krz/devianter

 1package devianter
 2
 3import "testing"
 4
 5// Regression: flattenComment's shape check used to read m[0] and m[len(m)-1]
 6// without a length check, so a comment with an empty markup body panicked with
 7// index out of range and killed the caller's process.
 8func TestFlattenCommentEmptyMarkup(t *testing.T) {
 9	if got := flattenComment(""); got != "" {
10		t.Errorf("want an empty comment for empty markup, got %q", got)
11	}
12}
13
14func TestFlattenComment(t *testing.T) {
15	// A newer, Draft.js-encoded body is flattened to its text.
16	draft := `{"blocks":[{"text":"hello there"}]}`
17	if got := flattenComment(draft); got != "hello there" {
18		t.Errorf("want the Draft.js block text, got %q", got)
19	}
20
21	// An older, plain-HTML body passes through untouched.
22	html := "<b>hello</b> there"
23	if got := flattenComment(html); got != html {
24		t.Errorf("want plain HTML passed through, got %q", got)
25	}
26
27	// Regression: the block loop used to assign rather than accumulate, so every
28	// block but the last was silently dropped and a multi-paragraph comment came
29	// back as its closing line only.
30	multi := `{"blocks":[{"text":"first"},{"text":"second"},{"text":"third"}]}`
31	if got, want := flattenComment(multi), "first\nsecond\nthird"; got != want {
32		t.Errorf("want every block, one per line:\n got %q\nwant %q", got, want)
33	}
34
35	// An empty block is a blank line in the comment, not something to skip.
36	blank := `{"blocks":[{"text":"first"},{"text":""},{"text":"third"}]}`
37	if got, want := flattenComment(blank), "first\n\nthird"; got != want {
38		t.Errorf("want an empty block preserved as a blank line:\n got %q\nwant %q", got, want)
39	}
40
41	// Brace-shaped markup that isn't a Draft.js document falls back to itself
42	// rather than to an empty string.
43	if got := flattenComment("{}"); got != "{}" {
44		t.Errorf("want the original markup when there are no blocks, got %q", got)
45	}
46
47	// A single brace satisfies neither end of the shape check.
48	if got := flattenComment("{"); got != "{" {
49		t.Errorf("want a lone brace passed through, got %q", got)
50	}
51}