mirror of
https://github.com/NixOS/nix.git
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92 lines
3.9 KiB
Bash
Executable file
92 lines
3.9 KiB
Bash
Executable file
#!/usr/bin/env bash
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source common.sh
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clearStoreIfPossible
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testStdinHeredoc=$(nix eval -f - <<EOF
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{
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bar = 3 + 1;
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foo = 2 + 2;
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}
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EOF
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)
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[[ $testStdinHeredoc == '{ bar = 4; foo = 4; }' ]]
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nix eval --expr 'assert 1 + 2 == 3; true'
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[[ $(nix eval int -f "./eval.nix") == 123 ]]
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[[ $(nix eval str -f "./eval.nix") == '"foo\nbar"' ]]
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[[ $(nix eval str --raw -f "./eval.nix") == $'foo\nbar' ]]
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[[ "$(nix eval attr -f "./eval.nix")" == '{ foo = "bar"; }' ]]
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[[ $(nix eval attr --json -f "./eval.nix") == '{"foo":"bar"}' ]]
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[[ $(nix eval int -f - < "./eval.nix") == 123 ]]
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[[ "$(nix eval --expr '{"assert"=1;bar=2;}')" == '{ "assert" = 1; bar = 2; }' ]]
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# Check if toFile can be utilized during restricted eval
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[[ $(nix eval --restrict-eval --expr 'import (builtins.toFile "source" "42")') == 42 ]]
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nix-instantiate --eval -E 'assert 1 + 2 == 3; true'
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[[ $(nix-instantiate -A int --eval "./eval.nix") == 123 ]]
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[[ $(nix-instantiate -A str --eval "./eval.nix") == '"foo\nbar"' ]]
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[[ $(nix-instantiate -A str --raw --eval "./eval.nix") == $'foo\nbar' ]]
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[[ "$(nix-instantiate -A attr --eval "./eval.nix")" == '{ foo = "bar"; }' ]]
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[[ $(nix-instantiate -A attr --eval --json "./eval.nix") == '{"foo":"bar"}' ]]
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[[ $(nix-instantiate -A int --eval - < "./eval.nix") == 123 ]]
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[[ "$(nix-instantiate --eval -E '{"assert"=1;bar=2;}')" == '{ "assert" = 1; bar = 2; }' ]]
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# Check that symlink cycles don't cause a hang.
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ln -sfn cycle.nix "$TEST_ROOT/cycle.nix"
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(! nix eval --file "$TEST_ROOT/cycle.nix")
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# Test that printing deep data structures produces a controlled error.
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# The expression creates a non-cyclic but infinitely deep structure:
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# f returns immediately with a thunk, so Nix call depth stays at 1,
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# but Printer::print recurses on the C++ stack.
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expectStderr 1 nix eval --expr 'let f = n: { inner = f (n + 1); }; in f 0' --max-call-depth 100 \
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| grepQuiet "stack overflow; max-call-depth exceeded"
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# Same for builtins.toXML
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expectStderr 1 nix eval --expr 'builtins.toXML (let f = n: { inner = f (n + 1); }; in f 0)' --max-call-depth 100 \
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| grepQuiet "stack overflow; max-call-depth exceeded"
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# Same for equality comparison (n is not observable, so structures are equal)
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expectStderr 1 nix eval --expr 'let f = n: { inner = f (n + 1); }; in f 0 == f 1' --max-call-depth 100 \
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| grepQuiet "stack overflow; max-call-depth exceeded"
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# Same for assert with equality (uses assertEqValues)
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expectStderr 1 nix eval --expr 'let f = n: { inner = f (n + 1); }; in assert f 0 == f 1; true' --max-call-depth 100 \
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| grepQuiet "stack overflow; max-call-depth exceeded"
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# Same for string coercion with __toString
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# shellcheck disable=SC2016
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expectStderr 1 nix eval --expr 'let f = n: { __toString = _: f (n + 1); }; in "${f 0}"' --max-call-depth 100 \
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| grepQuiet "stack overflow; max-call-depth exceeded"
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# --file and --pure-eval don't mix.
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expectStderr 1 nix eval --pure-eval --file "$TEST_ROOT/cycle.nix" | grepQuiet "not compatible"
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# Check that relative symlinks are resolved correctly.
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mkdir -p "$TEST_ROOT/xyzzy" "$TEST_ROOT/foo"
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ln -sfn ../xyzzy "$TEST_ROOT/foo/bar"
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printf 123 > "$TEST_ROOT/xyzzy/default.nix"
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[[ $(nix eval --impure --expr "import $TEST_ROOT/foo/bar") = 123 ]]
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# Test --arg-from-file.
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[[ "$(nix eval --raw --arg-from-file foo "${config_nix}" --expr '{ foo }: { inherit foo; }' foo)" = "$(cat "${config_nix}")" ]]
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# Check that special(-ish) files are drained.
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if [[ -e /proc/version ]]; then
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[[ "$(nix eval --raw --arg-from-file foo /proc/version --expr '{ foo }: { inherit foo; }' foo)" = "$(cat /proc/version)" ]]
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fi
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# Test --arg-from-stdin.
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[[ "$(echo bla | nix eval --raw --arg-from-stdin foo --expr '{ foo }: { inherit foo; }' foo)" = bla ]]
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# Test that unknown settings are warned about
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out="$(expectStderr 0 nix eval --option foobar baz --expr '""' --raw)"
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[[ "$(echo "$out" | grep -c foobar)" = 1 ]]
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# Test flag alias
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out="$(nix eval --expr '{}' --build-cores 1)"
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[[ "$(echo "$out" | wc -l)" = 1 ]]
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