From f2f2713e6b9c746a3089f0e83e265b14f15917ac Mon Sep 17 00:00:00 2001
From: EuAndreh <eu@euandre.org>
Date: Sun, 24 Jan 2021 00:53:32 -0300
Subject: Add tests/cli-opts.sh tests

---
 .gitignore        |   1 +
 Makefile          |   1 +
 remembering       |   4 +--
 tests/cli-opts.sh | 104 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 108 insertions(+), 2 deletions(-)
 create mode 100755 tests/cli-opts.sh

diff --git a/.gitignore b/.gitignore
index 87174b6..e456bd1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /public/
+/tests/test-profiles/
diff --git a/Makefile b/Makefile
index 5e26a5b..71cb676 100644
--- a/Makefile
+++ b/Makefile
@@ -28,6 +28,7 @@ uninstall:
 
 check:
 	sh tests/all.sh
+	sh tests/cli-opts.sh
 
 	if [ -d .git ]; then \
 		echo 'Assuming Git repository, running development checks.'; \
diff --git a/remembering b/remembering
index 9210309..b31924e 100755
--- a/remembering
+++ b/remembering
@@ -2,11 +2,11 @@
 set -eu
 
 usage() {
-	printf 'Usage: %s: -p PROFILE -c "COMMAND"\n' "$0"
+	printf 'Usage: %s: -p PROFILE -c "COMMAND"\n' "$0" >&2
 }
 
 missing() {
-	printf 'Missing option: %s\n' "$1"
+	printf 'Missing option: %s\n' "$1" >&2
 }
 
 COMMANDFLAG=
diff --git a/tests/cli-opts.sh b/tests/cli-opts.sh
new file mode 100755
index 0000000..a6be446
--- /dev/null
+++ b/tests/cli-opts.sh
@@ -0,0 +1,104 @@
+#!/bin/sh
+set -u
+
+export XDG_DATA_HOME="$PWD/tests/test-profiles"
+OUT=
+ERR=
+STATUS=
+
+assert_status() {
+	if [ "$STATUS" != "$1" ]; then
+		echo "Unexpected status: $STATUS, expected: $1"
+		exit 1
+	fi
+}
+
+assert_usage() {
+	if ! grep -Fq 'Usage' "$ERR"; then
+		echo 'Expected to find "Usage" text, it was missing. STDERR was:'
+		cat "$ERR"
+		exit 1
+	fi
+}
+
+test_unsupported_long_flags() {
+	OUT="$(mktemp)"
+	ERR="$(mktemp)"
+	sh remembering --unknown-long-flag 1>"$OUT" 2>"$ERR"
+	STATUS=$?
+	assert_status 2
+	assert_usage
+}
+
+test_missing_required_flags() {
+	OUT="$(mktemp)"
+	ERR="$(mktemp)"
+	sh remembering -a something -b else 1>"$OUT" 2>"$ERR"
+	STATUS=$?
+	assert_status 2
+	assert_usage
+}
+
+test_single_required_flag() {
+	OUT="$(mktemp)"
+	ERR="$(mktemp)"
+	sh remembering -p valid-test-profile 1>"$OUT" 2>"$ERR"
+	STATUS=$?
+	assert_status 2
+	assert_usage
+
+	OUT="$(mktemp)"
+	ERR="$(mktemp)"
+	sh remembering -c 'head -n' 1>"$OUT" 2>"$ERR"
+	STATUS=$?
+	assert_status 2
+	assert_usage
+}
+
+test_flags_without_required_argument() {
+	OUT="$(mktemp)"
+	ERR="$(mktemp)"
+	sh remembering -pc 1>"$OUT" 2>"$ERR"
+	STATUS=$?
+	assert_status 2
+	assert_usage
+
+	OUT="$(mktemp)"
+	ERR="$(mktemp)"
+	sh remembering -cp 1>"$OUT" 2>"$ERR"
+	STATUS=$?
+	assert_status 2
+	assert_usage
+
+	OUT="$(mktemp)"
+	ERR="$(mktemp)"
+	sh remembering -p -c 1>"$OUT" 2>"$ERR"
+	STATUS=$?
+	assert_status 2
+	assert_usage
+}
+
+test_valid_options() {
+	OUT="$(mktemp)"
+	ERR="$(mktemp)"
+	printf 'a\nb\nc\n' | sh remembering -p "always-unique-$(uuidgen)" -c 'head -n1' 1>"$OUT" 2>"$ERR"
+	STATUS=$?
+	assert_status 0
+	if [ "$(cat "$OUT")" != 'a' ]; then
+		echo "Expected STDOUT ($OUT) to be 'a', but was:"
+		cat "$OUT"
+		exit 1
+	fi
+	if [ "$(cat "$ERR")" != '' ]; then
+		echo "Expected STDERR ($ERR) to be empty, but has content:"
+		cat "$ERR"
+		exit 1
+	fi
+}
+
+test_unsupported_long_flags
+test_missing_required_flags
+test_missing_required_flags
+test_single_required_flag
+test_flags_without_required_argument
+test_valid_options
-- 
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