unrelated validation updates

update some missing aria attributes for the specified roles, unrelated to the overall img role tests

tests/img-allowed-roles.html

@@ -65,7 +65,7 @@ <h3>Test 1</h3>
         		</p>
 
 
-				<div class="testcase">
+				<div class="testcase" id=tc1>
 					<p>with alt</p>
 					<p><img src=# alt=image role=img></p>
 					<p><img src=# alt=button role=button tabindex=0></p>
@@ -78,12 +78,12 @@ <h3>Test 1</h3>
 					<p role=listbox aria-label=test><img src=# alt=option role=option tabindex=0 aria-selected=false></p>
 					<p><img src=# alt=progressbar role=progressbar></p>
 					<p><img src=# alt=radio role=radio tabindex=0 aria-checked=false></p>
-					<p><img src=# alt=scrollbar role=scrollbar aria-valuenow=0 tabindex="0"></p>
+					<p><img src=# alt=scrollbar role=scrollbar aria-valuenow=0 tabindex="0" aria-controls=tc1></p>
 					<p><img src=# alt=separator role=separator aria-valuenow=0 tabindex="0"></p>
 					<p><img src=# alt=slider role=slider aria-valuenow=0 tabindex="0"></p>
 					<p><img src=# alt=switch role=switch aria-checked=false tabindex="0"></p>
 					<p role=tablist><img src=# alt=tab tabindex=0 role=tab aria-selected=true></p>
-					<p role=tree><img src=# alt=treeitem role=treeitem tabindex=0></p>
+					<p role=tree aria-label=treetest><img src=# alt=treeitem role=treeitem tabindex=0></p>
 					<p><img src=# alt=doc-cover role=doc-cover></p>
 
 					<p>with title</p>
@@ -98,12 +98,12 @@ <h3>Test 1</h3>
 					<p role=listbox title=test><img src=# title=option role=option tabindex=0 aria-selected=false></p>
 					<p><img src=# title=progressbar role=progressbar></p>
 					<p><img src=# title=radio role=radio tabindex=0 aria-checked=false></p>
-					<p><img src=# title=scrollbar role=scrollbar aria-valuenow=0 tabindex="0"></p>
+					<p><img src=# title=scrollbar role=scrollbar aria-valuenow=0 tabindex="0" aria-controls=tc1></p>
 					<p><img src=# title=separator role=separator aria-valuenow=0 tabindex="0"></p>
 					<p><img src=# title=slider role=slider aria-valuenow=0 tabindex="0"></p>
 					<p><img src=# title=switch role=switch aria-checked=false tabindex="0"></p>
 					<p role=tablist><img src=# title=tab tabindex=0 role=tab aria-selected=true></p>
-					<p role=tree><img src=# title=treeitem role=treeitem tabindex=0></p>
+					<p role=tree aria-label=testcase><img src=# title=treeitem role=treeitem tabindex=0></p>
 					<p><img src=# title=doc-cover role=doc-cover></p>
 
 					<p>with aria-label</p>
@@ -118,12 +118,12 @@ <h3>Test 1</h3>
 					<p role=listbox aria-label=test><img src=# aria-label=option role=option tabindex=0 aria-selected=false></p>
 					<p><img src=# aria-label=progressbar role=progressbar></p>
 					<p><img src=# aria-label=radio role=radio tabindex=0 aria-checked=false></p>
-					<p><img src=# aria-label=scrollbar role=scrollbar aria-valuenow=0 tabindex="0"></p>
+					<p><img src=# aria-label=scrollbar role=scrollbar aria-valuenow=0 tabindex="0" aria-controls=tc1></p>
 					<p><img src=# aria-label=separator role=separator aria-valuenow=0 tabindex="0"></p>
 					<p><img src=# aria-label=slider role=slider aria-valuenow=0 tabindex="0"></p>
 					<p><img src=# aria-label=switch role=switch aria-checked=false tabindex="0"></p>
 					<p role=tablist><img src=# aria-label=tab tabindex=0 role=tab aria-selected=true></p>
-					<p role=tree><img src=# aria-label=treeitem role=treeitem tabindex=0></p>
+					<p role=tree aria-label=testcase><img src=# aria-label=treeitem role=treeitem tabindex=0></p>
 					<p><img src=# aria-label=doc-cover role=doc-cover></p>
 
 					<p id=al>with aria-labelledby</p>
@@ -138,12 +138,12 @@ <h3>Test 1</h3>
 					<p role=listbox aria-label=test><img src=# aria-labelledby=al role=option tabindex=0 aria-selected=false></p>
 					<p><img src=# aria-labelledby=al role=progressbar></p>
 					<p><img src=# aria-labelledby=al role=radio tabindex=0 aria-checked=false></p>
-					<p><img src=# aria-labelledby=al role=scrollbar aria-valuenow=0 tabindex="0"></p>
+					<p><img src=# aria-labelledby=al role=scrollbar aria-valuenow=0 tabindex="0" aria-controls=tc1></p>
 					<p><img src=# aria-labelledby=al role=separator aria-valuenow=0 tabindex="0"></p>
 					<p><img src=# aria-labelledby=al role=slider aria-valuenow=0 tabindex="0"></p>
 					<p><img src=# aria-labelledby=al role=switch aria-checked=false tabindex="0"></p>
 					<p role=tablist><img src=# aria-labelledby=al tabindex=0 role=tab aria-selected=true></p>
-					<p role=tree><img src=# aria-labelledby=al role=treeitem tabindex=0></p>
+					<p role=tree aria-label=testcase><img src=# aria-labelledby=al role=treeitem tabindex=0></p>
 					<p><img src=# aria-labelledby=al role=doc-cover></p>
 				</div>
 
@@ -161,7 +161,6 @@ <h3>Test 2</h3>
 				<div class="testcase">
 					<img src=# alt role=none>
 					<img src=# alt role=presentation>
-
 					<img src=# role=img>
 					<img src=# role=none>
 					<img src=# role=presentation>