mirror of
https://github.com/NixOS/nix
synced 2025-06-25 06:31:14 +02:00
84 lines
3.1 KiB
Bash
Executable file
84 lines
3.1 KiB
Bash
Executable file
#!/usr/bin/env bash
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source ./common.sh
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requireGit
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flake1Dir="$TEST_ROOT/eval-cache-flake"
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createGitRepo "$flake1Dir" ""
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cp ../simple.nix ../simple.builder.sh "${config_nix}" "$flake1Dir/"
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git -C "$flake1Dir" add simple.nix simple.builder.sh config.nix
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git -C "$flake1Dir" commit -m "config.nix"
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cat >"$flake1Dir/flake.nix" <<EOF
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{
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description = "Fnord";
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outputs = { self }: let inherit (import ./config.nix) mkDerivation; in {
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foo.bar = throw "breaks";
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drv = mkDerivation {
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name = "build";
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buildCommand = ''
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echo true > \$out
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'';
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};
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stack-depth =
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let
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f = x: if x == 0 then true else f (x - 1);
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in
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assert (f 100); self.drv;
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ifd = assert (import self.drv); self.drv;
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artificialTwoDifferentThrows = builtins.testThrowErrorMaybe (throw "real throw");
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artificialThrowOrDrv = builtins.testThrowErrorMaybe self.drv;
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};
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}
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EOF
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git -C "$flake1Dir" add flake.nix
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git -C "$flake1Dir" commit -m "Init"
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expect 1 nix build "$flake1Dir#foo.bar" 2>&1 | grepQuiet 'error: breaks'
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expect 1 nix build "$flake1Dir#foo.bar" 2>&1 | grepQuiet 'error: breaks'
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# Stack overflow error must not be cached
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expect 1 nix build --max-call-depth 50 "$flake1Dir#stack-depth" 2>&1 \
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| grepQuiet 'error: stack overflow; max-call-depth exceeded'
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# If the SO is cached, the following invocation will produce a cached failure; we expect it to succeed
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nix build --no-link "$flake1Dir#stack-depth"
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# Conditional error should not be cached
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expect 1 nix build "$flake1Dir#ifd" --option allow-import-from-derivation false 2>&1 \
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| grepQuiet 'error: cannot build .* during evaluation because the option '\''allow-import-from-derivation'\'' is disabled'
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nix build --no-link "$flake1Dir#ifd"
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# make sure this builtin does not reach production
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nix eval --expr 'assert ! (builtins ? testThrowErrorMaybe); null'
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# and that it does reach the testing environment
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export _NIX_TEST_PRIMOPS=1
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nix eval --expr 'assert (builtins.testThrowErrorMaybe true); null'
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# and that it works
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_NIX_TEST_DO_THROW_ERROR=1 expect 1 nix eval --expr 'builtins.testThrowErrorMaybe true' 2>&1 \
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| grepQuiet 'this is a dummy error'
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# make sure error details do not get cached
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_NIX_TEST_DO_THROW_ERROR=1 expect 1 nix eval "$flake1Dir#artificialTwoDifferentThrows" 2>&1 \
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| grepQuiet "this is a dummy error"
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expect 1 nix eval "$flake1Dir#artificialTwoDifferentThrows" 2>&1 \
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| grepQuiet "real throw"
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# If a cached error cannot be reproduced, do not continue as usual.
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# Instead, throw an error.
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#
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# To be clear, the following test case should never occur in production.
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# But it might, due to an implementation error in Nix or plugins.
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# create an artificial exception cache entry
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_NIX_TEST_DO_THROW_ERROR=1 expect 1 nix build "$flake1Dir#artificialThrowOrDrv" 2>&1 \
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| grepQuiet "this is a dummy error"
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# Invoke again but without the artificial throwing of an exception
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expect 1 nix build "$flake1Dir#artificialThrowOrDrv" 2>&1 \
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| grepQuiet "unexpected evaluation success despite the existence of a cached error. This should not happen. It is a bug in the implementation of Nix or a plugin. A transient exception should not have been cached."
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