RFR: small testfix: JDK-8220693: jdk/javadoc/doclet/MetaTag/MetaTag.java with unexpected date

[Jonathan Gibbons]

Please review a small test-only fix, to suppress the check for the date 
in the generated files when the date has changed since the test started 
(i.e.the date was run close to midnight.)  And yes, this did just happen!

JBS: https://bugs.openjdk.java.net/browse/JDK-8220693

-- Jon

$ hg diff
diff -r c61f09122d3b test/langtools/jdk/javadoc/doclet/MetaTag/MetaTag.java
--- a/test/langtools/jdk/javadoc/doclet/MetaTag/MetaTag.java    Fri Mar 
15 18:59:21 2019 +0100
+++ b/test/langtools/jdk/javadoc/doclet/MetaTag/MetaTag.java    Fri Mar 
15 11:56:19 2019 -0700
@@ -93,14 +93,19 @@
                  "<meta name=\"keywords\" content=\"Overview, Sample 
Packages\">");

          // NOTE: Hopefully, this regression test is not run at 
midnight.  If the output
-        // was generated yesterday and this test is run today, the test 
will fail.
-        checkOutput("overview-summary.html", found,
-                "<meta name=\"" + metaNameDate + "\" content=\"" + 
date() + "\">");
+        // was generated yesterday and this test is run today, this 
check could fail ...
+        // so make sure the date has not changed since the test started
+        String date = date();
+        if (date.equals(startDate)) {
+            checkOutput("overview-summary.html", found,
+                    "<meta name=\"" + metaNameDate + "\" content=\"" + 
date + "\">");
+        }
      }

      private static final SimpleDateFormat dateFormat = new 
SimpleDateFormat("yyyy-MM-dd");
+    private static final String startDate = date();

-    String date() {
+    static String date() {
          return dateFormat.format(new Date());
      }
  }