TESTS: Add trailing whitespace test

Signed-off-by: Lukas Slebodnik <lslebodn@redhat.com>

Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>
Reviewed-by: Pavel Reichl <preichl@redhat.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/src/tests/whitespace_test b/src/tests/whitespace_test
new file mode 100755
index 000000000..ea2aecf60
--- /dev/null
+++ b/src/tests/whitespace_test
@@ -0,0 +1,32 @@
+#!/bin/bash
+
+set -e -u -o pipefail
+
+# An AWK regex matching tracked file paths to be excluded from the search.
+# Example: '.*\.po|README'
+PATH_EXCLUDE_REGEX='.*\.po|.*\.patch|.*\.diff|\/debian\/.*'
+
+export GIT_DIR="$ABS_TOP_SRCDIR/.git"
+export GIT_WORK_TREE="$ABS_TOP_SRCDIR"
+
+if [ ! -d "$GIT_DIR" ]; then
+    echo "Git repository is required for this test!" 1>&2
+    exit 77
+fi
+
+git grep -n -I '\s\+$' -- "$(git rev-parse --show-toplevel)" |
+    awk -- "
+        BEGIN {
+            found = 0
+        }
+        ! /^($PATH_EXCLUDE_REGEX):/ {
+            if (!found) {
+                print \"Trailing whitespace found:\"
+                found = 1
+            }
+            print
+        }
+        END {
+            exit found
+        }
+    "