tests: add tests for abuild-fetch

tests/abuild-fetch.bats

@@ -0,0 +1,36 @@
+setup() {
+	export ABUILD_FETCH="$PWD/../abuild-fetch"
+
+	tmpdir="$BATS_TMPDIR"/abuild-fetch
+	bindir="$tmpdir"/bin
+	mkdir -p "$bindir"
+	export PATH="$bindir:$PATH"
+
+	# fake curl
+	cat >> "$bindir"/curl <<-EOF
+		#!/bin/sh
+
+		touch "$tmpdir"/curl-invoked
+		echo "Fake curl invoked with: \$@"
+		exit \${CURL_EXITCODE:-0}
+	EOF
+	chmod +x "$bindir"/curl
+}
+
+teardown() {
+	rm -rf "$tmpdir"
+}
+
+@test "abuild-fetch: help text" {
+	$ABUILD_FETCH -h
+}
+
+@test "abuild-fetch: test curl invocation" {
+	$ABUILD_FETCH -d "$tmpdir" https://example.com/non-existing
+	[ -f "$tmpdir"/curl-invoked ]
+}
+
+@test "abuild-fetch: test curl failure" {
+	run CURL_EXITCODE=1 $ABUILD_FETCH -d "$tmpdir" https://example.com/non-existing
+	[ $status -ne 0 ]
+}