00a749a3a6
toLosslessStringMaybe is not used by anything other than lib/tests, so it can be private to that file. I don't think this function was terribly well thought-through. If people start using it, we will become permanently dependent on the ability to test platforms for equality. It also makes the elaboration process more fragile, because it encourages code outside of nixpkgs to become sensitive to the minute details of how elaboration happens.
106 lines
5.3 KiB
Nix
106 lines
5.3 KiB
Nix
# Run:
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# [nixpkgs]$ nix-instantiate --eval --strict lib/tests/systems.nix
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# Expected output: [], or the failed cases
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#
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# OfBorg runs (approximately) nix-build lib/tests/release.nix
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let
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lib = import ../default.nix;
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mseteq = x: y: {
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expr = lib.sort lib.lessThan x;
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expected = lib.sort lib.lessThan y;
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};
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/*
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Try to convert an elaborated system back to a simple string. If not possible,
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return null. So we have the property:
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sys: _valid_ sys ->
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sys == elaborate (toLosslessStringMaybe sys)
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NOTE: This property is not guaranteed when `sys` was elaborated by a different
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version of Nixpkgs.
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*/
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toLosslessStringMaybe = sys:
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if lib.isString sys then sys
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else if lib.systems.equals sys (lib.systems.elaborate sys.system) then sys.system
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else null;
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in
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lib.runTests (
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# We assert that the new algorithmic way of generating these lists matches the
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# way they were hard-coded before.
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#
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# One might think "if we exhaustively test, what's the point of procedurally
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# calculating the lists anyway?". The answer is one can mindlessly update these
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# tests as new platforms become supported, and then just give the diff a quick
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# sanity check before committing :).
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(with lib.systems.doubles; {
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testall = mseteq all (linux ++ darwin ++ freebsd ++ openbsd ++ netbsd ++ illumos ++ wasi ++ windows ++ embedded ++ mmix ++ js ++ genode ++ redox);
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testarm = mseteq arm [ "armv5tel-linux" "armv6l-linux" "armv6l-netbsd" "armv6l-none" "armv7a-linux" "armv7a-netbsd" "armv7l-linux" "armv7l-netbsd" "arm-none" "armv7a-darwin" ];
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testarmv7 = mseteq armv7 [ "armv7a-darwin" "armv7a-linux" "armv7l-linux" "armv7a-netbsd" "armv7l-netbsd" ];
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testi686 = mseteq i686 [ "i686-linux" "i686-freebsd13" "i686-genode" "i686-netbsd" "i686-openbsd" "i686-cygwin" "i686-windows" "i686-none" "i686-darwin" ];
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testmips = mseteq mips [ "mips-linux" "mips64-linux" "mips64el-linux" "mipsel-linux" "mipsel-netbsd" ];
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testmmix = mseteq mmix [ "mmix-mmixware" ];
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testpower = mseteq power [ "powerpc-netbsd" "powerpc-none" "powerpc64-linux" "powerpc64le-linux" "powerpcle-none" ];
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testriscv = mseteq riscv [ "riscv32-linux" "riscv64-linux" "riscv32-netbsd" "riscv64-netbsd" "riscv32-none" "riscv64-none" ];
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testriscv32 = mseteq riscv32 [ "riscv32-linux" "riscv32-netbsd" "riscv32-none" ];
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testriscv64 = mseteq riscv64 [ "riscv64-linux" "riscv64-netbsd" "riscv64-none" ];
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tests390x = mseteq s390x [ "s390x-linux" "s390x-none" ];
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testx86_64 = mseteq x86_64 [ "x86_64-linux" "x86_64-darwin" "x86_64-freebsd13" "x86_64-genode" "x86_64-redox" "x86_64-openbsd" "x86_64-netbsd" "x86_64-cygwin" "x86_64-solaris" "x86_64-windows" "x86_64-none" ];
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testcygwin = mseteq cygwin [ "i686-cygwin" "x86_64-cygwin" ];
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testdarwin = mseteq darwin [ "x86_64-darwin" "i686-darwin" "aarch64-darwin" "armv7a-darwin" ];
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testfreebsd = mseteq freebsd [ "i686-freebsd13" "x86_64-freebsd13" ];
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testgenode = mseteq genode [ "aarch64-genode" "i686-genode" "x86_64-genode" ];
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testredox = mseteq redox [ "x86_64-redox" ];
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testgnu = mseteq gnu (linux /* ++ kfreebsd ++ ... */);
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testillumos = mseteq illumos [ "x86_64-solaris" ];
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testlinux = mseteq linux [ "aarch64-linux" "armv5tel-linux" "armv6l-linux" "armv7a-linux" "armv7l-linux" "i686-linux" "loongarch64-linux" "m68k-linux" "microblaze-linux" "microblazeel-linux" "mips-linux" "mips64-linux" "mips64el-linux" "mipsel-linux" "powerpc64-linux" "powerpc64le-linux" "riscv32-linux" "riscv64-linux" "s390-linux" "s390x-linux" "x86_64-linux" ];
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testnetbsd = mseteq netbsd [ "aarch64-netbsd" "armv6l-netbsd" "armv7a-netbsd" "armv7l-netbsd" "i686-netbsd" "m68k-netbsd" "mipsel-netbsd" "powerpc-netbsd" "riscv32-netbsd" "riscv64-netbsd" "x86_64-netbsd" ];
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testopenbsd = mseteq openbsd [ "i686-openbsd" "x86_64-openbsd" ];
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testwindows = mseteq windows [ "i686-cygwin" "x86_64-cygwin" "i686-windows" "x86_64-windows" ];
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testunix = mseteq unix (linux ++ darwin ++ freebsd ++ openbsd ++ netbsd ++ illumos ++ cygwin ++ redox);
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})
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// {
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test_equals_example_x86_64-linux = {
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expr = lib.systems.equals (lib.systems.elaborate "x86_64-linux") (lib.systems.elaborate "x86_64-linux");
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expected = true;
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};
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test_toLosslessStringMaybe_example_x86_64-linux = {
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expr = toLosslessStringMaybe (lib.systems.elaborate "x86_64-linux");
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expected = "x86_64-linux";
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};
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test_toLosslessStringMaybe_fail = {
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expr = toLosslessStringMaybe (lib.systems.elaborate "x86_64-linux" // { something = "extra"; });
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expected = null;
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};
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}
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# Generate test cases to assert that a change in any non-function attribute makes a platform unequal
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// lib.concatMapAttrs (platformAttrName: origValue: {
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${"test_equals_unequal_${platformAttrName}"} =
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let modified =
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assert origValue != arbitraryValue;
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lib.systems.elaborate "x86_64-linux" // { ${platformAttrName} = arbitraryValue; };
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arbitraryValue = x: "<<modified>>";
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in {
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expr = lib.systems.equals (lib.systems.elaborate "x86_64-linux") modified;
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expected = {
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# Changes in these attrs are not detectable because they're function.
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# The functions should be derived from the data, so this is not a problem.
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canExecute = null;
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emulator = null;
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emulatorAvailable = null;
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isCompatible = null;
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}?${platformAttrName};
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};
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}) (lib.systems.elaborate "x86_64-linux" /* arbitrary choice, just to get all the elaborated attrNames */)
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)
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