atest lab compat

atest/resources/CodeMirror.resource

@@ -4,18 +4,28 @@ Documentation       Keywords for working with CodeMirror
 Library             JupyterLibrary
 
 
+*** Variables ***
+${CM JS TO STRING}      view.state.doc.toString()
+
+
 *** Keywords ***
 Initialize CodeMirror
     [Documentation]    Fix apparently-broken CSS/JS variable updates.
     Update Globals For JupyterLab Version
     Set Suite Variable    ${CM CSS EDITOR}    ${CM CSS EDITOR}    children=${TRUE}
     Set Suite Variable    ${CM JS INSTANCE}    ${CM JS INSTANCE}    children=${TRUE}
+    IF    "${CM JS INSTANCE}" == "${CM6 JS INSTANCE}"
+        Set Suite Variable    ${CM JS TO STRING}    view.state.doc.toString()    children=${TRUE}
+    ELSE
+        Set Suite Variable    ${CM JS TO STRING}    getValue()    children=${TRUE}
+    END
 
 Return CodeMirror Method
     [Documentation]    Construct and a method call against in the CodeMirror attached to the element
     ...    that matches a ``css`` selector with the given ``js`` code.
     ...    The CodeMirror editor instance will be available as `cm`.
     [Arguments]    ${css}    ${js}
+
     ${result} =    Execute JavaScript
     ...    return (() => {
     ...    const cm = document.querySelector(`${css}`)${CM JS INSTANCE};

atest/resources/Lab.resource

@@ -111,7 +111,7 @@ Wait Until Cell Metadata Contains
 
     ${ok} =    Set Variable    ${FALSE}
     FOR    ${i}    IN RANGE    ${attempts}
-        ${src} =    Return CodeMirror Method    ${CSS_LAB_CELL_META_JSON} ${CM CSS EDITOR}    view.state.doc.toString()
+        ${src} =    Return CodeMirror Method    ${CSS_LAB_CELL_META_JSON} ${CM CSS EDITOR}    ${CM JS TO STRING}
         ${contains} =    Set Variable    ${src.__contains__('''${text}''')}
         IF    ${inverse} and not ${contains}
             ${ok} =    Set Variable    ${TRUE}