move meta and fields to yaml

README.md

@@ -1,28 +1,24 @@
-# Choose a License Web Site [![Build Status](https://travis-ci.org/github/choosealicense.com.png?branch=gh-pages)](https://travis-ci.org/github/choosealicense.com)
+# Choosealicense.com
+
+[![Build Status](https://travis-ci.org/github/choosealicense.com.png?branch=gh-pages)](https://travis-ci.org/github/choosealicense.com)
 
 Like a Choose Your Own Adventure site, but only much less interesting.
 
-# Intro
+## Intro
 
-A lot of repositories on GitHub.com don't have a license. GitHub provides
+A lot of repositories on GitHub.com don't have a license. GitHub provides a license chooser, but if you don't know anything about licenses, how are you supposed to make an informed decision?
-a license chooser, but if you don't know anything about licenses, how are you
-supposed to make an informed decision?
 
-[ChooseALicense.com](http://www.choosealicense.com "Choose A Licence website") is designed to help people make an informed decision about
+[ChooseALicense.com](http://www.choosealicense.com "Choose A Licence website") is designed to help people make an informed decision about licenses.
-licenses.
 
-# Immediate Goals
+## Immediate Goals
 
 * Non-partisan. Our goal is to help you find a license that meets *your* goals.
 * Well designed, but that goes without saying.
 * The homepage should have just enough to help 99% of folks make a decision.
-* For the 1%, the site will contain a list of licenses common to specific
+* For the 1%, the site will contain a list of licenses common to specific communities and situations.
-communities and situations.
+* Not comprehensive. Seems like an odd goal, but there are a bajillion licenses out there. We're going to have to filter that down to a small list of those that matter.
-* Not comprehensive. Seems like an odd goal, but there are a bajillion
-licenses out there. We're going to have to filter that down to a
-small list of those that matter.
 
-# Run It On Your Machine
+## Run It On Your Machine
 
 ```bash
 git clone https://github.com/github/choosealicense.com.git
@@ -32,48 +28,80 @@ script/server
 ```
 Open `http://localhost:4000` in your favorite browser.
 
-# Adding a license
+## Adding a license
 
-The text of the license should be wrapped to a 78 character width.
+Licenses sit in the `/_licenses` folder. The text of the license should be wrapped to a 78 character width. Each license has YAML front matter describing the license's properties. The body of the file should be the text of the license in plain text. The available metadata fields are:
 
-Licenses sit in the `/licenses` folder. Each license has YAML front matter
+### YAML front matter
-describing the license's properties. The body of the file should be the text
-of the license in plain text. The available metadata fields are:
 
-* `title` - The name of the license
+#### Required fields
-* `layout` - This should be `license`
-* `permalink` - The absolute URL to the license, beginning with `/licenses/`
-* `source` - URL to the license source text
-* `note` - The note field in the sidebar (optional)
-* `how` - How to use the license, also in the sidebar
-* `required`, `permitted`, `forbidden` - bulleted list of rules applicable to the license (see below)
-* `filename` - The filename to be created on GitHub.com when a repository is initialized with this license.
 
-The licenses on choosealicense.com are regularly imported to GitHub.com to be
+* `title` - The SPDX-compliant, human-readable license name
-used as the list of licenses available when creating a repository. When we
+* `source` - The URL to the license source text
-create a repository, we will replace certain strings in the license with
+* `description` - A human-readable description of the license
-variables from the repository. These can be used to create accurate copyright
+* `how` - Instructions on how to implement the license
-notices. The available variables are:
+* `required` - Bulleted list of required rules
+* `permitted` - Bulleted list of permitted rules
+* `forbidden` - Bulleted list of forbidden rules
 
-* `[fullname]` - The full name or username of the repository owner
+#### Optional fields
-* `[login]` - The repository owner's username
-* `[email]` - The repository owner's primary email address
-* `[project]` - The repository name
-* `[description]` - The description of the repository
-* `[year]` - The current year
 
