239 lines
9.0 KiB
Nix
239 lines
9.0 KiB
Nix
let
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fetchNixpkgs = import ./nix/fetchNixpkgs.nix;
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nixpkgs = fetchNixpkgs {
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rev = "804060ff9a79ceb0925fe9ef79ddbf564a225d47";
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sha256 = "01pb6p07xawi60kshsxxq1bzn8a0y4s5jjqvhkwps4f5xjmmwav3";
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outputSha256 = "0ga345hgw6v2kzyhvf5kw96hf60mx5pbd9c4qj5q4nan4lr7nkxn";
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};
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config = {
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packageOverrides = pkgs: {
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haskellPackages = pkgs.haskellPackages.override {
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overrides = haskellPackagesNew: haskellPackagesOld: {
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dhall = haskellPackagesNew.callPackage ./nix/dhall.nix { };
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dhall-nix =
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pkgs.haskell.lib.failOnAllWarnings
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(pkgs.haskell.lib.justStaticExecutables
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(haskellPackagesNew.callPackage ./nix/dhall-nix.nix { })
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);
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formatting = haskellPackagesOld.formatting_6_3_0;
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prettyprinter = haskellPackagesOld.prettyprinter_1_2_0_1;
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};
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};
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};
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};
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pkgs =
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import nixpkgs { inherit config; };
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inherit (pkgs) dhallToNix;
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in
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{ dhall-nix = pkgs.haskellPackages.dhall-nix;
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# Test that various Dhall to Nix conversions work
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tests =
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let
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testConst = dhallToNix "Type";
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testLam = dhallToNix "λ(x : Bool) → x";
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testPi = dhallToNix "Bool → Bool";
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testApp = dhallToNix "λ(f : Bool → Bool) → λ(x : Bool) → f x";
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testLet = dhallToNix "λ(b : Bool) → let x = b in x";
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testAnnot = dhallToNix "True : Bool";
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testBool = dhallToNix "Bool";
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testBoolLit = dhallToNix "True";
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testBoolAnd = dhallToNix "λ(l : Bool) → λ(r : Bool) → l && r";
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testBoolOr = dhallToNix "λ(l : Bool) → λ(r : Bool) → l || r";
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testBoolEQ = dhallToNix "λ(l : Bool) → λ(r : Bool) → l == r";
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testBoolNE = dhallToNix "λ(l : Bool) → λ(r : Bool) → l != r";
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testBoolIf = dhallToNix "λ(x : Bool) → if x then True else False";
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testNatural = dhallToNix "Natural";
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testNaturalLit = dhallToNix "+123";
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testNaturalFold = dhallToNix ''
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λ(x : Natural)
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→ Natural/fold x Natural (λ(n : Natural) → +2 + n) +0
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'';
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testNaturalBuild = dhallToNix ''
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λ(b : Bool)
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→ Natural/build
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( λ(natural : Type)
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→ λ(succ : natural → natural)
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→ λ(zero : natural)
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→ if b then succ zero else zero
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)
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'';
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testNaturalIsZero = dhallToNix "Natural/isZero";
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testNaturalEven = dhallToNix "Natural/even";
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testNaturalOdd = dhallToNix "Natural/odd";
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testNaturalToInteger = dhallToNix "Natural/toInteger";
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testNaturalShow = dhallToNix "Natural/show";
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testNaturalPlus = dhallToNix "λ(x : Natural) → λ(y : Natural) → x + y";
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testNaturalTimes = dhallToNix "λ(x : Natural) → λ(y : Natural) → x * y";
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testInteger = dhallToNix "Integer";
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testIntegerLit = dhallToNix "123";
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testIntegerShow = dhallToNix "Integer/show";
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testDouble = dhallToNix "Double";
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testTextLit = dhallToNix ''"ABC"'';
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testInterpolation = dhallToNix ''λ(x : Text) → "ABC''${x}GHI"'' "DEF";
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testTextAppend = dhallToNix "λ(x : Text) → λ(y : Text) → x ++ y";
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testList = dhallToNix "List Integer";
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testListLit = dhallToNix "[1, 2, 3] : List Integer";
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testListAppend = dhallToNix ''
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λ(xs : List Integer) → λ(ys : List Integer) → xs # ys
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'';
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testListBuild = dhallToNix ''
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λ(b : Bool)
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→ List/build
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Integer
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( λ(list : Type)
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→ λ(cons : Integer → list → list)
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→ λ(nil : list)
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→ if b then cons 1 (cons 2 (cons 3 nil)) else nil
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)
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'';
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testListFold = dhallToNix ''
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List/fold
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Natural
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([+1, +2, +3] : List Natural)
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Natural
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'';
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testListLength = dhallToNix "List/length Integer";
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testListHead = dhallToNix "List/head Integer";
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testListLast = dhallToNix "List/last Integer";
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testListIndexed = dhallToNix "List/indexed Integer";
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testListReverse = dhallToNix "List/reverse Integer";
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testOptional = dhallToNix "Optional";
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testOptionalLit = dhallToNix ''
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λ(b : Bool)
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→ if b
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then ([0] : Optional Integer)
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else ([] : Optional Integer)
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'';
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testOptionalFold = dhallToNix ''
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Optional/fold
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Integer
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([1] : Optional Integer)
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Integer
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'';
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testOptionalBuild = dhallToNix ''
