commit 3cc2e86bab4dcfa1abc7c835fae6336b068cd77e · pyrox.dev/nixpkgs

+39 -23

pkgs/build-support/testers/default.nix

···

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       { pkgs, lib, callPackage, runCommand }:

     

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       {

     

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         /* Checks that two packages produce the exact same build instructions.

     

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            This can be used to make sure that a certain difference of configuration,

     

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            such as the presence of an overlay does not cause a cache miss.

     

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            When the derivations are equal, the return value is an empty file.

     

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            Otherwise, the build log explains the difference via `nix-diff`.

     

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            Example:

     

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                testEqualDerivation

     

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                  "The hello package must stay the same when enabling checks."

     

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                  hello

     

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                  (hello.overrideAttrs(o: { doCheck = true; }))

     

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         */

     

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         testEqualDerivation = callPackage ./test-equal-derivation.nix { };

     

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         /* Checks the command output contains the specified version

     

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          *

     

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          * Although simplistic, this test assures that the main program

     

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          * can run. While there's no substitute for a real test case,

     

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          * it does catch dynamic linking errors and such. It also provides

     

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          * some protection against accidentally building the wrong version,

     

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          * for example when using an 'old' hash in a fixed-output derivation.

     

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          *

     

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          * Examples:

     

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          *

     

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          * passthru.tests.version = testVersion { package = hello; };

     

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          *

     

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          * passthru.tests.version = testVersion {

     

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          *   package = seaweedfs;

     

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          *   command = "weed version";

     

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          * };

     

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          *

     

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          * passthru.tests.version = testVersion {

     

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          *   package = key;

     

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          *   command = "KeY --help";

     

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          *   # Wrong '2.5' version in the code. Drop on next version.

     

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          *   version = "2.5";

     

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          * };

     

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          */

     

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       +
       

     

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            Although simplistic, this test assures that the main program

     

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            can run. While there's no substitute for a real test case,

     

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            it does catch dynamic linking errors and such. It also provides

     

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            some protection against accidentally building the wrong version,

     

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            for example when using an 'old' hash in a fixed-output derivation.

     

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            Examples:

     

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              passthru.tests.version = testVersion { package = hello; };

     

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              passthru.tests.version = testVersion {

     

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                package = seaweedfs;

     

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                command = "weed version";

     

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              };

     

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              passthru.tests.version = testVersion {

     

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                package = key;

     

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                command = "KeY --help";

     

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                # Wrong '2.5' version in the code. Drop on next version.

     

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                version = "2.5";

     

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              };

     

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         */

     

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         testVersion =

     

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           { package,

     

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             command ? "${package.meta.mainProgram or package.pname or package.name} --version",

-17

pkgs/build-support/testers/test-equal-derivation.nix

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       { lib, runCommand, emptyFile, nix-diff }:

     

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       /*

     

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         Checks that two packages produce the exact same build instructions.

     

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         This can be used to make sure that a certain difference of configuration,

     

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         such as the presence of an overlay does not cause a cache miss.

     

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         When the derivations are equal, the return value is an empty file.

     

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         Otherwise, the build log explains the difference via `nix-diff`.

     

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         Example:

     

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             testEqualDerivation

     

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               "The hello package must stay the same when enabling checks."

     

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               hello

     

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               (hello.overrideAttrs(o: { doCheck = true; }))

     

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       */

     

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       assertion: a: b:

     

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       let

     

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         drvA = builtins.unsafeDiscardOutputDependency a.drvPath or (throw "testEqualDerivation second argument must be a package");