chore: add tests for linter rules path corner case (#5981)

Add test cases for LINTER_RULES_PATH corner cases: . and /

test/lib/linterRulesTest.sh

@@ -11,6 +11,9 @@ LOG_LEVEL="DEBUG"
 # shellcheck source=/dev/null
 source "lib/functions/log.sh"
 
+# shellcheck source=/dev/null
+source "lib/functions/detectFiles.sh"
+
 # shellcheck source=/dev/null
 source "lib/globals/linterRules.sh"
 
@@ -21,13 +24,6 @@ LANGUAGE_ARRAY=("${TEST_LANGUAGE_NAME}" "${TEST_LANGUAGE_NAME_WITHOUT_RULES}")
 # shellcheck source=/dev/null
 source "lib/functions/linterRules.sh"
 
-DEFAULT_RULES_LOCATION="TEMPLATES"
-
-# Use an existing configuration file. Can be anything inside
-# DEFAULT_RULES_LOCATION
-# shellcheck disable=SC2034
-TEST_LANGUAGE_FILE_NAME=".eslintrc.yml"
-
 # shellcheck disable=SC2034
 GITHUB_WORKSPACE="$(pwd)"
 
@@ -36,9 +32,15 @@ function GetLinterRulesTest() {
   FUNCTION_NAME="${FUNCNAME[0]}"
   info "${FUNCTION_NAME} start"
 
+  LinterRulesLocation
+
+  DEFAULT_RULES_LOCATION="${DEFAULT_RULES_LOCATION:-"TEMPLATES"}"
+  # Use an existing configuration file. Can be anything inside
+  # DEFAULT_RULES_LOCATION
+  TEST_LANGUAGE_FILE_NAME="${TEST_LANGUAGE_FILE_NAME:-".eslintrc.yml"}"
   for LANGUAGE in "${LANGUAGE_ARRAY[@]}"; do
     debug "Loading rules for ${LANGUAGE}..."
-    eval "GetLinterRules ${LANGUAGE} ${DEFAULT_RULES_LOCATION}"
+    GetLinterRules "${LANGUAGE}" "${DEFAULT_RULES_LOCATION}"
   done
 
   local EXPECTED_TEST_LANGUAGE_LINTER_RULES="${DEFAULT_RULES_LOCATION}/${TEST_LANGUAGE_FILE_NAME}"
@@ -59,24 +61,70 @@ function GetLinterRulesTest() {
   notice "${FUNCTION_NAME} PASS"
 }
 
+function GetLinterRulesEmptyDotRulesPathTest() {
+  local FUNCTION_NAME
+  FUNCTION_NAME="${FUNCNAME[0]}"
+  info "${FUNCTION_NAME} start"
+
+  # shellcheck disable=SC2034
+  LINTER_RULES_PATH="."
+  TEST_LANGUAGE_FILE_NAME="README.md"
+  DEFAULT_RULES_LOCATION="$(pwd)"
+  GetLinterRulesTest
+
+  unset LINTER_RULES_PATH
+  unset TEST_LANGUAGE_FILE_NAME
+
+  notice "${FUNCTION_NAME} PASS"
+}
+
+function GetLinterRulesEmptyRootRulesPathTest() {
+  local FUNCTION_NAME
+  FUNCTION_NAME="${FUNCNAME[0]}"
+  info "${FUNCTION_NAME} start"
+
+  # shellcheck disable=SC2034
+  LINTER_RULES_PATH="."
+  TEST_LANGUAGE_FILE_NAME="README.md"
+  DEFAULT_RULES_LOCATION="$(pwd)"
+  GetLinterRulesTest
+
+  unset LINTER_RULES_PATH
+  unset TEST_LANGUAGE_FILE_NAME
+
+  notice "${FUNCTION_NAME} PASS"
+}
+
 function LinterRulesVariablesExportTest() {
   local FUNCTION_NAME
   FUNCTION_NAME="${FUNCNAME[0]}"
   info "${FUNCTION_NAME} start"
 
+  DEFAULT_RULES_LOCATION="TEMPLATES"
+  TEST_LANGUAGE_FILE_NAME=".eslintrc.yml"
+
+  # shellcheck source=/dev/null
+  source "lib/globals/linterRules.sh"
+
   for LANGUAGE in "${LANGUAGE_ARRAY[@]}"; do
     debug "Loading rules for ${LANGUAGE}..."
-    eval "GetLinterRules ${LANGUAGE} ${DEFAULT_RULES_LOCATION}"
+    GetLinterRules "${LANGUAGE}" "${DEFAULT_RULES_LOCATION}"
   done
 
   for LANGUAGE in "${LANGUAGE_ARRAY[@]}"; do
+    debug "Verify that ${LANGUAGE} configuration file variable is exported"
     if [[ "${LANGUAGE}" == "${TEST_LANGUAGE_NAME_WITHOUT_RULES}" ]]; then
-      debug "${LANGUAGE} doesn't have linter rules. Skipping export test."
+      debug "${LANGUAGE} doesn't have linter configuration file variable. Skipping export test."
       continue
     fi
 
+    local LANGUAGE_LINTER_RULES_VARIABLE_NAME="${LANGUAGE}_LINTER_RULES"
+    if [[ ! -v "${LANGUAGE_LINTER_RULES_VARIABLE_NAME}" ]]; then
+      fatal "${LANGUAGE_LINTER_RULES_VARIABLE_NAME} is not defined"
+    fi
     local -n LANGUAGE_LINTER_RULES
-    LANGUAGE_LINTER_RULES="${LANGUAGE}_LINTER_RULES"
+    LANGUAGE_LINTER_RULES="${LANGUAGE_LINTER_RULES_VARIABLE_NAME}"
+
     debug "LANGUAGE_LINTER_RULES (${LANGUAGE}) variable attributes: ${LANGUAGE_LINTER_RULES@a}"
     if [[ "${LANGUAGE_LINTER_RULES@a}" == *x* ]]; then
       info "LANGUAGE_LINTER_RULES for ${LANGUAGE} is exported as expected"
@@ -90,4 +138,6 @@ function LinterRulesVariablesExportTest() {
 }
 
 GetLinterRulesTest
+GetLinterRulesEmptyDotRulesPathTest
+GetLinterRulesEmptyRootRulesPathTest
 LinterRulesVariablesExportTest