mirror of
https://github.com/privatevoid-net/nix-super.git
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321 lines
8.2 KiB
Bash
Executable file
321 lines
8.2 KiB
Bash
Executable file
#!/usr/bin/env bash
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source common.sh
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source characterisation/framework.sh
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testDir="$PWD"
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cd "$TEST_ROOT"
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replCmds="
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simple = 1
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simple = import $testDir/simple.nix
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:bl simple
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:log simple
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"
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replFailingCmds="
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failing = import $testDir/simple-failing.nix
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:b failing
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:log failing
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"
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replUndefinedVariable="
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import $testDir/undefined-variable.nix
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"
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TODO_NixOS
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testRepl () {
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local nixArgs
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nixArgs=("$@")
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rm -rf repl-result-out || true # cleanup from other runs backed by a foreign nix store
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local replOutput
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replOutput="$(nix repl "${nixArgs[@]}" <<< "$replCmds")"
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echo "$replOutput"
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local outPath
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outPath=$(echo "$replOutput" |&
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grep -o -E "$NIX_STORE_DIR/\w*-simple")
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nix path-info "${nixArgs[@]}" "$outPath"
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[ "$(realpath ./repl-result-out)" == "$outPath" ] || fail "nix repl :bl doesn't make a symlink"
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# run it again without checking the output to ensure the previously created symlink gets overwritten
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nix repl "${nixArgs[@]}" <<< "$replCmds" || fail "nix repl does not work twice with the same inputs"
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# simple.nix prints a PATH during build
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echo "$replOutput" | grepQuiet -s 'PATH=' || fail "nix repl :log doesn't output logs"
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replOutput="$(nix repl "${nixArgs[@]}" <<< "$replFailingCmds" 2>&1)"
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echo "$replOutput"
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echo "$replOutput" | grepQuiet -s 'This should fail' \
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|| fail "nix repl :log doesn't output logs for a failed derivation"
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replOutput="$(nix repl --show-trace "${nixArgs[@]}" <<< "$replUndefinedVariable" 2>&1)"
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echo "$replOutput"
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echo "$replOutput" | grepQuiet -s "while evaluating the file" \
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|| fail "nix repl --show-trace doesn't show the trace"
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nix repl "${nixArgs[@]}" --option pure-eval true 2>&1 <<< "builtins.currentSystem" \
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| grep "attribute 'currentSystem' missing"
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nix repl "${nixArgs[@]}" 2>&1 <<< "builtins.currentSystem" \
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| grep "$(nix-instantiate --eval -E 'builtins.currentSystem')"
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expectStderr 1 nix repl "${testDir}/simple.nix" \
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| grepQuiet -s "error: path '$testDir/simple.nix' is not a flake"
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}
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# Simple test, try building a drv
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testRepl
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# Same thing (kind-of), but with a remote store.
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testRepl --store "$TEST_ROOT/store?real=$NIX_STORE_DIR"
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# Remove ANSI escape sequences. They can prevent grep from finding a match.
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stripColors () {
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sed -E 's/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g'
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}
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testReplResponseGeneral () {
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local grepMode commands expectedResponse response
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grepMode="$1"; shift
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commands="$1"; shift
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# Expected response can contain newlines.
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# grep can't handle multiline patterns, so replace newlines with TEST_NEWLINE
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# in both expectedResponse and response.
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# awk ORS always adds a trailing record separator, so we strip it with sed.
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expectedResponse="$(printf '%s' "$1" | awk 1 ORS=TEST_NEWLINE | sed 's/TEST_NEWLINE$//')"; shift
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# We don't need to strip trailing record separator here, since extra data is ok.
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response="$(nix repl "$@" <<< "$commands" 2>&1 | stripColors | awk 1 ORS=TEST_NEWLINE)"
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printf '%s' "$response" | grepQuiet "$grepMode" -s "$expectedResponse" \
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|| fail "$(echo "repl command set:
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$commands
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does not respond with:
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---
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$expectedResponse
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---
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but with:
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---
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$response
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---
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" | sed 's/TEST_NEWLINE/\n/g')"
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}
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testReplResponse () {
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testReplResponseGeneral --basic-regexp "$@"
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}
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testReplResponseNoRegex () {
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testReplResponseGeneral --fixed-strings "$@"
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}
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# :a uses the newest version of a symbol
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#
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# shellcheck disable=SC2016
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testReplResponse '
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:a { a = "1"; }
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:a { a = "2"; }
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"result: ${a}"
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' "result: 2"
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# check dollar escaping https://github.com/NixOS/nix/issues/4909
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# note the escaped \,
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# \\
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# because the second argument is a regex
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#
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# shellcheck disable=SC2016
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testReplResponseNoRegex '
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"$" + "{hi}"
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' '"\${hi}"'
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testReplResponse '
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drvPath
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' '".*-simple.drv"' \
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--file "$testDir/simple.nix"
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testReplResponse '
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drvPath
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' '".*-simple.drv"' \
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--file "$testDir/simple.nix" --experimental-features 'ca-derivations'
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mkdir -p flake && cat <<EOF > flake/flake.nix
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{
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outputs = { self }: {
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foo = 1;
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bar.baz = 2;
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changingThing = "beforeChange";
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};
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}
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EOF
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testReplResponse '
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foo + baz
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' "3" \
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./flake ./flake\#bar --experimental-features 'flakes'
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# Test the `:reload` mechansim with flakes:
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# - Eval `./flake#changingThing`
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# - Modify the flake
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# - Re-eval it
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# - Check that the result has changed
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replResult=$( (
