XMLWriter.writeComment

1 import std.array : appender;
2 import std.exception : assertThrown;
3 
4 auto writer = xmlWriter(appender!string());
5 
6 writer.writeComment(" And so it begins... ", Newline.no);
7 writer.writeStartTag("root");
8 writer.writeComment("A comment");
9 writer.writeComment("Another comment");
10 writer.writeComment("No preceding newline", Newline.no);
11 writer.writeComment("A comment\nwith a newline");
12 writer.writeComment("Another newline\nbut no indent",
13                     InsertIndent.no);
14 writer.writeStartTag("tag");
15 writer.writeComment("Deeper comment");
16 writer.writeEndTag("tag");
17 writer.writeEndTag("root");
18 writer.writeComment(" And so it ends... ");
19 
20 assert(writer.output.data ==
21        "<!-- And so it begins... -->\n" ~
22        "<root>\n" ~
23        "    <!--A comment-->\n" ~
24        "    <!--Another comment--><!--No preceding newline-->\n" ~
25        "    <!--A comment\n" ~
26        "        with a newline-->\n" ~
27        "    <!--Another newline\n" ~
28        "but no indent-->\n" ~
29        "    <tag>\n" ~
30        "        <!--Deeper comment-->\n" ~
31        "    </tag>\n" ~
32        "</root>\n" ~
33        "<!-- And so it ends... -->");
34 
35 // -- is not legal in an XML comment.
36 assertThrown!XMLWritingException(writer.writeComment("foo--bar"));
37 
38 // - is not legal at the end of an XML comment.
39 assertThrown!XMLWritingException(writer.writeComment("foo-"));
40 
41 // Unchanged after an XMLWritingException is thrown.
42 assert(writer.output.data ==
43        "<!-- And so it begins... -->\n" ~
44        "<root>\n" ~
45        "    <!--A comment-->\n" ~
46        "    <!--Another comment--><!--No preceding newline-->\n" ~
47        "    <!--A comment\n" ~
48        "        with a newline-->\n" ~
49        "    <!--Another newline\n" ~
50        "but no indent-->\n" ~
51        "    <tag>\n" ~
52        "        <!--Deeper comment-->\n" ~
53        "    </tag>\n" ~
54        "</root>\n" ~
55        "<!-- And so it ends... -->");