[MSHARED-1445] Unix timestamps since the epoch are not subject to the boundary checks

This closes #73

Author: michael-o

src/main/java/org/apache/maven/archiver/MavenArchiver.java

@@ -758,7 +758,13 @@ public static Optional<Instant> parseBuildOutputTimestamp(String outputTimestamp
 
         // Number representing seconds since the epoch
         if (isNumeric(outputTimestamp)) {
-            return Optional.of(Instant.ofEpochSecond(Long.parseLong(outputTimestamp)));
+            final Instant date = Instant.ofEpochSecond(Long.parseLong(outputTimestamp));
+
+            if (date.isBefore(DATE_MIN) || date.isAfter(DATE_MAX)) {
+                throw new IllegalArgumentException(
+                        "'" + date + "' is not within the valid range " + DATE_MIN + " to " + DATE_MAX);
+            }
+            return Optional.of(date);
         }
 
         // no timestamp configured (1 character configuration is useful to override a full value during pom

src/test/java/org/apache/maven/archiver/MavenArchiverTest.java

@@ -1342,9 +1342,6 @@ void testParseOutputTimestamp() {
 
         assertThat(parseBuildOutputTimestamp("1570300662").get().getEpochSecond())
                 .isEqualTo(1570300662L);
-        assertThat(parseBuildOutputTimestamp("0").get().getEpochSecond()).isZero();
-        assertThat(parseBuildOutputTimestamp("1").get().getEpochSecond()).isEqualTo(1L);
-
         assertThat(parseBuildOutputTimestamp("2019-10-05T18:37:42Z").get().getEpochSecond())
                 .isEqualTo(1570300662L);
         assertThat(parseBuildOutputTimestamp("2019-10-05T20:37:42+02:00").get().getEpochSecond())
@@ -1372,9 +1369,6 @@ void testEmptyParseOutputTimestampInstant(String value) {
 
     @ParameterizedTest
     @CsvSource({
-        "0,0",
-        "1,1",
-        "9,9",
         "1570300662,1570300662",
         "2147483648,2147483648",
         "2019-10-05T18:37:42Z,1570300662",
@@ -1410,6 +1404,9 @@ void testThrownParseOutputTimestampInstant(String outputTimestamp) {
     @ParameterizedTest
     @ValueSource(
             strings = {
+                "0",
+                "1",
+                "9",
                 "1980-01-01T00:00:01Z",
                 "2100-01-01T00:00Z",
                 "2100-02-28T23:59:59Z",