-# Rules
+* `note` - Additional information about the licenses
+* `using` - A list of notable projects using the license in the form of `project_name: "url"`
+* `hidden` - Whether the license is hidden from the license list (defaults to false)
+* `redirect_from` - Relative path(s) to redirect to the license from
+* `featured` - Whether the license should be featured on the main page (defaults to false)
+* `nickname` - A shorter, human-readable license name where the SPDX license name is long
+* `variant` - Whether the license is a variant of a family of licenses (e.g., GPL)
+* `category` - If part of a license family, the name of the license family (e.g., `GPL`)
+* `tab-slug` - If part of a license family, a license slug containing only `a-z`, `0-9`, and `_` characters
 
-Rules (the license's properties) are stored as a bulleted list within the
+### Auto-populated fields
-licenses YAML front matter. A full list of rules can be found in `_data/rules.yml`.
-Each rule has a name e.g., `include-copyright`, a human-readable label, e.g.,
-`Copyright inclusion`, and a description `Include the original copyright with the code`.
-To add a new rule, simply add it to `_data/rules.yml` and reference it in the
-appropriate license.
 
-# License
+The licenses on choosealicense.com are regularly imported to GitHub.com to be used as the list of licenses available when creating a repository. When we create a repository, we will replace certain strings in the license with variables from the repository. These can be used to create accurate copyright notices. The available variables are:
 
-The content of this project itself is licensed under the
+#### Fields
-[Creative Commons Attribution 3.0 license](http://creativecommons.org/licenses/by/3.0/us/deed.en_US),
+
-and the underlying source code used to format and display that content
+* `fullname` - The full name or username of the repository owner
-is licensed under the [MIT license](http://opensource.org/licenses/mit-license.php).
+* `login` - The repository owner's username
+* `email` - The repository owner's primary email address
+* `project` - The repository name
+* `description` - The description of the repository
+* `year` - The current year
+
+## License properties
+
+The license properties (rules) are stored as a bulleted list within the licenses YAML front matter. Each rule has a name e.g., `include-copyright`, a human-readable label, e.g., `Copyright inclusion`, and a description `Include the original copyright with the code`. To add a new rule, simply add it to `_data/rules.yml` and reference it in the appropriate license.
+
+### Rules
+
+#### Required
+
+* `include-copyright` - Include a copy of the license and copyright notice with the code.
+* `document-changes` - Indicate significant changes made to the code.
+* `disclose-source` - Source code must be made available when distributing the software. In the case of LGPL and OSL 3.0, the source for the library (and not the entire program) must be made available.
+* `network-use-disclose` - Users who interact with the software via network are given the right to receive a copy of the corresponding source code.
+* `library-usage` - The library may be used within a non-open-source application.
+* `rename` - You must change the name of the software if you modify it.
+
+#### Permitted
+
+* `commercial-use` - This software and derivatives may be used for commercial purposes.
+* `modifications` - This software may be modified.
+* `distribution` - You may distribute this software.
+* `sublicense` - You may grant a sublicense to modify and distribute this software to third parties not included in the license.
+* `private-use` - You may use and modify the software without distributing it.
+* `patent-grant` - This license provides an express grant of patent rights from the contributor to the recipient.
+
+#### Forbidden
+
+* `trademark-use` - While this may be implicitly true of all licenses, this license explicitly states that you may NOT use the names, logos, or trademarks of contributors.
+* `no-liability` - Software is provided without warranty and the software author/license owner cannot be held liable for damages.
+* `no-sublicense` - You may not grant a sublicense to modify and distribute this software to third parties not included in the license.
+* `modifications` - This software may not be modified.
+* `distribution` - You may not distribute this software.
+* `sublicense` - You may not grant a sublicense to modify and distribute this software to third parties not included in the license.
+
+## License
+
+The content of this project itself is licensed under the [Creative Commons Attribution 3.0 license](http://creativecommons.org/licenses/by/3.0/us/deed.en_US), and the underlying source code used to format and display that content is licensed under the [MIT license](http://opensource.org/licenses/mit-license.php).

