[TASK] Functional test for tt_content rendering

Add functional tests for tt_content rendering
with different combinations of TypoScript language
settings sys_language_overlay and sys_language_mode.

Resolves: #81185
Releases: master, 8.7
Change-Id: I7df5b48a2baa3a52f8c6103b0657b21226c6ea5c
Reviewed-on: https://review.typo3.org/52750


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>

typo3/sysext/core/Tests/Functional/Fixtures/Frontend/JsonRenderer.ts

@@ -235,6 +235,24 @@ page {
 		stdWrap.postUserFunc = TYPO3\TestingFramework\Core\Functional\Framework\Frontend\Collector->attachSection
 		stdWrap.postUserFunc.as = Default
 	}
+	99999 = COA
+	99999 {
+		stdWrap.postUserFunc = TYPO3\TestingFramework\Core\Functional\Framework\Frontend\Renderer->renderValues
+		stdWrap.postUserFunc.values {
+			page.children {
+				uid.data = page:uid
+				pid.data = page:pid
+				title.data = page:title
+			}
+			tsfe.children {
+				sys_language_uid.data = tsfe:sys_language_uid
+				sys_language_mode.data = tsfe:sys_language_mode
+				sys_language_content.data = tsfe:sys_language_content
+				sys_language_contentOL.data = tsfe:sys_language_contentOL
+			}
+		}
+		stdWrap.postUserFunc.as = Scope
+	}
 	stdWrap.postUserFunc = TYPO3\TestingFramework\Core\Functional\Framework\Frontend\Renderer->renderSections
 }
 
@@ -244,3 +262,6 @@ config.sys_language_uid = 1
 [globalVar = GP:L = 2]
 config.sys_language_uid = 2
 [end]
+[globalVar = GP:L = 3]
+config.sys_language_uid = 3
+[end]
\ No newline at end of file

typo3/sysext/frontend/Tests/Functional/Rendering/DataSet/404Template.html

+{
+"status": 404,
+"error": "###REASON###"
+}
\ No newline at end of file

typo3/sysext/frontend/Tests/Functional/Rendering/DataSet/LiveDefaultElements.csv

+sys_language,,,,,,,,,,,,,,
+,uid,pid,hidden,title,flag,,,,,,,,,
+,1,0,0,Dansk,dk,,,,,,,,,
+,2,0,0,Deutsch,de,,,,,,,,,
+,3,0,0,Polski,pl,,,,,,,,,
+tt_content,,,,,,,,,,,,,,
+,uid,pid,sorting,deleted,sys_language_uid,l18n_parent,l10n_source,t3_origuid,t3ver_wsid,t3ver_state,t3ver_stage,t3ver_oid,t3ver_move_id,header
+,297,89,256,0,0,0,0,0,0,0,0,0,0,Regular Element #1
+,298,89,512,0,0,0,0,0,0,0,0,0,0,Regular Element #2
+,299,89,768,0,0,0,0,0,0,0,0,0,0,Regular Element #3
+,300,89,1024,0,1,299,299,299,0,0,0,0,0,[Translate to Dansk:] Regular Element #3
+,301,89,384,0,1,297,297,297,0,0,0,0,0,[Translate to Dansk:] Regular Element #1
+,302,89,448,0,2,297,301,301,0,0,0,0,0,[Translate to Deutsch:] [Translate to Dansk:] Regular Element #1
+,303,89,1250,0,1,0,0,0,0,0,0,0,0,[DK] Without default language
+,304,89,1250,0,2,0,0,0,0,0,0,0,0,[DE] Without default language
+,305,89,512,0,3,297,297,297,0,0,0,0,0,[Translate to Polski:] Regular Element #1
+,306,89,1024,0,3,0,0,0,0,0,0,0,0,[PL] Without default language
\ No newline at end of file

typo3/sysext/frontend/Tests/Functional/Rendering/DataSet/LiveDefaultPages.csv

+pages,,,,,,,,,,,
+,uid,pid,sorting,deleted,t3_origuid,t3ver_wsid,t3ver_state,t3ver_stage,t3ver_oid,t3ver_move_id,title
+,1,0,256,0,0,0,0,0,0,0,Root page
+,88,1,256,0,0,0,0,0,0,0,Subpage
+,89,88,256,0,0,0,0,0,0,0,Default language Page
+pages_language_overlay,,,,,,,,,,,
+,uid,pid,deleted,sys_language_uid,t3ver_wsid,t3ver_state,t3ver_stage,t3ver_oid,title,l10n_state,
+,1,89,0,1,0,0,0,0,[DK]Page,"{""title"":""parent""}",
+,2,89,0,3,0,0,0,0,[PL]Page,"{""title"":""parent""}",