CLDR-14996 Test for forbidden time formats in en_001 (unicode-org#4626)

Author: btangmu

tools/cldr-code/src/test/java/org/unicode/cldr/test/TestEn001Time.java

@@ -0,0 +1,41 @@
+package org.unicode.cldr.test;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+
+import org.junit.jupiter.api.Test;
+import org.unicode.cldr.util.*;
+
+public class TestEn001Time {
+
+    // TODO: for short timezone names, check that en_001 has “∅∅∅” iff en has a value, and
+    // that en_001 otherwise has no short timezone names (except through inheritance).
+    // Reference: https://unicode-org.atlassian.net/browse/CLDR-14996
+    static final boolean CHECK_SHORT_TIMEZONE_NAMES = false;
+    static final String TIME_FORMAT_PREFIX =
+            "//ldml/dates/calendars/calendar[@type=\"gregorian\"]/timeFormats/timeFormatLength";
+
+    static final String TIMEZONE_NAME_PREFIX = "//ldml/dates/timeZoneNames";
+    static final String TIMEZONE_NAME_SHORT = "short";
+
+    /** en_001 should not have standard time formats */
+    @Test
+    void testTime() {
+        Factory factory = CLDRConfig.getInstance().getCommonAndSeedAndMainAndAnnotationsFactory();
+        CLDRFile cldrFile = factory.make("en_001", false);
+        for (final String path : cldrFile.fullIterable()) {
+            assertFalse(
+                    path.startsWith(TIME_FORMAT_PREFIX),
+                    "Path starts with " + TIME_FORMAT_PREFIX + ": " + path);
+            if (CHECK_SHORT_TIMEZONE_NAMES) {
+                assertFalse(
+                        path.startsWith(TIMEZONE_NAME_PREFIX) && path.contains(TIMEZONE_NAME_SHORT),
+                        "Path starts with "
+                                + TIMEZONE_NAME_PREFIX
+                                + " + and contains "
+                                + TIMEZONE_NAME_SHORT
+                                + ": "
+                                + path);
+            }
+        }
+    }
+}