_data/fields.yml

@@ -0,0 +1,23 @@
+# The licenses on choosealicense.com are regularly imported to GitHub.com to
+# be used as the list of licenses available when creating a repository. When
+# we create a repository, we will replace certain strings in the license with
+# variables from the repository. These can be used to create accurate copyright
+# notices. The available variables are:
+
+- name: fullname
+  description: The full name or username of the repository owner
+
+- name: login
+  description: The repository owner's username
+
+- name: email
+  description: The repository owner's primary email address
+
+- name: project
+  description: The repository name
+
+- name: description
+  description: The description of the repository
+
+- name: year
+  description: The current year

_data/meta.yml

@@ -0,0 +1,68 @@
+# Each license has YAML front matter describing the license's properties.
+# The available fields are:
+
+- name: title
+  description: The SPDX-compliant, human-readable license name
+  required: true
+
+- name: source
+  description: The URL to the license source text
+  required: true
+
+- name: description
+  description: A human-readable description of the license
+  required: true
+
+- name: how
+  description: Instructions on how to implement the license
+  required: true
+
+- name: required
+  description: Bulleted list of required rules
+  required: true
+
+- name: permitted
+  description: Bulleted list of permitted rules
+  required: true
+
+- name: forbidden
+  description: Bulleted list of forbidden rules
+  required: true
+
+# Optional fields
+
+- name: note
+  description: Additional information about the licenses
+  required: false
+
+- name: using
+  description: 'A list of notable projects using the license in the form of `project_name: "url"`'
+  required: false
+
+- name: hidden
+  description: Whether the license is hidden from the license list (defaults to false)
+  required: false
+
+- name: redirect_from
+  description: Relative path(s) to redirect to the license from
+  required: false
+
+- name: featured
+  description: Whether the license should be featured on the main page (defaults to false)
+  required: false
+
+- name: nickname
+  description: A shorter, human-readable license name where the SPDX license name is long
+  required: false
+
+- name: variant
+  description: Whether the license is a variant of a family of licenses (e.g., GPL)
+  required: false
+
+- name: category
+  description: If part of a license family, the name of the license family (e.g., `GPL`)
+  required: false
+
+- name: tab-slug
+  description: If part of a license family, a license slug containing only `a-z`, `0-9`, and `_` characters
+  required: false

_includes/license-overview.html

@@ -1,8 +1,16 @@
 <div class="license-family clearfix">
   <div class="license-family-heading">
     <h3 class="license-family-name">
-      <a href="{{ license.permalink }}">
+      <a href="{{ license.url }}">
-        {% if license.category %}{{ license.category }}{% else %}{{ license.title }}{% endif %}
+        {% if license.category %}
+          {{ license.category }}
+        {% else %}
+          {% if license.nickname %}
+            {{ license.nickname }}
+          {% else %}
+            {{ license.title }}
+          {% endif %}
+        {% endif %}
       </a>
     </h3>
 
@@ -12,7 +20,7 @@
   <div class="license-details">
     <div class="license-variations js-license-variations">
       <!-- always show this div, even w/o variations, for proper spacing -->
-      {% if license.tab-slug %}
+      {% if license.category %}
       <ul class="nav-pills js-nav-pills">
         {% assign variations = site.licenses | where:"hidden",false | where:"category",license.category %}
         {% for variation in variations %}
@@ -27,7 +35,13 @@
       </ul>
       {% endif %}
     </div>
-    {% assign variations = site.licenses | where:"hidden",false | where:"category",license.category %}
+    
+    {% if license.category %}
+      {% assign variations = site.licenses | where:"hidden",false | where:"category",license.category %}
+    {% else %}
+      {% assign variations = site.licenses | where:"title",license.title %}
+    {% endif %}
+
     {% for variation in variations %}
     <div {% if variation.tab-slug %}id="{{ variation.tab-slug }}" {% endif %}class="variation-tab {% if variation.tab-slug %}variation-{{ variation.tab-slug }}{% endif %} js-variation-tab{% if license.tab-slug == variation.tab-slug %} active{% endif %}">
       <table class="license-rules">
@@ -56,7 +70,7 @@
           {% endfor %}
         </tr>
       </table>
-      <p class="small"><a href="{{ variation.permalink }}">View full {{ variation.title }} license »</a></p>
+      <p class="small"><a href="{{ variation.url }}">View full {{ variation.title }} license »</a></p>
     </div>
     {% endfor %}
   </div>

