d1a4769b38
Except: - Instances in documentation, because people in older versions can't switch to nixfmt yet due to it having pointed to nixfmt-classic before - In code that runs based on a CI Nixpkgs version, which is also a bit older still - In update script shebangs, because many of them don't pin Nixpkgs, and run with whatever is in NIX_PATH (and it's not easy to fix this, see https://github.com/NixOS/nixpkgs/issues/425551)
111 lines
2.4 KiB
Nix
111 lines
2.4 KiB
Nix
{
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lib,
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runCommand,
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testers,
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treefmt,
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nixfmt,
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}:
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let
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inherit (treefmt) buildConfig withConfig;
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testEqualContents =
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args:
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testers.testEqualContents (
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args
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// lib.optionalAttrs (builtins.isString args.expected) {
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expected = builtins.toFile "expected" args.expected;
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}
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);
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nixfmtExampleConfig = {
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on-unmatched = "info";
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tree-root-file = ".git/index";
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formatter.nixfmt = {
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command = "nixfmt";
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includes = [ "*.nix" ];
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};
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};
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nixfmtExamplePackage = withConfig {
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settings = nixfmtExampleConfig;
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runtimeInputs = [ nixfmt ];
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};
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in
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{
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buildConfigEmpty = testEqualContents {
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assertion = "`buildConfig { }` builds an empty config file";
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actual = buildConfig { };
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expected = "";
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};
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buildConfigExample = testEqualContents {
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assertion = "`buildConfig` builds the example config";
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actual = buildConfig nixfmtExampleConfig;
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expected = ''
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on-unmatched = "info"
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tree-root-file = ".git/index"
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[formatter.nixfmt]
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command = "nixfmt"
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includes = ["*.nix"]
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'';
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};
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buildConfigModules = testEqualContents {
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assertion = "`buildConfig` evaluates modules to build a config";
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actual = buildConfig [
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nixfmtExampleConfig
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{ tree-root-file = lib.mkForce "overridden"; }
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];
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expected = ''
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on-unmatched = "info"
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tree-root-file = "overridden"
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[formatter.nixfmt]
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command = "nixfmt"
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includes = ["*.nix"]
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'';
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};
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runNixfmtExample =
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runCommand "run-nixfmt-example"
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{
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nativeBuildInputs = [ nixfmtExamplePackage ];
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passAsFile = [
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"input"
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"expected"
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];
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input = ''
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{
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foo="bar";
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attrs={};
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list=[];
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}
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'';
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expected = ''
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{
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foo = "bar";
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attrs = { };
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list = [ ];
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}
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'';
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}
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''
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export XDG_CACHE_HOME=$(mktemp -d)
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# The example config assumes the tree root has a .git/index file
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mkdir .git && touch .git/index
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# Copy the input file, then format it using the wrapped treefmt
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cp $inputPath input.nix
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treefmt
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# Assert that input.nix now matches expected
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if diff -u $expectedPath input.nix; then
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touch $out
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else
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echo
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echo "treefmt did not format input.nix as expected"
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exit 1
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fi
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'';
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}
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