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standalone posix test for env vars

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This commit is contained in:
Pat Tullmann 2025-09-08 22:08:04 -07:00
parent 020eb622ee
commit aa1d2adffc
3 changed files with 40 additions and 19 deletions
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18
lib/std/posix/test.zig
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@ -607,24 +607,6 @@ test "mmap" {
}
}
test "getenv" {
if (native_os == .wasi and !builtin.link_libc) {
// std.posix.getenv is not supported on WASI due to the need of allocation
return error.SkipZigTest;
}
if (native_os == .windows) {
try expect(std.process.getenvW(&[_:0]u16{ 'B', 'O', 'G', 'U', 'S', 0x11, 0x22, 0x33, 0x44, 0x55 }) == null);
} else {
try expect(posix.getenv("") == null);
try expect(posix.getenv("BOGUSDOESNOTEXISTENVVAR") == null);
if (builtin.link_libc) {
try testing.expectEqualStrings(posix.getenv("USER") orelse "", mem.span(std.c.getenv("USER") orelse ""));
}
try expect(posix.getenvZ("BOGUSDOESNOTEXISTENVVAR") == null);
}
}
test "fcntl" {
if (native_os == .windows or native_os == .wasi)
return error.SkipZigTest;

8
test/standalone/posix/build.zig
View file

@ -3,6 +3,7 @@ const builtin = @import("builtin");
const Case = struct {
src_path: []const u8,
set_env_vars: bool = false,
};
const cases = [_]Case{
@ -11,6 +12,7 @@ const cases = [_]Case{
},
.{
.src_path = "getenv.zig",
.set_env_vars = true,
},
.{
.src_path = "sigaction.zig",
@ -68,5 +70,11 @@ fn run_exe(b: *std.Build, optimize: std.builtin.OptimizeMode, case: *const Case,
const run_cmd = b.addRunArtifact(exe);
if (case.set_env_vars) {
run_cmd.setEnvironmentVariable("ZIG_TEST_POSIX_1EQ", "test=variable");
run_cmd.setEnvironmentVariable("ZIG_TEST_POSIX_3EQ", "=test=variable=");
run_cmd.setEnvironmentVariable("ZIG_TEST_POSIX_EMPTY", "");
}
return run_cmd;
}

33
test/standalone/posix/getenv.zig
View file

@ -1 +1,32 @@
pub fn main() !void {}
// test getting environment variables
const std = @import("std");
const builtin = @import("builtin");
pub fn main() !void {
if (builtin.target.os.tag == .windows) {
return; // Windows env strings are WTF-16, so not supported by Zig's std.posix.getenv()
}
if (builtin.target.os.tag == .wasi and !builtin.link_libc) {
return; // std.posix.getenv is not supported on WASI due to the need of allocation
}
// Test some unset env vars:
try std.testing.expectEqual(std.posix.getenv(""), null);
try std.testing.expectEqual(std.posix.getenv("BOGUSDOESNOTEXISTENVVAR"), null);
try std.testing.expectEqual(std.posix.getenvZ("BOGUSDOESNOTEXISTENVVAR"), null);
if (builtin.link_libc) {
// Test if USER matches what C library sees
const expected = std.mem.span(std.c.getenv("USER") orelse "");
const actual = std.posix.getenv("USER") orelse "";
try std.testing.expectEqualStrings(expected, actual);
}
// env vars set by our build.zig run step:
try std.testing.expectEqualStrings("", std.posix.getenv("ZIG_TEST_POSIX_EMPTY") orelse "invalid");
try std.testing.expectEqualStrings("test=variable", std.posix.getenv("ZIG_TEST_POSIX_1EQ") orelse "invalid");
try std.testing.expectEqualStrings("=test=variable=", std.posix.getenv("ZIG_TEST_POSIX_3EQ") orelse "invalid");
}