_licenses/agpl-3.0.txt

@@ -4,8 +4,6 @@ nickname: GNU Affero GPL v3.0
 category: GPL
 tab-slug: agpl-v3
 variant: true
-layout: license
-permalink: /licenses/agpl-3.0/
 source: http://www.gnu.org/licenses/agpl-3.0.txt
 redirect_from: /licenses/agpl/
 

_licenses/apache-2.0.txt

@@ -1,11 +1,8 @@
 ---
 title: Apache License 2.0
-category: Apache
-layout: license
-permalink: /licenses/apache-2.0/
 redirect_from: /licenses/apache/
-
 featured: true
+nickname: Apache
 
 description: A permissive license that also provides an express grant of patent rights from contributors to users.
 

_licenses/artistic-2.0.txt

@@ -1,10 +1,7 @@
 ---
-layout: license
 title: Artistic License 2.0
-category: Artistic
 redirect_from: /licenses/artistic/
 source: http://www.perlfoundation.org/attachment/legal/artistic-2_0.txt
-permalink: /licenses/artistic-2.0/
 
 description: Heavily favored by the Perl community, the Artistic license requires that modified versions of the software do not prevent users from running the standard version.
 

_licenses/bsd-2-clause.txt

@@ -1,12 +1,10 @@
 ---
-layout: license
 title: BSD 2-clause "Simplified" License
 nickname: Simplified BSD
 category: BSD
 tab-slug: bsd
 variant: true
 redirect_from: /licenses/bsd/
-permalink: /licenses/bsd-2-clause/
 
 description: A permissive license that comes in two variants, the <a href="/licenses/bsd">BSD 2-Clause</a> and <a href="/licenses/bsd-3-clause">BSD 3-Clause</a>. Both have very minute differences to the MIT license.
 

_licenses/bsd-3-clause.txt

@@ -1,11 +1,9 @@
 ---
-layout: license
 title: BSD 3-clause "New" or "Revised" License
 nickname: New BSD
 category: BSD
 tab-slug: bsd-3
 variant: true
-permalink: /licenses/bsd-3-clause/
 
 description: A permissive license that comes in two variants, the <a href="/licenses/bsd">BSD 2-Clause</a> and <a href="/licenses/bsd-3-clause">BSD 3-Clause</a>. Both have very minute differences to the MIT license. The three clause variant prohibits others from using the name of the project or its contributors to promote derivative works without written consent.
 

_licenses/cc0-1.0.txt

@@ -1,13 +1,11 @@
 ---
-layout: license
 title: Creative Commons Zero v1.0 Universal
 nickname: CC0 1.0 Universal
-category: Public Domain Dedication
+redirect_from: /licenses/cc0/
+
 tab-slug: cc0
-permalink: /licenses/cc0/
+category: Public Domain Dedication
-class: license-types
 variant: true
-filename: LICENSE
 
 source: http://creativecommons.org/publicdomain/zero/1.0/
 

_licenses/epl-1.0.txt

@@ -1,9 +1,6 @@
 ---
-layout: license
 title: Eclipse Public License 1.0
-category: Eclipse
 redirect_from: /licenses/eclipse/
-permalink: /licenses/epl-1.0/
 
 description: This commercially-friendly copyleft license provides the ability to commercially license binaries; a modern royalty-free patent license grant; and the ability for linked works to use other licenses, including commercial ones.
 

