test: add get_number_of() test

test/get_number_of.bats

@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+setup_file () {
+  load 'test_helper/common-setup'
+  _common_setup
+}
+
+setup () {
+  load 'test_helper/bats-assert/load'
+  load 'test_helper/bats-support/load'
+}
+
+@test "get_number_of() - arguments" {
+  source "${PROJECT_ROOT}/src/summary.sh"
+
+  run get_number_of
+  assert_failure 1
+}
+
+@test "get_number_of() - defects" {
+  source "${PROJECT_ROOT}/src/summary.sh"
+
+  echo -e \
+"Error: SHELLCHECK_WARNING:
+src/index.sh:53:10: warning[SC2154]: MAIN_HEADING is referenced but not assigned.
+
+Error: SHELLCHECK_WARNING:
+src/index.sh:56:14: warning[SC2154]: WHITE is referenced but not assigned.
+
+Error: SHELLCHECK_WARNING:
+src/index.sh:56:56: warning[SC2154]: NOCOLOR is referenced but not assigned.
+" > ../defects.log
+
+  run get_number_of "defects"
+  assert_success
+  assert_output "3"
+}
+
+@test "get_number_of() - fixes" {
+  source "${PROJECT_ROOT}/src/summary.sh"
+
+  echo -e \
+"Error: SHELLCHECK_WARNING:
+src/index.sh:7:3: note[SC1091]: Not following: functions.sh: openBinaryFile: does not exist (No such file or directory)
+" > ../fixes.log
+
+  run get_number_of "fixes"
+  assert_success
+  assert_output "1"
+}
+
+teardown () {
+  rm -f ../fixes.log ../defects.log
+}