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add tests for new help stuff

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Josh Wolfe 2025-08-30 23:46:10 -04:00
parent 69c1dbc9ff
commit 8de26d5382
1 changed files with 40 additions and 0 deletions
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40
lib/std/cli.zig
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@ -1532,3 +1532,43 @@ test "custom help" {
try testing.expectError(error.Help, parseSlice(Args, allocator, &[_][]const u8{"--help"}, options));
try testing.expectEqualStrings(Args.help, aw.written());
}
test "description" {
var arena: std.heap.ArenaAllocator = .init(testing.allocator);
defer arena.deinit();
const allocator = arena.allocator();
var aw: Writer.Allocating = .init(allocator);
const options = Options{ .prog = "unused-prog", .writer = &aw.writer };
const Args = struct {
pub const description =
\\This is a description
;
};
try testing.expectError(error.Help, parseSlice(Args, allocator, &[_][]const u8{"--help"}, options));
try testing.expect(mem.indexOf(u8, aw.written(), Args.description) != null);
}
test "field help" {
var arena: std.heap.ArenaAllocator = .init(testing.allocator);
defer arena.deinit();
const allocator = arena.allocator();
var aw: Writer.Allocating = .init(allocator);
const options = Options{ .prog = "unused-prog", .writer = &aw.writer };
const Args = struct {
named: struct {
output: []const u8,
pub const output_help = "help for output";
},
positional: struct {
args: []const []const u8 = &.{},
pub const args_help = "help for args";
},
};
try testing.expectError(error.Help, parseSlice(Args, allocator, &[_][]const u8{"--help"}, options));
try testing.expect(mem.indexOf(u8, aw.written(), @FieldType(Args, "named").output_help) != null);
try testing.expect(mem.indexOf(u8, aw.written(), @FieldType(Args, "positional").args_help) != null);
}