test output with augmented assignment

Author: princemaple

tests/syntax_test_scopes.component.html

@@ -1119,7 +1119,21 @@
 
 
 <div (output)="var += exp" >
+<!--^^^^^^^^^^^^^^^^^^^^^^^ meta.tag -->
+<!-- ^^^^^^^^ meta.directive.on.ngx -->
+<!--         ^ meta.directive.ngx -->
+<!--          ^^^^^^^^^^^ meta.directive.value.ngx meta.string.ngx -->
+<!-- ^ punctuation.definition.on.begin.ngx -->
+<!--  ^^^^^^ entity.other.attribute-name.on.ngx -->
+<!--        ^ punctuation.definition.on.end.ngx -->
+<!--         ^ punctuation.separator.key-value.ngx -->
+<!--          ^ string.quoted.double.ngx punctuation.definition.string.begin.ngx -->
+<!--           ^^^^^^^^^ meta.embedded.expression.ngx source.ngx.embedded.html - string -->
+<!--           ^^^ variable.other.readwrite.ngx -->
 <!--               ^^ keyword.operator.assignment.augmented.ngx -->
+<!--                  ^^^ variable.other.readwrite.ngx -->
+<!--                     ^ string.quoted.double.ngx punctuation.definition.string.end.ngx -->
+<!--                       ^ punctuation.definition.tag.end.html -->
 
 <div (output)="var -= exp" >
 <!--               ^^ keyword.operator.assignment.augmented.ngx -->