tests update

Author: host6

src/main/java/org/scm4j/commons/RegexConfig.java

@@ -53,7 +53,7 @@ String prependOmapIfNeed(String content, Yaml yaml) throws IOException {
 		return content;
 	}
 
-	boolean isSequence(String content, Yaml yaml) {
+	private boolean isSequence(String content, Yaml yaml) {
 		StringReader sr = new StringReader(content);
 		Node node = yaml.compose(sr);
 		return node != null && node.getNodeId().equals(NodeId.sequence);

src/test/java/org/scm4j/commons/RegexConfigTest.java

@@ -92,4 +92,10 @@ public void testPrependOmap() throws Exception {
 		content = config.prependOmapIfNeed(FileUtils.readFileToString(empty, StandardCharsets.UTF_8), yaml);
 		assertTrue(StringUtils.countMatches(content, RegexConfig.OMAP_TAG) == 0);
 	}
+
+	@Test
+	public void testNoOmapTagOnEmptyFile() throws Exception {
+		File empty = new File(this.getClass().getResource("empty.yml").toURI());
+		assertTrue(config.noOMAPTag(FileUtils.readFileToString(empty, StandardCharsets.UTF_8)));
+	}
 }