/**
* Asserts that {@link ExtractUtils#getNodePrefix(DartNode)} in {@link #testUnit} has expected
* prefix.
*/
private void assert_getNodePrefix(String nodePattern, String expectedPrefix) throws Exception {
// prepare AST
ExtractUtils utils = new ExtractUtils(testUnit);
// find node
int nodeOffset = findOffset(nodePattern);
DartVariableStatement node =
findNode(utils.getUnitNode(), nodeOffset, DartVariableStatement.class);
assertNotNull(node);
// assert prefix
assertEquals(expectedPrefix, utils.getNodePrefix(node));
}
