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scroll.rs
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use std::ops::RangeInclusive;
mod helpers;
#[test]
fn scroll_regions() {
helpers::fixture("decstbm");
}
#[test]
fn origin_mode() {
helpers::fixture("origin_mode");
}
#[test]
fn scrollback() {
let mut parser = vt100::Parser::new(24, 80, 10);
parser.process(b"1\r\n2\r\n3\r\n4\r\n5\r\n6\r\n7\r\n8\r\n9\r\n10\r\n11\r\n12\r\n13\r\n14\r\n15\r\n16\r\n17\r\n18\r\n19\r\n20\r\n21\r\n22\r\n23\r\n24");
assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");
parser.process(b"\r\n25\r\n26\r\n27\r\n28\r\n29\r\n30");
assert_eq!(parser.screen().contents(), "7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30");
parser.screen_mut().set_scrollback(0);
assert_eq!(parser.screen().scrollback(), 0);
assert_eq!(parser.screen().contents(), "7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30");
parser.screen_mut().set_scrollback(1);
assert_eq!(parser.screen().scrollback(), 1);
assert_eq!(parser.screen().contents(), "6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29");
parser.screen_mut().set_scrollback(3);
assert_eq!(parser.screen().scrollback(), 3);
assert_eq!(parser.screen().contents(), "4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27");
parser.screen_mut().set_scrollback(6);
assert_eq!(parser.screen().scrollback(), 6);
assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");
parser.screen_mut().set_scrollback(7);
assert_eq!(parser.screen().scrollback(), 6);
assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");
parser.screen_mut().set_scrollback(0);
assert_eq!(parser.screen().scrollback(), 0);
assert_eq!(parser.screen().contents(), "7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30");
parser.screen_mut().set_scrollback(7);
assert_eq!(parser.screen().scrollback(), 6);
assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");
parser.process(b"\r\n31");
assert_eq!(parser.screen().scrollback(), 7);
assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");
parser.process(b"\r\n32");
assert_eq!(parser.screen().scrollback(), 8);
assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");
parser.process(b"\r\n33");
assert_eq!(parser.screen().scrollback(), 9);
assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");
parser.process(b"\r\n34");
assert_eq!(parser.screen().scrollback(), 10);
assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");
parser.process(b"\r\n35");
assert_eq!(parser.screen().scrollback(), 10);
assert_eq!(parser.screen().contents(), "2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25");
parser.process(b"\r\n36");
assert_eq!(parser.screen().scrollback(), 10);
assert_eq!(parser.screen().contents(), "3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26");
parser.screen_mut().set_scrollback(12);
assert_eq!(parser.screen().scrollback(), 10);
assert_eq!(parser.screen().contents(), "3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26");
parser.screen_mut().set_scrollback(0);
assert_eq!(parser.screen().scrollback(), 0);
assert_eq!(parser.screen().contents(), "13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36");
parser.process(b"\r\n37\r\n38");
assert_eq!(parser.screen().scrollback(), 0);
assert_eq!(parser.screen().contents(), "15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38");
parser.screen_mut().set_scrollback(5);
assert_eq!(parser.screen().scrollback(), 5);
assert_eq!(parser.screen().contents(), "10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33");
parser.process(b"\r\n39\r\n40");
assert_eq!(parser.screen().scrollback(), 7);
assert_eq!(parser.screen().contents(), "10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33");
}
#[test]
fn edge_of_screen() {
let mut parser = vt100::Parser::default();
let screen = parser.screen().clone();
parser.process(b"\x1b[31m\x1b[24;75Hfooba\x08r\x08\x1b[1@a");
assert_eq!(parser.screen().cursor_position(), (23, 79));
assert_eq!(parser.screen().contents(), "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n foobar");
assert_eq!(
parser.screen().contents_formatted(),
&b"\x1b[?25h\x1b[m\x1b[H\x1b[J\x1b[24;75H\x1b[31mfoobar\x1b[24;80H"[..]
);
assert_eq!(
parser.screen().contents_diff(&screen),
b"\x1b[24;75H\x1b[31mfoobar\x1b[24;80H"
);
}
#[test]
fn scrollback_larger_than_rows() {
let mut parser = vt100::Parser::new(3, 20, 10);
parser.process(gen_nums(1..=10, "\r\n").as_bytes());
// 1. Extra rows returned
parser.screen_mut().set_scrollback(4);
assert_eq!(parser.screen().contents(), gen_nums(4..=6, "\n"));
// 2. Subtraction overflow
parser.screen_mut().set_scrollback(10);
assert_eq!(parser.screen().contents(), gen_nums(1..=3, "\n"));
}
#[cfg(test)]
fn gen_nums(range: RangeInclusive<u8>, join: &str) -> String {
range
.map(|num| num.to_string())
.collect::<Vec<String>>()
.join(join)
}