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echo "changingThing"
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sleep 1 # Leave the repl the time to eval 'foo'
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sed -i 's/beforeChange/afterChange/' flake/flake.nix
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echo ":reload"
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echo "changingThing"
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) | nix repl ./flake --experimental-features 'flakes')
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echo "$replResult" | grepQuiet -s beforeChange
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echo "$replResult" | grepQuiet -s afterChange
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# Test recursive printing and formatting
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# Normal output should print attributes in lexicographical order non-recursively
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testReplResponseNoRegex '
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{ a = { b = 2; }; l = [ 1 2 3 ]; s = "string"; n = 1234; x = rec { y = { z = { inherit y; }; }; }; }
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' \
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'{
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a = { ... };
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l = [ ... ];
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n = 1234;
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s = "string";
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x = { ... };
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}
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'
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# Same for lists, but order is preserved
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testReplResponseNoRegex '
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[ 42 1 "thingy" ({ a = 1; }) ([ 1 2 3 ]) ]
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' \
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'[
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42
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1
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"thingy"
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{ ... }
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[ ... ]
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]
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'
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# Same for let expressions
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testReplResponseNoRegex '
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let x = { y = { a = 1; }; inherit x; }; in x
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' \
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'{
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x = «repeated»;
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y = { ... };
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}
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'
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# The :p command should recursively print sets, but prevent infinite recursion
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testReplResponseNoRegex '
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:p { a = { b = 2; }; s = "string"; n = 1234; x = rec { y = { z = { inherit y; }; }; }; }
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' \
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'{
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a = { b = 2; };
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n = 1234;
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s = "string";
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x = {
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y = {
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z = {
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y = «repeated»;
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};
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};
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};
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}
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'
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# Same for lists
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testReplResponseNoRegex '
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:p [ 42 1 "thingy" (rec { a = 1; b = { inherit a; inherit b; }; }) ([ 1 2 3 ]) ]
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' \
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'[
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42
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1
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"thingy"
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{
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a = 1;
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b = {
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a = 1;
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b = «repeated»;
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};
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}
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[
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1
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2
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3
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]
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]
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'
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# Same for let expressions
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testReplResponseNoRegex '
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:p let x = { y = { a = 1; }; inherit x; }; in x
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' \
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'{
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x = «repeated»;
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y = { a = 1; };
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}
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'
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# TODO: move init to characterisation/framework.sh
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badDiff=0
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badExitCode=0
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nixVersion="$(nix eval --impure --raw --expr 'builtins.nixVersion' --extra-experimental-features nix-command)"
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# TODO: write a repl interacter for testing. Papering over the differences between readline / editline and between platforms is a pain.
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# I couldn't get readline and editline to agree on the newline before the prompt,
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# so let's just force it to be one empty line.
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stripEmptyLinesBeforePrompt() {
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# --null-data: treat input as NUL-terminated instead of newline-terminated
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sed --null-data 's/\n\n*nix-repl>/\n\nnix-repl>/g'
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}
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# We don't get a final prompt on darwin, so we strip this as well.
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stripFinalPrompt() {
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# Strip the final prompt and/or any trailing spaces
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sed --null-data \
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-e 's/\(.*[^\n]\)\n\n*nix-repl>[ \n]*$/\1/' \
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-e 's/[ \n]*$/\n/'
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}
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runRepl () {
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# That is right, we are also filtering out the testdir _without underscores_.
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# This is crazy, but without it, GHA will fail to run the tests, showing paths
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# _with_ underscores in the set -x log, but _without_ underscores in the
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# supposed nix repl output. I have looked in a number of places, but I cannot
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# find a mechanism that could cause this to happen.
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local testDirNoUnderscores
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testDirNoUnderscores="${testDir//_/}"
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# TODO: pass arguments to nix repl; see lang.sh
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_NIX_TEST_RAW_MARKDOWN=1 \
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_NIX_TEST_REPL_ECHO=1 \
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nix repl 2>&1 \
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| stripColors \
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| tr -d '\0' \
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| stripEmptyLinesBeforePrompt \
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| stripFinalPrompt \
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| sed \
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-e "s@$testDir@/path/to/tests/functional@g" \
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-e "s@$testDirNoUnderscores@/path/to/tests/functional@g" \
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-e "s@$nixVersion@<nix version>@g" \
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-e "s@Added [0-9]* variables@Added <number omitted> variables@g" \
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| grep -vF $'warning: you don\'t have Internet access; disabling some network-dependent features' \
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;
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}
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for test in $(cd "$testDir/repl"; echo *.in); do
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test="$(basename "$test" .in)"
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in="$testDir/repl/$test.in"
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actual="$testDir/repl/$test.actual"
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expected="$testDir/repl/$test.expected"
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(cd "$testDir/repl"; set +x; runRepl 2>&1) < "$in" > "$actual" || {
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echo "FAIL: $test (exit code $?)" >&2
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badExitCode=1
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}
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diffAndAcceptInner "$test" "$actual" "$expected"
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done
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characterisationTestExit
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