SearchAPI - Query with date inequality acts like equality

[scragraham]

I have two documents with dates:

       { 
          "id": "firstdate",
          "date_entered": "2018-12-12",
          "text4": "This is a test of the national broadcasting system"
        },
        { 
          "id": "seconddate",
          "date_entered": "2019-04-04",
          "text5": "Who are the britons?"
        }

Unittest

  def test_search_query_date_less_than(self):
    """
    Test query less than a certain date
    """
    response = self.app.post(
      '/python/search/search',
      json={"index": "index-1", "query": "date_entered < 2019-04-04"})

    self.assertEquals(response.status_code, 200)
    self.assertIn('documents', response.json())
    documents = response.json()['documents']
    # Should only be one document
    self.assertEquals(len(documents), 1)
    doc = documents[0]
    # Make sure we got the right document back with that date.
    self.assertEquals(doc['date_entered'], '2018-12-12')
    self.assertEquals(doc['text4'], "This is a test of the national broadcasting system")

Expected
One document, with date_entered: 2018

Actual
One document, with date_entered: 2019

Search logs

2018-12-14 23:05:25,597 DEBUG query_parser.py:60 Query: date_entered < 2019-04-05
2018-12-14 23:05:25,598 DEBUG query_parser.py:62 Tree dump:(< (VALUE TEXT date_entered) (VALUE TEXT 2019-04-05))
2018-12-14 23:05:25,598 DEBUG query_parser.py:220 Query string: hawkeyepython27__index-1_date_entered:"2019\-04\-05"
2018-12-14 23:05:25,598 DEBUG query_parser.py:222 Encoded: hawkeyepython27__index-1_date_entered%3A%222019%5C-04%5C-05%22
2018-12-14 23:05:25,598 DEBUG query_parser.py:64 Query string q=_gaeindex_name%3Ahawkeyepython27__index-1+AND+hawkeyepython27__index-1_date_entered%3A%222019%5C-04%5C-05%22
2018-12-14 23:05:25,598 DEBUG query_parser.py:72 Field list:
2018-12-14 23:05:25,598 DEBUG query_parser.py:76 Using default field list
2018-12-14 23:05:25,599 DEBUG query_parser.py:90 SOLR STRING: q=_gaeindex_name%3Ahawkeyepython27__index-1+AND+hawkeyepython27__index-1_date_entered%3A%222019%5C-04%5C-05%22&defType=edismax&fl=id+_gaeindex_locale+hawkeyepython27__index-1_anotherText+hawkeyepython27__index-1_date_entered+hawkeyepython27__index-1_text1+hawkeyepython27__index-1_text2+hawkeyepython27__index-1_text3+hawkeyepython27__index-1_text4+hawkeyepython27__index-1_text5&qf=hawkeyepython27__index-1_anotherText+hawkeyepython27__index-1_date_entered+hawkeyepython27__index-1_text1+hawkeyepython27__index-1_text2+hawkeyepython27__index-1_text3+hawkeyepython27__index-1_text4+hawkeyepython27__index-1_text5&pf=hawkeyepython27__index-1_anotherText+hawkeyepython27__index-1_date_entered+hawkeyepython27__index-1_text1+hawkeyepython27__index-1_text2+hawkeyepython27__index-1_text3+hawkeyepython27__index-1_text4+hawkeyepython27__index-1_text5&rows=20&start=0
2018-12-14 23:05:25,599 DEBUG solr_interface.py:331 Solr query: q=_gaeindex_name%3Ahawkeyepython27__index-1+AND+hawkeyepython27__index-1_date_entered%3A%222019%5C-04%5C-05%22&defType=edismax&fl=id+_gaeindex_locale+hawkeyepython27__index-1_anotherText+hawkeyepython27__index-1_date_entered+hawkeyepython27__index-1_text1+hawkeyepython27__index-1_text2+hawkeyepython27__index-1_text3+hawkeyepython27__index-1_text4+hawkeyepython27__index-1_text5&qf=hawkeyepython27__index-1_anotherText+hawkeyepython27__index-1_date_entered+hawkeyepython27__index-1_text1+hawkeyepython27__index-1_text2+hawkeyepython27__index-1_text3+hawkeyepython27__index-1_text4+hawkeyepython27__index-1_text5&pf=hawkeyepython27__index-1_anotherText+hawkeyepython27__index-1_date_entered+hawkeyepython27__index-1_text1+hawkeyepython27__index-1_text2+hawkeyepython27__index-1_text3+hawkeyepython27__index-1_text4+hawkeyepython27__index-1_text5&rows=20&start=0
2018-12-14 23:05:25,599 DEBUG solr_interface.py:350 SOLR URL: http://192.168.33.12:8983/solr/select/?wt=json&q=_gaeindex_name%3Ahawkeyepython27__index-1+AND+hawkeyepython27__index-1_date_entered%3A%222019%5C-04%5C-05%22&defType=edismax&fl=id+_gaeindex_locale+hawkeyepython27__index-1_anotherText+hawkeyepython27__index-1_date_entered+hawkeyepython27__index-1_text1+hawkeyepython27__index-1_text2+hawkeyepython27__index-1_text3+hawkeyepython27__index-1_text4+hawkeyepython27__index-1_text5&qf=hawkeyepython27__index-1_anotherText+hawkeyepython27__index-1_date_entered+hawkeyepython27__index-1_text1+hawkeyepython27__index-1_text2+hawkeyepython27__index-1_text3+hawkeyepython27__index-1_text4+hawkeyepython27__index-1_text5&pf=hawkeyepython27__index-1_anotherText+hawkeyepython27__index-1_date_entered+hawkeyepython27__index-1_text1+hawkeyepython27__index-1_text2+hawkeyepython27__index-1_text3+hawkeyepython27__index-1_text4+hawkeyepython27__index-1_text5&rows=20&start=0
2018-12-14 23:05:25,601 DEBUG solr_interface.py:361 Response: {'responseHeader': {'status': 0, 'QTime': 1, 'params': {'defType': 'edismax', 'rows': '20', 'q': '_gaeindex_name:hawkeyepython27__index-1 AND hawkeyepython27__index-1_date_entered:"2019\\-04\\-05"', 'start': '0', 'wt': 'json', 'pf': 'hawkeyepython27__index-1_anotherText hawkeyepython27__index-1_date_entered hawkeyepython27__index-1_text1 hawkeyepython27__index-1_text2 hawkeyepython27__index-1_text3 hawkeyepython27__index-1_text4 hawkeyepython27__index-1_text5', 'qf': 'hawkeyepython27__index-1_anotherText hawkeyepython27__index-1_date_entered hawkeyepython27__index-1_text1 hawkeyepython27__index-1_text2 hawkeyepython27__index-1_text3 hawkeyepython27__index-1_text4 hawkeyepython27__index-1_text5', 'fl': 'id _gaeindex_locale hawkeyepython27__index-1_anotherText hawkeyepython27__index-1_date_entered hawkeyepython27__index-1_text1 hawkeyepython27__index-1_text2 hawkeyepython27__index-1_text3 hawkeyepython27__index-1_text4 hawkeyepython27__index-1_text5'}}, 'response': {'start': 0, 'numFound': 0, 'docs': []}}