be '-15Xabc'
+    '{{'.format(null).should_be '{'
+    '}}'.format(null).should_be '}'
+    '{{}}'.format(null).should_be '{}'
+    '{{x}}'.format(null).should_be '{x}'
+    '{{{0}}}'.format(123).should_be '{123}'
+    '{{{{0}}}}'.format(null).should_be '{{0}}'
+    '}}{{'.format(null).should_be '}{'
+    '}}x{{'.format(null).should_be '}x{'