fix attributes_formatted, remove attributes_diff

also improve the documentation and add more tests

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/attr.rs b/tests/attr.rs
index 64f4bd4..34ac7af 100644
--- a/tests/attr.rs
+++ b/tests/attr.rs
@@ -9,3 +9,15 @@ fn colors() {
 fn attrs() {
     helpers::fixture("attrs");
 }
+
+#[test]
+fn attributes_formatted() {
+    let mut parser = vt100::Parser::default();
+    assert_eq!(parser.screen().attributes_formatted(), b"\x1b[m");
+    parser.process(b"\x1b[32mfoo\x1b[41mbar\x1b[33mbaz");
+    assert_eq!(parser.screen().attributes_formatted(), b"\x1b[m\x1b[33;41m");
+    parser.process(b"\x1b[1m\x1b[39m");
+    assert_eq!(parser.screen().attributes_formatted(), b"\x1b[m\x1b[41;1m");
+    parser.process(b"\x1b[m");
+    assert_eq!(parser.screen().attributes_formatted(), b"\x1b[m");
+}