CLDR-17857 add whole-locale warning for missing English name

tools/cldr-code/src/main/java/org/unicode/cldr/test/CheckCLDR.java

@@ -936,7 +936,8 @@ public enum Subtype {
             shortDateFieldInconsistentLength,
             illegalParameterValue,
             illegalAnnotationCode,
-            illegalCharacter;
+            illegalCharacter,
+            missingEnglishName;
 
             @Override
             public String toString() {

tools/cldr-code/src/main/java/org/unicode/cldr/test/CheckCoverage.java

@@ -10,6 +10,7 @@
 import org.unicode.cldr.test.CheckCLDR.CheckStatus.Subtype;
 import org.unicode.cldr.util.CLDRFile;
 import org.unicode.cldr.util.CLDRFile.Status;
+import org.unicode.cldr.util.CLDRLocale;
 import org.unicode.cldr.util.Factory;
 import org.unicode.cldr.util.InternalCldrException;
 import org.unicode.cldr.util.LanguageTagParser;
@@ -157,6 +158,25 @@ public CheckCLDR handleSetCldrFileToCheck(
         setSkipTest(false);
         latin = ValuePathStatus.isLatinScriptLocale(cldrFileToCheck);
 
+        // check whether the English name is present. See {@link
+        // LikelySubtagsTest#TestMissingInfoForLanguage}
+        {
+            final CLDRLocale locale = CLDRLocale.getInstance(localeID);
+            String path = CLDRFile.getKey(CLDRFile.LANGUAGE_NAME, locale.getLanguage());
+            // getEnglishFile() returns a resolved file, so just check isHere.
+            boolean englishName = getEnglishFile().isHere(path);
+            if (!englishName) {
+                possibleErrors.add(
+                        new CheckStatus()
+                                .setCause(this)
+                                .setMainType(CheckStatus.warningType)
+                                .setSubtype(Subtype.missingEnglishName)
+                                .setMessage(
+                                        "Missing English translation for " + locale.getLanguage(),
+                                        new Object[] {}));
+            }
+        }
+
         return this;
     }
 

tools/cldr-code/src/test/java/org/unicode/cldr/unittest/LikelySubtagsTest.java

@@ -340,12 +340,7 @@
             if (englishName == null) {
                 Level covLevel = ccl.getEffectiveCoverageLevel(language);
                 if (covLevel == null || !covLevel.isAtLeast(Level.BASIC)) {
-                    // https://unicode-org.atlassian.net/browse/CLDR-15663
-                    if (logKnownIssue(
-                            "CLDR-15663",
-                            "English translation should not be required for sub-basic language name")) {
-                        continue; // skip error
-                    }
+                    continue; // skip error if locale is not at least basic. (null means sub-basic)
                 }
                 errln("Missing English translation for: " + language + " which is at " + covLevel);
             }
@@ -547,7 +542,7 @@
         }
 
         if (!collectedBad.isEmpty()) {
             warnln(
                     "Locales have "
                             + collectedBad.size()
                             + " unexpected characters in main and/or aux:\t"
@@ -781,7 +776,7 @@
                 // SUPPLEMENTAL_DATA_INFO.getLikelyOrigins().get(value);
                 //                    fieldToOrigin.put(value, origin == null ? "n/a" : origin);
                 //                }
                 warnln("Bad status=" + entry.getKey() + " for " + entry.getValue());
             }
         }
     }