Improve and document the files in tests/data/

* Remove 'wgMetaNamespace' and 'wgMetaNamespaceTalk', the same data
  exists in 'wgFormattedNamespaces'.

* Rename 'wgContentLang' to 'wgContentLanguage', to match its real
  name in JS config. MediaWiki doesn't use 'wgContentLang' anywhere,
  although the related PHP global is called $wgContLang.

* Document how I made these files, previously only mentioned in the
  commit message of e9c401e3aa.

Change-Id: I67f962812c155aedf41154e0d837e7feb5af972d

tests/data/README.txt

@@ -1,2 +1,10 @@
 Minimal overrides for Hooks::getLocalData() and mw.config
 required for us to be able to parse HTML generated by the given wiki.
+
+To make one of these files, run the following in browser console:
+
+config.json:
+  JSON.stringify( mw.config.get( [ 'wgContentLanguage', 'wgArticlePath', 'wgNamespaceIds', 'wgFormattedNamespaces' ] ), null, 2 )
+
+data.json:
+  JSON.stringify( mw.loader.moduleRegistry[ 'ext.discussionTools.init' ].packageExports[ 'parser/data.json' ], null, 2 )

tests/data/arwiki-config.json

@@ -1,8 +1,6 @@
 {
-  "wgContentLang": "ar",
+  "wgContentLanguage": "ar",
   "wgArticlePath": "/wiki/$1",
-  "wgMetaNamespace": "ويكيبيديا",
-  "wgMetaNamespaceTalk": "نقاش_ويكيبيديا",
   "wgTranslateNumerals": false,
   "wgNamespaceIds": {
     "ميديا": -2,

tests/data/enwiki-config.json

@@ -1,8 +1,6 @@
 {
-  "wgContentLang": "en",
+  "wgContentLanguage": "en",
   "wgArticlePath": "/wiki/$1",
-  "wgMetaNamespace": "Wikipedia",
-  "wgMetaNamespaceTalk": "Wikipedia_talk",
   "wgNamespaceIds": {
     "media": -2,
     "special": -1,

tests/data/frwiki-config.json

@@ -1,8 +1,6 @@
 {
-  "wgContentLang": "fr",
+  "wgContentLanguage": "fr",
   "wgArticlePath": "/wiki/$1",
-  "wgMetaNamespace": "Wikipédia",
-  "wgMetaNamespaceTalk": "Discussion_Wikipédia",
   "wgNamespaceIds": {
     "média": -2,
     "spécial": -1,

tests/data/huwiki-config.json

@@ -1,8 +1,6 @@
 {
-  "wgContentLang": "hu",
+  "wgContentLanguage": "hu",
   "wgArticlePath": "/wiki/$1",
-  "wgMetaNamespace": "Wikipédia",
-  "wgMetaNamespaceTalk": "Wikipédia-vita",
   "wgNamespaceIds": {
     "média": -2,
     "speciális": -1,

tests/data/nlwiki-config.json

@@ -1,8 +1,6 @@
 {
-  "wgContentLang": "nl",
+  "wgContentLanguage": "nl",
   "wgArticlePath": "/wiki/$1",
-  "wgMetaNamespace": "Wikipedia",
-  "wgMetaNamespaceTalk": "Overleg_Wikipedia",
   "wgNamespaceIds": {
     "media": -2,
     "speciaal": -1,

tests/data/plwiki-config.json

@@ -1,8 +1,6 @@
 {
-  "wgContentLang": "pl",
+  "wgContentLanguage": "pl",
   "wgArticlePath": "/wiki/$1",
-  "wgMetaNamespace": "Wikipedia",
-  "wgMetaNamespaceTalk": "Dyskusja_Wikipedii",
   "wgNamespaceIds": {
     "media": -2,
     "specjalna": -1,

tests/phpunit/CommentTestCase.php

@@ -126,10 +126,12 @@ abstract class CommentTestCase extends MediaWikiTestCase {
 		$this->setMwGlobals( [
 			'wgArticlePath' => $config['wgArticlePath'],
 			'wgNamespaceAliases' => $config['wgNamespaceIds'],
+			'wgMetaNamespace' => strtr( $config['wgFormattedNamespaces'][NS_PROJECT], ' ', '_' ),
+			'wgMetaNamespaceTalk' => strtr( $config['wgFormattedNamespaces'][NS_PROJECT_TALK], ' ', '_' ),
 			// TODO: Move this to $config
 			'wgLocaltimezone' => $data['localTimezone']
 		] );
-		$this->setUserLang( $config['wgContentLang'] );
-		$this->setContentLang( $config['wgContentLang'] );
+		$this->setUserLang( $config['wgContentLanguage'] );
+		$this->setContentLang( $config['wgContentLanguage'] );
 	}
 }