_licenses/gpl-2.0.txt

@@ -1,14 +1,12 @@
 ---
 title: GNU General Public License v2.0
 nickname: GNU GPL v2.0
-category: GPL
-tab-slug: gpl-v2
-variant: false
-layout: license
-permalink: /licenses/gpl-2.0/
 redirect_from: /licenses/gpl-v2/
 source: http://www.gnu.org/licenses/gpl-2.0.txt
 
+category: GPL
+tab-slug: gpl-v2
+
 description: GPL is the most widely used free software license and has a strong copyleft requirement. When distributing derived works, the source code of the work must be made available under the same license. There are multiple variants of the GPL, each with different requirements.
 
 featured: true

_licenses/gpl-3.0.txt

@@ -4,8 +4,6 @@ nickname: GNU GPL v3.0
 category: GPL
 tab-slug: gpl-v3
 variant: true
-layout: license
-permalink: /licenses/gpl-3.0/
 redirect_from: /licenses/gpl-v3/
 source: http://www.gnu.org/licenses/gpl-3.0.txt
 

_licenses/isc.txt

@@ -1,8 +1,7 @@
 ---
-layout: license
 title: ISC License
-permalink: /licenses/isc/
 source: http://opensource.org/licenses/isc-license
+
 category: BSD
 tab-slug: isc
 
@@ -10,8 +9,6 @@ description: A permissive license lets people do anything with your code with pr
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file. Replace [year] with the current year and [fullname] with the name (or names) of the copyright holders.  [email] is optional but recommended.
 
-filename: LICENSE
-
 required:
   - include-copyright
 

_licenses/lgpl-2.1.txt

@@ -1,12 +1,11 @@
 ---
-layout: license
 title: GNU Lesser General Public License v2.1
 nickname: GNU LGPL v2.1
+redirect_from: /licenses/lgpl-v2.1/
+source: http://www.gnu.org/licenses/lgpl-2.1.txt
+
 category: LGPL
 tab-slug: lgpl-v2_1
-redirect_from: /licenses/lgpl-v2.1/
-permalink: /licenses/lgpl-2.1/
-source: http://www.gnu.org/licenses/lgpl-2.1.txt
 
 description: Primarily used for software libraries, LGPL requires that derived works be licensed under the same license, but works that only link to it do not fall under this restriction. There are two commonly used versions of the LGPL.
 

_licenses/lgpl-3.0.txt

@@ -1,5 +1,4 @@
 ---
-layout: license
 title: GNU Lesser General Public License v3.0
 nickname: GNU LGPL v3.0
 category: LGPL
@@ -7,7 +6,6 @@ tab-slug: lgpl-v3
 variant: true
 redirect_from: /licenses/lgpl-v3/
 source: http://www.gnu.org/licenses/lgpl-3.0.txt
-permalink: /licenses/lgpl-3.0/
 
 description: Version 3 of the LGPL is an additional set of permissions to the <a href="/licenses/GPL-3.0">GPL v3 license</a> that requires that derived works be licensed under the same license, but works that only link to it do not fall under this restriction.
 

_licenses/mit.txt

@@ -1,10 +1,6 @@
 ---
-layout: license
 title: MIT License
-category: MIT
-permalink: /licenses/mit/
 source: http://opensource.org/licenses/MIT
-
 featured: true
 
 description: A permissive license that is short and to the point. It lets people do anything with your code with proper attribution and without warranty.

_licenses/mpl-2.0.txt

@@ -1,10 +1,7 @@
 ---
-layout: license
 title: Mozilla Public License 2.0
-category: Mozilla
 redirect_from: /licenses/mozilla/
 source: http://www.mozilla.org/MPL/2.0/
-permalink: /licenses/mpl-2.0/
 
 description: The Mozilla Public License (MPL 2.0) is maintained by the Mozilla foundation. This license attempts to be a compromise between the permissive BSD license and the reciprocal GPL license.
 

