Testfile

Makefile

@@ -14,6 +14,7 @@
 PREFIX=/usr/local
 
 CC=cc
+MAKE=make
 RUSTC=rustc
 
 .PHONY: all
@@ -42,6 +43,7 @@ install: dist
 test: build
 	tests/posix-compat.sh
 	$(RUSTC) --test src/getopt-rs/lib.rs -o build/test/getopt
+	$(MAKE) -f Testfile
 
 build/o/libsysexits.rlib: build
 	# bandage solution until bindgen(1) gets stdin support

TESTING

@@ -1,74 +0,0 @@
-#!/bin/sh
-
-### Overview
-#
-# Testing is conducted with this script, in the source tree root, using the
-# tests in tests/.
-#
-# Basically, tests follow the format:
-#
-# - tests/[utility].[number].test
-# 	Test #[number]. This is an executable file (typically a script).
-# - tests/[utility].[number].expected
-# 	This is the expected standard output of test #[number].
-#
-# This script runs the executable [utility].[number].test and the following
-# file is written during testing:
-#
-# - tests/[utility].[number].output
-# 	The actual standard output from test #[number].
-#
-# If the actual standard output from the test differs from the expected
-# standard output, the testing ends, showing the difference.
-
-set -e
-
-alias emit="printf '%s: %s\n' '$0' \"\$1\""
-
-export PATH="$PATH:./build/bin/"
-
-if strcmp '' "$1"; then
-	printf 'Usage: %s [utilities...]\n' "$0" >&2
-	exit 64 # sysexits.h(3) EX_USAGE
-fi
-
-### Details
-
-while ! strcmp '' "$1"; do # $1 refers to the given utility
-
-# Tests are called [utility].[number].test. Tests are numbered from 1 with no
-# leading zeroes in the numbers, so (for example) scrut(1)'s first three tests
-# are scrut.1.test, scrut.2.test, and scrut.3.test. Tests are run sequentially
-# in the numbered order.
-
-	i=1
-	while scrut -e "$1.$i.test"; do # $i refers to the test number
-		emit "$1.$i.test: Running test..."
-
-# A test is an executable file. This runs each test for given utilities
-# and writes the standard output from the test to [utility].[number].output,
-# then uses diff(1p) (with the "-u" option) to highlight differences between
-# the actual output and the expected output, which is located at
-# [utility].[number].expected. If there are no differences none are shown and
-# testing continues.
-
-		# $1.$i.test is the same as [utility].[number].test
-		./"$1.$i.test" \
-			| mm -o "$1.$i.output" -o - \
-			| diff -u - "$1.$i.expected" \
-				|| emit '$1.$i.test: Test passed.\n'
-				# "set -e" terminates on an unsuccessful exit
-
-# The ideal output of this script is no output at all and each
-# [utility].[number].output written matching its associated
-# [utility].[number].expected.
-
-		i=$(rpn 1 "$i" +)
-	done
-
-	shift
-done
-
-# --
-# This work © 2024 by DTB is licensed under CC BY-SA 4.0. To view a copy of
-# this license, visit <http://creativecommons.org/licenses/by-sa/4.0/>

Testfile

@@ -0,0 +1,77 @@
+# Copyright (c) 2024 DTB <trinity@trinity.moe>
+# 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.
+
+BIN = build/bin
+MAKE = make -B
+
+DEFENDANTS = dj false intcmp strcmp true
+.PHONY: all $(DEFENDANTS)
+all: $(DEFENDANTS)
+
+$(BIN)/dj:
+	$(MAKE) dj
+
+$(BIN)/false:
+	$(MAKE) false
+
+$(BIN)/intcmp:
+	$(MAKE) intcmp
+
+$(BIN)/strcmp
+	$(MAKE) strcmp
+
+$(BIN)/true:
+	$(MAKE) true
+
+dj: $(BIN)/dj $(BIN)/strcmp
+	sh -c "! $(BIN)/dj -h"
+	# This test is theoretically Linux-dependent; write(2) should return -1 on
+	# error.
+	# Right now dj(1) interprets the return value of write(2) as the amount of
+	# bytes written. This can decrement the stored quantity of bytes written,
+	# which is an int, so doesn't underflow but goes negative. dj(1) tries to
+	# again to write(2) if an error occurs in which no bytes are written, so in
+	# total two write(2)s are attempted and so the written byte quantity is -2.
+	# This is a bug and will change, but for now is at least documented.
+	sh -ec "\
+		$(BIN)/dj -Hi /dev/zero -o /dev/full \
+		| xargs -I out $(BIN)/strcmp '1+0 > 0+0; 1024 > -2' out"
+	# Read nothing from /dev/null, write nothing to /dev/null.
+	sh -ec "\
+		$(BIN)/dj -Hi /dev/null -o /dev/null \
+		| xargs -I out $(BIN)/strcmp '0+0 > 0+0; 0 > 0' out"
+
+false: $(BIN)/false
+	sh -c "! $(BIN)/false"
+	sh -c "! $(BIN)/false -h"
+
+intcmp: $(BIN)/intcmp
+	intcmp -e   3 3 3
+	intcmp -g   3 2 1
+	intcmp -l   1 2 3
+	intcmp -ge  3 3 1
+	intcmp -le  1 3 3
+	intcmp -gl  1 2 3
+	intcmp -egl 3 1 1 2
+	sh -c "! intcmp -e   1 2 3"
+	sh -c "! intcmp -g   1 3 3"
+	sh -c "! intcmp -l   3 3 1"
+	sh -c "! intcmp -ge  1 2 3"
+	sh -c "! intcmp -le  3 2 1"
+	sh -c "! intcmp -gl  3 3 3"
+	sh -c "! intcmp -egl foo"
+
+strcmp: $(BIN)/strcmp
+	$(BIN)/strcmp equals equals
+	sh -c "! $(BIN)/strcmp inequals equals"
+	$(BIN)/strcmp - -
+	sh -c "! $(BIN)/strcmp -h"
+	sh -c "! $(BIN)/strcmp nocmp"
+
+true:
+	$(BIN)/true
+	$(BIN)/true -h