Add tests to avoid future breakage

test/spec/Feature/Query/RangeSpec.hs

@@ -145,6 +145,14 @@ spec = do
  it "returns whole range with status 200" $
  get "/items" `shouldRespondWith` 200
 
+ context "count with an empty body" $ do
+ it "returns empty body with Content-Range */0" $
+ request methodGet "/items?id=eq.0"
+ [("Prefer", "count=exact")] ""
+ `shouldRespondWith`
+ [json|[]|]
+ { matchHeaders = ["Content-Range" <:> "*/0"] } 
+
  context "when I don't want the count" $ do
  it "returns range Content-Range with /*" $
  request methodGet "/menagerie"
@@ -211,11 +219,24 @@ spec = do
  , "Content-Range" <:> "2-4/*" ]
  }
 
- it "succeeds if offset equals 0 as a no-op" $
- get "/items?select=id&offset=0&order=id"
- `shouldRespondWith`
- [json|[{"id":1},{"id":2},{"id":3},{"id":4},{"id":5},{"id":6},{"id":7},{"id":8},{"id":9},{"id":10},{"id":11},{"id":12},{"id":13},{"id":14},{"id":15}]|]
- { matchHeaders = ["Content-Range" <:> "0-14/*"] }
+ context "succeeds if offset equals 0 as a no-op" $ do
+ it "no items" $ do
+ get "/items?offset=0&id=eq.0"
+ `shouldRespondWith`
+ [json|[]|]
+ { matchHeaders = ["Content-Range" <:> "*/*"] }
+
+ request methodGet "/items?offset=0&id=eq.0"
+ [("Prefer", "count=exact")] ""
+ `shouldRespondWith`
+ [json|[]|]
+ { matchHeaders = ["Content-Range" <:> "*/0"] }
+
+ it "one or more items" $
+ get "/items?select=id&offset=0&order=id"
+ `shouldRespondWith`
+ [json|[{"id":1},{"id":2},{"id":3},{"id":4},{"id":5},{"id":6},{"id":7},{"id":8},{"id":9},{"id":10},{"id":11},{"id":12},{"id":13},{"id":14},{"id":15}]|]
+ { matchHeaders = ["Content-Range" <:> "0-14/*"] }
 
  it "succeeds if offset is negative as a no-op" $
  get "/items?select=id&offset=-4&order=id"