From 6336a22e5d5aa44c3ef70f75fc262b3a90e425dd Mon Sep 17 00:00:00 2001
From: Jan Macku <jamacku@redhat.com>
Date: Thu, 9 Jan 2025 13:48:47 +0100
Subject: [PATCH] feat: fail when running in a shallow git repository

---
 src/index.sh    | 3 ++-
 test/index.bats | 3 +--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/index.sh b/src/index.sh
index 3b66dd5..6f11de4 100755
--- a/src/index.sh
+++ b/src/index.sh
@@ -41,7 +41,8 @@ if ! [[ ${FULL_SCAN} -eq 0 ]] || ! is_strict_check_on_push_demanded; then
   # https://github.com/actions/runner/issues/342
   # Get the names of files from range of commits (excluding deleted files)
   # BASE and HEAD are always set, it is checked inside pick_base_and_head_hash function
-  git diff --name-only -z --diff-filter=db "${BASE}".."${HEAD}" > "${WORK_DIR}changed-files.txt"
+  git diff --name-only -z --diff-filter=db "${BASE}".."${HEAD}" > "${WORK_DIR}changed-files.txt" || \
+    echo "::warning:: Please check if repository was cloned with \`fetch-depth: 0\`. Differential ShellCheck needs full history to work properly."; exit 1
 
   only_changed_scripts=()
   get_scripts_for_scanning "${WORK_DIR}changed-files.txt" "only_changed_scripts"
diff --git a/test/index.bats b/test/index.bats
index 74f8ae0..017f8bc 100644
--- a/test/index.bats
+++ b/test/index.bats
@@ -10,14 +10,13 @@ setup () {
   load 'test_helper/bats-support/load'
 }
 
+# The purpose of this file is to get base for test coverage
 @test "index.sh - source" {
   SCRIPT_DIR=""
   INPUT_TRIGGERING_EVENT="manual"
   INPUT_BASE="base"
   INPUT_HEAD="head"
   run . "$PROJECT_ROOT/src/index.sh"
-
-  assert_success
 }
 
 teardown () {