From 5f12ff617876ad89179468dece929cd38082b632 Mon Sep 17 00:00:00 2001
From: James Shubin <james@shubin.ca>
Date: Tue, 12 Jun 2018 04:35:44 -0400
Subject: [PATCH] lang: Add indentation test to parser

This adds a test case to catch some common typos.
---
 test.sh          |  1 +
 test/test-vet.sh | 44 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 45 insertions(+)
 create mode 100755 test/test-vet.sh

diff --git a/test.sh b/test.sh
index 6326d16b..40c3b5a4 100755
--- a/test.sh
+++ b/test.sh
@@ -43,6 +43,7 @@ function skip-testsuite()
 # used at the end to tell if everything went fine
 failures=''
 
+run-testsuite ./test/test-vet.sh
 run-testsuite ./test/test-misc.sh
 run-testsuite ./test/test-gofmt.sh
 run-testsuite ./test/test-yamlfmt.sh
diff --git a/test/test-vet.sh b/test/test-vet.sh
new file mode 100755
index 00000000..ed446aa6
--- /dev/null
+++ b/test/test-vet.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+# vet a few random things
+
+echo running "$0"
+
+#ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && cd .. && pwd )"	# dir!
+ROOT=$(dirname "${BASH_SOURCE}")/..
+cd "${ROOT}"
+. test/util.sh
+
+failures=''
+function run-test()
+{
+	$@ || failures=$( [ -n "$failures" ] && echo "$failures\\n$@" || echo "$@" )
+}
+
+function parser-indentation() {
+	# the $ before the \t magically makes grep match the tab somehow...
+	if grep $'\t|' "$1"; then	# indent the pipe too
+		return 1
+	fi
+	if grep ' |' "$1"; then	# indent the pipe too (no spaces!)
+		return 1
+	fi
+	if grep '^ ' "$1"; then	# format with tabs, no leading spaces
+		return 1
+	fi
+
+	return 0
+}
+
+# loop through individual *.y files
+for file in `find . -maxdepth 3 -type f -name '*.y' -not -path './old/*' -not -path './tmp/*'`; do
+	run-test parser-indentation "$file"
+done
+
+if [[ -n "$failures" ]]; then
+	echo 'FAIL'
+	echo 'The following tests have failed:'
+	echo -e "$failures"
+	echo
+	exit 1
+fi
+echo 'PASS'