# Copyright (c) 2024 DTB <trinity@trinity.moe>
# Copyright (c) 2024 Emma Tebibyte <emma@tebibyte.media>
# SPDX-License-Identifier: FSFAP
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice and this
# notice are preserved.  This file is offered as-is, without any warranty.

.PRAGMA: command_comment

/dev/full:
/dev/null:

.PHONY: dj_tests
dj_tests: dj_help dj_full dj_null # dj_skip_stdin

.PHONY: dj_full
# Linux has a /dev/full pseudodevice useful for testing errors.
dj_full: $(BIN)/dj /dev/full
	case "$$(uname)" in \
	Linux) \
		$(BIN)/dj -Hi /dev/zero -o /dev/full 2>&1 \
			| tee /dev/stderr \
			| xargs -I out test '1+0 > 0+0; 1024 > 0' = out \
		;; \
	esac

.PHONY: dj_help
dj_help: $(BIN)/dj
	! $(BIN)/dj -h

.PHONY: dj_null
# Read nothing from /dev/null, write nothing to /dev/null.
dj_null: $(BIN)/dj /dev/null
	$(BIN)/dj -Hi /dev/null -o /dev/null 2>&1 \
		| tee /dev/stderr \
		| xargs -I out test '0+0 > 0+0; 0 > 0' = out

# This test currently fails. This is probably due to dj(1) being stale relative
# to the main harakit branch. TODO: Reassess once the testing branch is merged.
# .PHONY: dj_skip_stdin
# # Test skipping stdin.
# dj_skip_stdin: $(BIN)/dj
# 	# Pipe 1024B of '\0' into dj(1); skip the first 24B; expect 1000B written.
# 	dd count=1 bs=1024 </dev/zero 2>/dev/null \
# 		| $(BIN)/dj -H -s 24 -o /dev/null 2>&1 \
# 		| tee /dev/stderr \
# 		| xargs -I out test '1+0 > 1+0; 1024 > 1000' = out