_licenses/no-license.txt

@@ -1,9 +1,6 @@
 ---
-layout: license
-permalink: /licenses/no-license/
-category: No License
-class: license-types
 title: No License
+source: "http://choosealicense.com/no-license/"
 
 description: You retain all rights and do not permit distribution, reproduction, or derivative works. You may grant some rights in cases where you publish your source code to a site that requires accepting terms of service. For example, publishing code in a public repository on GitHub requires that you allow others to view and fork your code.
 

_licenses/ofl-1.1.txt

@@ -1,8 +1,7 @@
 ---
-layout: license
 title: SIL Open Font License 1.1
 hidden: true
-permalink: /licenses/ofl/
+redirect_from: /licenses/ofl/
 
 source: http://scripts.sil.org/OFL_web
 

_licenses/osl-3.0.txt

@@ -1,9 +1,6 @@
 ---
 title: Open Software License 3.0
-category: OSL 3.0
-layout: license
 hidden: true
-permalink: /licenses/osl-3.0/
 
 description: OSL 3.0 is a copyleft license that does not require reciprocal licensing on linked works. It also provides an express grant of patent rights from contributors to users, with a termination clause triggered if a user files a patent infringement lawsuit.
 

_licenses/unlicense.txt

@@ -1,13 +1,9 @@
 ---
-layout: license
 title: The Unlicense
+source: http://unlicense.org/UNLICENSE
+
 category: Public Domain Dedication
 tab-slug: unlicense
-permalink: /licenses/unlicense/
-class: license-types
-filename: UNLICENSE
-
-source: http://unlicense.org/UNLICENSE
 
 description: Because copyright is automatic in most countries, <a href="http://unlicense.org">the Unlicense</a> is a template to waive copyright interest in software you've written and dedicate it to the public domain. Use the Unlicense to opt out of copyright entirely. It also includes the no-warranty statement from the MIT/X11 license.
 

_licenses/wtfpl.txt

@@ -1,8 +1,5 @@
 ---
-layout: license
 title: "Do What The F*ck You Want To Public License"
-category: WTFPL
-permalink: /licenses/wtfpl/
 hidden: true
 source: http://www.wtfpl.net/
 

licenses.html

@@ -9,7 +9,7 @@ title: Licenses
 
 {% assign featured_licenses = site.licenses | where:"featured",true %}
 {% for license in featured_licenses | sort: 'path' %}
-  {% include license-overview.html %}
+  {% include license-overview.html license=license %}
 {% endfor %}
 
 <h2>Other licenses</h2>
@@ -19,5 +19,5 @@ title: Licenses
 </p>
 {% assign licenses = site.licenses | where:"featured",false | where:"hidden",false | where:"variant",false %}
 {% for license in licenses %}
-  {% include license-overview.html %}
+  {% include license-overview.html license=license %}
 {% endfor %}

script/generate-docs

@@ -0,0 +1,36 @@
+#!/usr/bin/env ruby
+# Usage: script/generate-docs
+# Reads in the fields, meta, and rules YAML files and produces markdown output
+# suitable for documenting in the project's README
+
+require 'yaml'
+
+fields = YAML.load_file("_data/fields.yml")
+meta   = YAML.load_file("_data/meta.yml")
+rules  = YAML.load_file("_data/rules.yml")
+
+puts "\n### Fields\n\n"
+fields.each do |field|
+  puts "* `#{field["name"]}` - #{field["description"]}"
+end
+
+puts "\n### YAML front matter\n"
+meta = meta.group_by { |m| m["required"] }
+
+puts "\n#### Required fields\n\n"
+meta[true].each do |meta|
+  puts "* `#{meta["name"]}` - #{meta["description"]}"
+end
+
+puts "\n#### Optional fields\n\n"
+meta[false].each do |meta|
+  puts "* `#{meta["name"]}` - #{meta["description"]}"
+end
+
+puts "\n### Rules\n"
+rules.each do |group, rules|
+  puts "\n#### #{group.capitalize}\n\n"
+  rules.each do |rule|
+    puts "* `#{rule["tag"]}` - #{rule["description"]}"
+  end
+end

