public void testRanges() throws Exception {
Directory dir = newDirectory();
RandomIndexWriter iw = new RandomIndexWriter(random(), dir);
Document doc = new Document();
Field field = newField("field", "", StringField.TYPE_STORED);
Collator collator = Collator.getInstance(); // uses -Dtests.locale
if (random().nextBoolean()) {
collator.setStrength(Collator.PRIMARY);
}
ICUCollationDocValuesField collationField = new ICUCollationDocValuesField("collated", collator);
doc.add(field);
doc.add(collationField);
int numDocs = atLeast(500);
for (int i = 0; i < numDocs; i++) {
String value = TestUtil.randomSimpleString(random());
field.setStringValue(value);
collationField.setStringValue(value);
iw.addDocument(doc);
}
IndexReader ir = iw.getReader();
iw.close();
IndexSearcher is = newSearcher(ir);
int numChecks = atLeast(100);
for (int i = 0; i < numChecks; i++) {
String start = TestUtil.randomSimpleString(random());
String end = TestUtil.randomSimpleString(random());
BytesRef lowerVal = new BytesRef(collator.getCollationKey(start).toByteArray());
BytesRef upperVal = new BytesRef(collator.getCollationKey(end).toByteArray());
Query query = new ConstantScoreQuery(FieldCacheRangeFilter.newBytesRefRange("collated", lowerVal, upperVal, true, true));
doTestRanges(is, start, end, query, collator);
}
ir.close();