a3a51763f9
This helps us instruct rustc to build tests instead of binaries. The actual build will then ONLY produce test executables. This is a first step towards having rust crate tests within nixpkgs. We default back to only a single output in test cases since that is the only reasonable thing to do here. Producing libraries or binaries in addition to tests would theoretically be feasible but usually generates different dependency trees. It is very common to have some libraries in `[dev-depdendencies]` within Cargo.toml just for your tests. To not start mixing things up going with a dedicated derivation for the test build sounds like the best choice for now. To use this you must provide a proper test dependency chain to `buildRustCrate` (as you would usually do with your non-test inputs). And then set the `buildTests` attribute to `true`. The derivation will then contain all tests that were built in `$out/tests`. All common test patterns and directories should be supported and tested by this change. Below is an example how you would run a single test from the derivation. This commit contains some more examples in the `buildRustCrateTests` attribute set that might be helpful. ``` let drv = buildRustCrate { … buildTests true; }; in runCommand "test-my-crate" {} '' touch $out exec ${drv}/tests/my-test '' ```
51 lines
1.4 KiB
Nix
51 lines
1.4 KiB
Nix
{ stdenv }:
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crateName: metadata: buildTests:
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if !buildTests then ''
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runHook preInstall
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# always create $out even if we do not have binaries. We are detecting binary targets during compilation, if those are missing there is no way to only have $lib
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mkdir $out
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if [[ -s target/env ]]; then
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mkdir -p $lib
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cp target/env $lib/env
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fi
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if [[ -s target/link.final ]]; then
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mkdir -p $lib/lib
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cp target/link.final $lib/lib/link
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fi
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if [[ "$(ls -A target/lib)" ]]; then
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mkdir -p $lib/lib
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cp target/lib/* $lib/lib #*/
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for library in $lib/lib/*.so $lib/lib/*.dylib; do #*/
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ln -s $library $(echo $library | sed -e "s/-${metadata}//")
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done
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fi
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if [[ "$(ls -A target/build)" ]]; then # */
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mkdir -p $lib/lib
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cp -r target/build/* $lib/lib # */
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fi
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if [[ -d target/bin ]]; then
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if [[ "$(ls -A target/bin)" ]]; then
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mkdir -p $out/bin
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cp -P target/bin/* $out/bin # */
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fi
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fi
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runHook postInstall
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'' else
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# for tests we just put them all in the output. No execution.
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''
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runHook preInstall
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mkdir -p $out/tests
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if [ -e target/bin ]; then
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find target/bin/ -type f -executable -exec cp {} $out/tests \;
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fi
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if [ -e target/lib ]; then
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find target/lib/ -type f \! -name '*.rlib' \
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-a \! -name '*${stdenv.hostPlatform.extensions.sharedLibrary}' \
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-a \! -name '*.d' \
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-executable \
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-print0 | xargs --no-run-if-empty --null install --target $out/tests;
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fi
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runHook postInstall
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''
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