pyrox.dev
1#!/usr/bin/env bash
2
3# Tests lib/filesystem.nix
4# Run:
5# [nixpkgs]$ lib/tests/filesystem.sh
6# or:
7# [nixpkgs]$ nix-build lib/tests/release.nix
8
9set -euo pipefail
10shopt -s inherit_errexit
11
12# Use
13# || die
14die() {
15 echo >&2 "test case failed: " "$@"
16 exit 1
17}
18
19if test -n "${TEST_LIB:-}"; then
20 NIX_PATH=nixpkgs="$(dirname "$TEST_LIB")"
21else
22 NIX_PATH=nixpkgs="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.."; pwd)"
23fi
24export NIX_PATH
25
26work="$(mktemp -d)"
27clean_up() {
28 rm -rf "$work"
29}
30trap clean_up EXIT
31cd "$work"
32
33mkdir directory
34touch regular
35ln -s target symlink
36mkfifo fifo
37
38expectSuccess() {
39 local expr=$1
40 local expectedResultRegex=$2
41 if ! result=$(nix-instantiate --eval --strict --json \
42 --expr "with (import <nixpkgs/lib>).filesystem; $expr"); then
43 die "$expr failed to evaluate, but it was expected to succeed"
44 fi
45 if [[ ! "$result" =~ $expectedResultRegex ]]; then
46 die "$expr == $result, but $expectedResultRegex was expected"
47 fi
48}
49
50expectFailure() {
51 local expr=$1
52 local expectedErrorRegex=$2
53 if result=$(nix-instantiate --eval --strict --json 2>"$work/stderr" \
54 --expr "with (import <nixpkgs/lib>).filesystem; $expr"); then
55 die "$expr evaluated successfully to $result, but it was expected to fail"
56 fi
57 if [[ ! "$(<"$work/stderr")" =~ $expectedErrorRegex ]]; then
58 die "Error was $(<"$work/stderr"), but $expectedErrorRegex was expected"
59 fi
60}
61
62expectSuccess "pathType /." '"directory"'
63expectSuccess "pathType $PWD/directory" '"directory"'
64expectSuccess "pathType $PWD/regular" '"regular"'
65expectSuccess "pathType $PWD/symlink" '"symlink"'
66expectSuccess "pathType $PWD/fifo" '"unknown"'
67
68# Only check error message when a Nixpkgs-specified error is thrown,
69# which is only the case when `readFileType` is not available
70# and the fallback implementation needs to be used.
71if [[ "$(nix-instantiate --eval --expr 'builtins ? readFileType')" == false ]]; then
72 expectFailure "pathType $PWD/non-existent" \
73 "error: evaluation aborted with the following error message: 'lib.filesystem.pathType: Path $PWD/non-existent does not exist.'"
74fi
75
76expectSuccess "pathIsDirectory /." "true"
77expectSuccess "pathIsDirectory $PWD/directory" "true"
78expectSuccess "pathIsDirectory $PWD/regular" "false"
79expectSuccess "pathIsDirectory $PWD/symlink" "false"
80expectSuccess "pathIsDirectory $PWD/fifo" "false"
81expectSuccess "pathIsDirectory $PWD/non-existent" "false"
82
83expectSuccess "pathIsRegularFile /." "false"
84expectSuccess "pathIsRegularFile $PWD/directory" "false"
85expectSuccess "pathIsRegularFile $PWD/regular" "true"
86expectSuccess "pathIsRegularFile $PWD/symlink" "false"
87expectSuccess "pathIsRegularFile $PWD/fifo" "false"
88expectSuccess "pathIsRegularFile $PWD/non-existent" "false"
89
90echo >&2 tests ok