Fixed between operator

.coveragerc

@@ -0,0 +1,2 @@
+[run]
+relative_files = True

.github/workflows/django.yml

@@ -0,0 +1,51 @@
+name: Django CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 4
+      matrix:
+        python-version: [3.7, 3.8, 3.9]
+
+    services:
+      dynamodb:
+        image: amazon/dynamodb-local
+        ports:
+          - 8000:8000
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install Dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r tests/requirements.txt
+        pip install -e .
+    - name: Run Tests
+      run: |
+        flake8 --config .config/flake8 pydjamodb
+        coverage run tests/manage.py test tests
+    - name: Coveralls
+      uses: AndreMiras/coveralls-python-action@develop
+      with:
+        parallel: true
+        flag-name: Unit Test
+
+  coveralls_finish:
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+    - name: Coveralls Finished
+      uses: AndreMiras/coveralls-python-action@develop
+      with:
+        parallel-finished: true

README.md

@@ -3,6 +3,8 @@ Prolog
 
 `pydjamodb` library is Django connector to the AWS DynamoDB. As a base is used `PynamoDB` library which models is transformed into `Django` model structure with the querysets and managers.
 
+[![Coverage Status](https://coveralls.io/repos/github/druids/pydjamodb/badge.svg?branch=master)](https://coveralls.io/github/druids/pydjamodb?branch=master)
+
 Installation
 ------------
 

pydjamodb/queryset.py

@@ -205,6 +205,8 @@ def filter(self, **kwargs):
 
         obj._pre_filter(field, field_name, operator, value)
         obj._filter = obj._get_filter(field, operator, value)
+        if operator == 'between' and value[0] > value[1]:
+            return self.none()
         return obj
 
     def get(self, **kwargs):

tests/requirements.txt

@@ -1,4 +1,4 @@
 https://github.com/druids/pynamodb/tarball/AddTagsSupport#egg=pynamodb
 django-germanium==2.2.3
 flake8
-coverage
+coveralls

tests/test_app/tests/__init__.py

@@ -99,6 +99,7 @@ def test_queryset_filter_should_return_filtered_items(self):
         qs = TestDynamoModel.objects_string_number.set_hash_key('test')
         assert_equal(list(qs.filter(number=5)), [instances[5]])
         assert_equal(list(qs.filter(number__between=(2, 4))), instances[2:5])
+        assert_equal(list(qs.filter(number__between=(4, 2))), [])
         assert_equal(list(qs.filter(number__gt=4)), instances[5:])
         assert_equal(list(qs.filter(number__lte=4)), instances[:5])