private static void addPrototypeTest(@NotNull JstdTestCaseStructure testCaseStructure,
@Nullable JSExpression rightAssignmentOperand,
@NotNull JSDefinitionExpression wholeLeftDefExpr) {
JSReferenceExpression wholeLeftRefExpr = ObjectUtils.tryCast(wholeLeftDefExpr.getExpression(), JSReferenceExpression.class);
LeafPsiElement testMethodLeafPsiElement = null;
if (wholeLeftRefExpr != null) {
testMethodLeafPsiElement = ObjectUtils.tryCast(wholeLeftRefExpr.getReferenceNameElement(), LeafPsiElement.class);
}
if (testMethodLeafPsiElement != null && testMethodLeafPsiElement.getElementType() == JSTokenTypes.IDENTIFIER) {
JSFunctionExpression jsFunctionExpression = JsPsiUtils.extractFunctionExpression(rightAssignmentOperand);
JstdTestStructure jstdTestStructure = JstdTestStructure.newPrototypeBasedTestStructure(wholeLeftDefExpr,
testMethodLeafPsiElement,
jsFunctionExpression);
if (jstdTestStructure != null) {