add data-testid to sequence panel

theatre/studio/src/panels/SequenceEditorPanel/DopeSheet/DopeSheet.tsx

@@ -20,7 +20,10 @@ const DopeSheet: React.VFC<{layoutP: Pointer<SequenceEditorPanelLayout>}> = ({
   const height = useVal(layoutP.dopeSheetDims.height)
 
   return (
-    <Container style={{height: height + 'px'}}>
+    <Container
+      data-testid="SequencePanel-Object"
+      style={{height: height + 'px'}}
+    >
       <DopeSheetBackground layoutP={layoutP} />
       <VerticalScrollContainer>
         <Left layoutP={layoutP} />

theatre/studio/src/panels/SequenceEditorPanel/DopeSheet/Left/AnyCompositeRow.tsx

@@ -119,7 +119,9 @@ const AnyCompositeRow: React.FC<{
         <LeftRowHead_Icon isCollapsed={isCollapsed} onClick={toggleCollapsed}>
           <HiOutlineChevronRight />
         </LeftRowHead_Icon>
-        <LeftRowHead_Label>{label}</LeftRowHead_Label>
+        <LeftRowHead_Label data-testid="SequencePanel-Title">
+          {label}
+        </LeftRowHead_Label>
       </LeftRowHeader>
       {hasChildren && <LeftRowChildren>{children}</LeftRowChildren>}
     </LeftRowContainer>

theatre/studio/src/panels/SequenceEditorPanel/DopeSheet/Left/Left.tsx

@@ -26,7 +26,10 @@ const Left: React.VFC<{
     const width = val(layoutP.leftDims.width)
 
     return (
-      <Container style={{width: width + 'px', top: tree.top + 'px'}}>
+      <Container
+        data-testid="SequencePanel-Left"
+        style={{width: width + 'px', top: tree.top + 'px'}}
+      >
         <ListContainer>
           <SheetRow leaf={tree} />
         </ListContainer>

theatre/studio/src/panels/SequenceEditorPanel/DopeSheet/Left/PrimitivePropRow.tsx

@@ -151,7 +151,9 @@ const PrimitivePropRow: React.FC<{
         }}
         isSelected={isSelected === true}
       >
-        <PrimitivePropRowHead_Label>{label}</PrimitivePropRowHead_Label>
+        <PrimitivePropRowHead_Label data-testid="SequencePanel-PropTitle">
+          {label}
+        </PrimitivePropRowHead_Label>
         {controlIndicators}
         <PrimitivePropRowIconContainer
           onClick={toggleSelect}