Exception while using a spans builder to set styles

[grigoriliev]

Consider the following test case:

 @Test
    public void testSetStylesUsingSpansBuilder() {
        String style1 = "style1";
        String style2 = "style2";
    	CodeArea document = new CodeArea();
    	document.replaceText(0, 0, "a\n\nb");
    	document.setStyle(0, 4, Collections.singleton(style1));
        StyleSpansBuilder<Collection<String>> spansBuilder = new StyleSpansBuilder<>();
        spansBuilder.add(Collections.singleton(style2), 1);
        spansBuilder.add(Collections.emptyList(), 1);
        spansBuilder.add(Collections.singleton(style2), 2);
        document.setStyleSpans(0, spansBuilder.create());
    }

I got the following exception:

java.lang.IllegalArgumentException: Cannot construct a Paragraph with an empty list of segments
	at org.fxmisc.richtext.model.Paragraph.<init>(Paragraph.java:67)
	at org.fxmisc.richtext.model.Paragraph.restyle(Paragraph.java:249)
	at org.fxmisc.richtext.model.GenericEditableStyledDocumentBase.lambda$5(GenericEditableStyledDocumentBase.java:160)
	at org.fxmisc.richtext.model.ReadOnlyStyledDocument.lambda$10(ReadOnlyStyledDocument.java:272)
	at org.reactfx.util.Tuple2.map(Tuple2.java:31)
	at org.fxmisc.richtext.model.ReadOnlyStyledDocument.lambda$7(ReadOnlyStyledDocument.java:271)
	at org.reactfx.util.Tuple2.map(Tuple2.java:31)
	at org.fxmisc.richtext.model.ReadOnlyStyledDocument.replace(ReadOnlyStyledDocument.java:270)
	at org.fxmisc.richtext.model.ReadOnlyStyledDocument.replace(ReadOnlyStyledDocument.java:260)
	at org.fxmisc.richtext.model.GenericEditableStyledDocumentBase.setStyleSpans(GenericEditableStyledDocumentBase.java:154)
	at org.fxmisc.richtext.model.SimpleEditableStyledDocument.setStyleSpans(SimpleEditableStyledDocument.java:1)
	at org.fxmisc.richtext.GenericStyledArea.setStyleSpans(GenericStyledArea.java:1282)

I wasn't getting this exception with version 0.7-M3.

[JordanMartinez]

Is this another case of #481?

[JordanMartinez]

I mean #345?

[JordanMartinez]

I just tested this with 0.7-M3 and your test fails in that version, too.

[JordanMartinez]

Closed by #509