Validate boundaries of tsv

Author: dr0i

metafacture-flux/src/main/java/org/metafacture/flux/HelpPrinter.java

@@ -52,7 +52,8 @@ public final class HelpPrinter {
     private static final String PATH_TO_EXAMPLES = "../metafacture-documentation/linksAndExamples.tsv";
     private static final Map<String, String[]> EXAMPLES_MAP = new HashMap<>();
     private static final int COLUMN_TO_PG_EXAMPLE = 3;
-    private static final int REQUIRED_COLUMNS_OF_EXAMPLE = 2;
+    private static final int MAX_COLUMNS_OF_EXAMPLE = COLUMN_TO_PG_EXAMPLE;
+    private static final int MIN_COLUMNS_OF_EXAMPLE = 2;
 
     private HelpPrinter() {
         // no instances
@@ -126,9 +127,11 @@ private static <T> void describe(final String name, final ObjectFactory<T> facto
         printSignature(out, moduleClass);
 
         final String[] examplesEntry = EXAMPLES_MAP.get(name);
-        if (!EXAMPLES_MAP.isEmpty() && (examplesEntry == null || examplesEntry.length < REQUIRED_COLUMNS_OF_EXAMPLE)) {
+        if (!EXAMPLES_MAP.isEmpty() && (examplesEntry == null || examplesEntry.length < MIN_COLUMNS_OF_EXAMPLE ||
+                examplesEntry.length > MAX_COLUMNS_OF_EXAMPLE)) {
             throw new MetafactureException(
-                    "Failed to load build infos: tsv with links hasn't at least " + REQUIRED_COLUMNS_OF_EXAMPLE +
+                    "Failed to load build infos: tsv with links hasn't at least " + MIN_COLUMNS_OF_EXAMPLE + " " +
+                            "or exceeds the number of allowed columns (i.e. " + MAX_COLUMNS_OF_EXAMPLE + ")" +
                             " for the entry '" + name + "'");
         }
         if (examplesEntry != null && examplesEntry.length == COLUMN_TO_PG_EXAMPLE) {