68c81c7375
I think it is bad for these reasons when `tests/` contains a mix of functional and integration tests - Concepts is harder to understand, the documentation makes a good unit vs functional vs integration distinction, but when the integration tests are just two subdirs within `tests/` this is not clear. - Source filtering in the `flake.nix` is more complex. We need to filter out some of the dirs from `tests/`, rather than simply pick the dirs we want and take all of them. This is a good sign the structure of what we are trying to do is not matching the structure of the files. With this change we have a clean: ```shell-session $ git show 'HEAD:tests' tree HEAD:tests functional/ installer/ nixos/ ```
57 lines
1.3 KiB
Bash
57 lines
1.3 KiB
Bash
source common.sh
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# First, test that -jN performs builds in parallel.
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echo "testing nix-build -j..."
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clearStore
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rm -f $_NIX_TEST_SHARED.cur $_NIX_TEST_SHARED.max
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outPath=$(nix-build -j10000 parallel.nix --no-out-link)
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echo "output path is $outPath"
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text=$(cat "$outPath")
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if test "$text" != "abacade"; then exit 1; fi
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if test "$(cat $_NIX_TEST_SHARED.cur)" != 0; then fail "wrong current process count"; fi
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if test "$(cat $_NIX_TEST_SHARED.max)" != 3; then fail "not enough parallelism"; fi
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# Second, test that parallel invocations of nix-build perform builds
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# in parallel, and don't block waiting on locks held by the others.
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echo "testing multiple nix-build -j1..."
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clearStore
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rm -f $_NIX_TEST_SHARED.cur $_NIX_TEST_SHARED.max
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drvPath=$(nix-instantiate parallel.nix --argstr sleepTime 15)
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cmd="nix-store -j1 -r $drvPath"
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$cmd &
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pid1=$!
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echo "pid 1 is $pid1"
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$cmd &
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pid2=$!
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echo "pid 2 is $pid2"
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$cmd &
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pid3=$!
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echo "pid 3 is $pid3"
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$cmd &
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pid4=$!
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echo "pid 4 is $pid4"
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wait $pid1 || fail "instance 1 failed: $?"
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wait $pid2 || fail "instance 2 failed: $?"
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wait $pid3 || fail "instance 3 failed: $?"
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wait $pid4 || fail "instance 4 failed: $?"
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if test "$(cat $_NIX_TEST_SHARED.cur)" != 0; then fail "wrong current process count"; fi
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if test "$(cat $_NIX_TEST_SHARED.max)" != 3; then fail "not enough parallelism"; fi
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