ProgressConsole: nested trace fixed

Author: host6

src/main/java/org/scm4j/commons/progress/ProgressConsole.java

@@ -94,7 +94,7 @@ public void error(String message) {
 
 	@Override
 	public void startTrace(String message) {
-		indent(level + 1);
+		indent(level + ((indent + name).isEmpty() ? 0 : 1));
 		trace(message);
 	}
 

src/test/java/org/scm4j/commons/progress/ProgressConsoleTest.java

@@ -106,4 +106,19 @@ public void testEmpty() throws Exception {
 		assertEquals("", pc.getOutdent());
 		pc.close();
 	}
+	
+	public void testNestedTraceFromEmpty() throws Exception {
+		PrintStream mockedOut = Mockito.mock(PrintStream.class);
+		IProgress pc = new ProgressConsole(mockedOut, 0, "", "", "");
+		try (IProgress pcNested = pc.createNestedProgress("")) {
+			pcNested.startTrace(START_MESSAGE);
+			pcNested.trace(TRACE);
+			pcNested.endTrace(END_MESSAGE);
+		}
+		Mockito.verify(mockedOut).print("\t");
+		Mockito.verify(mockedOut).print(START_MESSAGE);
+		Mockito.verify(mockedOut).print(TRACE);
+		Mockito.verify(mockedOut).println(END_MESSAGE);
+		pc.close();
+	}
 }