I18n locale

test/miaou-bash.test.bash

@@ -137,6 +137,47 @@ function fail_miaou_count {
   failures+=("$cmd 3>$TMP_MIAOU")
   return 1
 }
+
+function assert_locales_equally_populated {
+  ((test_count++))
+  local locales_dir="$MIAOU_BASH_DIR"/locales
+  local main_locale_file="$locales_dir"/"$1".sh
+  if [[ ! -f $main_locale_file ]]; then
+    echo -n F
+    failures+=("missing locale file: $main_locale_file for locale: $1")
+    return 1
+  fi
+  shift
+  if [[ $# -gt 0 ]]; then
+    local extra_locale_file difference variable_name
+    for extra in "$@"; do
+      extra_locale_file="$locales_dir"/"$extra".sh
+      if [[ ! -f $extra_locale_file ]]; then
+        echo -n F
+        failures+=("missing locale file: $extra_locale_file for locale: $extra")
+        return 1
+      fi
+      mapfile -t difference < <(
+        diff <(grep -oP '^\s*[A-Za-z_][A-Za-z0-9_]*' "$main_locale_file" | sort) \
+          <(grep -oP '^\s*[A-Za-z_][A-Za-z0-9_]*' "$extra_locale_file" | sort) \
+          2>&1 | head -n2
+      )
+      if [[ ${#difference[@]} -gt 0 ]]; then
+        variable_name=$(echo "${difference[1]}" | cut -d' ' -f2)
+        change_type="${difference[0]}"
+        echo -n F
+        if [[ "$change_type" =~ d ]]; then
+          failures+=("locale=$extra (in $extra_locale_file) misses variable (to add): ${variable_name}")
+        else
+          failures+=("locale=$extra (in $extra_locale_file) useless variable (to remove): ${variable_name}")
+        fi
+        return 1
+      fi
+    done
+  fi
+  echo -n .
+}
+
 # main
 
 set -uo pipefail
@@ -181,6 +222,7 @@ time {
   fail_stderr_grep script_not_found "ERROR: script 'doesnt_exist' not found!"
   fail_stderr_grep no_script 'ERROR: script expected!'
 
+  assert_locales_equally_populated en es fr
   # TODO: I18n tests for:
   #         /opt/miaou-bash/test/stub/scenario.bash unbound_variable
   #         /opt/miaou-bash/test/stub/scenario.bash unbound_associative