spec/category_spec.rb

@@ -0,0 +1,31 @@
+require 'spec_helper'
+
+categories.each do |category|
+  describe "the #{category} category" do
+    category_licenses = licenses.select { |l| l["category"] == category }
+    primary = category_licenses.select  { |l| l["variant"] == false }
+    variants = category_licenses.select { |l| l["variant"] == true }
+
+    it "should only have one primary license" do
+      expect(primary.count).to eql(1)
+    end
+
+    it "all other licenses should be variants" do
+      expected = category_licenses.count - 1
+      expect(variants.count).to eql(expected)
+    end
+
+    category_licenses.each do |license|
+      describe "the #{license["title"]} license" do
+        it "should have a unique slug" do
+          dupes = category_licenses.select { |l| l["tab-slug"] == license["tab-slug"] }.count
+          expect(dupes).to eql(1)
+        end
+
+        it "should have a valid tab-slug" do
+          expect(license["tab-slug"]).to match(/[a-z0-9_]/)
+        end
+      end
+    end
+  end
+end

spec/license_fields_spec.rb

@@ -0,0 +1,11 @@
+require 'spec_helper'
+
+licenses.each do |license|
+  describe "The #{license["title"]} license" do
+    it "should only contain supported fields" do
+      matches = license["content"].scan /\[([a-z]+)\]/
+      extra_fields = matches.flatten - fields.map { |f| f["name"] }
+      expect(extra_fields).to be_empty
+    end
+  end
+end

spec/license_meta_spec.rb

@@ -0,0 +1,32 @@
+require 'spec_helper'
+
+licenses.each do |license|
+
+  # Manually load the raw license so we don't get thed defaults
+  raw_fields = SafeYAML.load_file("_licenses/#{license["id"]}.txt")
+
+  describe "The #{license["title"]} license" do
+    it "should only contain supported meta fields" do
+      extra_fields = raw_fields.keys - meta.map { |m| m["name"] }
+      expect(extra_fields).to be_empty
+    end
+
+    it "should contain all required meta fields" do
+      required = meta.select { |m| m["required"] }.map { |m| m["name"] }
+      missing = required - raw_fields.keys
+      expect(missing).to be_empty
+    end
+
+    if license["category"]
+      it "should contain the required license variant fields" do
+        missing = ["category", "tab-slug"] - license.keys
+        expect(missing).to be_empty
+      end
+    else
+      it "should not contain license family specific fields" do
+        extra = ["variant", "category", "tab-slug"].select{ |f| raw_fields.keys.include?(f) }
+        expect(extra).to be_empty
+      end
+    end
+  end
+end

spec/license_spec.rb

@@ -2,14 +2,6 @@ require 'spec_helper'
 
 licenses.each do |license|
   describe "The #{license["title"]} license" do
-    it "should have a title" do
-      expect(license["title"]).to_not be_nil
-    end
-
-    it "should have a description" do
-      expect(license["description"]).to_not be_nil
-    end
-
     describe "SPDX compliance" do
       # "No license" isn't really a license, so no need to test
       unless license["id"] == "no-license"

spec/spec_helper.rb

@@ -17,7 +17,11 @@ def config
 end
 
 def licenses
-  site.collections["licenses"].docs.map { |l| l.data.merge("id" => l.basename(".txt")) }
+  site.collections["licenses"].docs.map { |l| l.to_liquid.merge("id" => l.basename(".txt")) }
+end
+
+def categories
+  licenses.map { |l| l["category"] }.compact.uniq
 end
 
 def site
@@ -33,6 +37,14 @@ def rules
   site.data["rules"]
 end
 
+def fields
+  site.data["fields"]
+end
+
+def meta
+  site.data["meta"]
+end
+
 def rule?(tag, group)
   rules[group].any? { |r| r["tag"] == tag }
 end