+A only test:test_group1
+B only test:test_group1
+A and +B test:test_group1
No project test:test_group1
Different item test:test_group2 l:1
Another item test:test_group2 l:0
Test 1 due:2016-12-06 test:test_group3
Test 2 due:2016-12-07 test:test_group3
Test 1 t:2016-12-06 test:test_group4 test:test_group5
Test 2 t:2016-12-07 test:test_group4 test:test_group5
Group by non-existing tag test:test_group6
Sort descending +A test:test_group7
Sort descending +B test:test_group7
Inner sort 1 +A @A test:test_group8
Inner sort 2 +A @B test:test_group8
Inner sort 3 +B @A test:test_group8
Inner sort 4 +B @B test:test_group8
Inner sort 1 +A test:test_group9
Inner sort 2 +A test:test_group9