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λ(b : Bool)
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→ Optional/build
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Integer
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( λ(optional : Type)
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→ λ(just : Integer → optional)
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→ λ(nothing : optional)
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→ if b then just 1 else nothing
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)
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'';
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testRecord = dhallToNix "{}";
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testRecordLit = dhallToNix "{ foo = 1, bar = True}";
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testUnion = dhallToNix "< Left : Natural | Right : Bool >";
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testUnionLit = dhallToNix "< Left = +2 | Right : Bool >";
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testCombine = dhallToNix ''
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λ(x : { foo : { bar : Text } })
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→ λ(y : { foo : { baz : Bool } })
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→ x ∧ y
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'';
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testCombineTypes = dhallToNix ''
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{ foo : Text } ⩓ { bar : Bool, baz : Integer }
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'';
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testMerge = dhallToNix ''
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λ(r : < Left : Natural | Right : Bool >)
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→ merge
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{ Left = Natural/isZero, Right = λ(b : Bool) → b }
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r : Bool
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'';
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testField = dhallToNix "λ(r : { foo : Bool, bar : Text }) → r.foo";
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testProject = dhallToNix ''
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λ(r : { foo : Bool, bar : Text, baz : Integer }) → r.{ foo, bar }
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'';
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in
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assert (testConst == {});
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assert (testLam true == true);
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assert (testPi == {});
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assert (testApp (b : b) true == true);
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assert (testLet true == true);
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assert (testAnnot == true);
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assert (testBool == {});
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assert (testBoolLit == true);
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assert (testBoolAnd true false == false);
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assert (testBoolOr true false == true);
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assert (testBoolEQ true false == false);
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assert (testBoolNE true false == true);
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assert (testBoolIf true == true);
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assert (testNatural == {});
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assert (testNaturalLit == 123);
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assert (testNaturalFold 123 == 246);
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assert (testNaturalBuild true == 1);
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assert (testNaturalBuild false == 0);
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assert (testNaturalIsZero 0 == true);
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assert (testNaturalIsZero 3 == false);
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assert (testNaturalEven 2 == true);
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assert (testNaturalEven 3 == false);
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assert (testNaturalOdd 2 == false);
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assert (testNaturalToInteger 2 == 2);
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assert (testNaturalShow 2 == "+2");
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assert (testNaturalOdd 3 == true);
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assert (testNaturalPlus 2 3 == 5);
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assert (testNaturalTimes 2 3 == 6);
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assert (testInteger == {});
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assert (testIntegerLit == 123);
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assert (testIntegerShow 2 == "2");
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assert (testDouble == {});
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assert (testTextLit == "ABC");
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assert (testInterpolation == "ABCDEFGHI");
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assert (testTextAppend "ABC" "DEF" == "ABCDEF");
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assert (testList == {});
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assert (testListLit == [1 2 3]);
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assert (testListAppend [1 2 3] [4 5 6] == [1 2 3 4 5 6]);
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assert (testListBuild false == []);
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assert (testListBuild true == [1 2 3]);
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assert (testListFold (x : y: x + y) 0 == 6);
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assert (testListLength [1 2 3] == 3);
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assert (testListLength [] == 0);
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assert (testListHead [1 2 3] == 1);
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assert (testListHead [] == null);
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assert (testListLast [1 2 3] == 3);
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assert (testListLast [] == null);
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assert (testListIndexed [2 3 5] == [
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{ index = 0; value = 2; }
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{ index = 1; value = 3; }
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{ index = 2; value = 5; }
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]);
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assert (testListReverse [1 2 3] == [3 2 1]);
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assert (testOptional {} == {});
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assert (testOptionalLit true == 0);
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assert (testOptionalLit false == null);
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assert (testOptionalFold (n : n) 0 == 1);
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assert (testOptionalBuild true == 1);
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assert (testOptionalBuild false == null);
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assert (testRecord == {});
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assert (testRecordLit == { foo = 1; bar = true; });
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assert (testUnion == {});
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assert (testUnionLit { Left = n : n == 0; Right = b : b; } == false);
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assert ((testCombine { foo.baz = true; } { foo.bar = "ABC"; }) == {
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foo = {
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baz = true;
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bar = "ABC";
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};
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});
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assert (testCombineTypes == {});
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assert (testMerge ({ Left, Right }: Left 2) == false);
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assert (testField { foo = true; bar = "ABC"; } == true);
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assert (testProject { foo = true; bar = "ABC"; baz = 1; } == {
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foo = true;
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bar = "ABC";
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});
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pkgs.stdenv.mkDerivation {
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name = "tests-pass";
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buildCommand = "touch $out";
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};
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}
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