Merge pull request #1147 from jwilm/scrollbackv0.2.0

Scrollback

1 files changed, 141 insertions, 0 deletions

diff --git a/src/grid/tests.rs b/src/grid/tests.rs
new file mode 100644
index 00000000..e136e3b3
--- /dev/null
+++ b/src/grid/tests.rs
@@ -0,0 +1,141 @@
+// Copyright 2016 Joe Wilm, The Alacritty Project Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Tests for the Gird
+
+use super::{Grid, BidirectionalIterator};
+use index::{Point, Line, Column};
+
+// Scroll up moves lines upwards
+#[test]
+fn scroll_up() {
+    println!();
+
+    let mut grid = Grid::new(Line(10), Column(1), 0, 0);
+    for i in 0..10 {
+        grid[Line(i)][Column(0)] = i;
+    }
+
+    println!("grid: {:?}", grid);
+
+    grid.scroll_up(&(Line(0)..Line(10)), Line(2), &0);
+
+    println!("grid: {:?}", grid);
+
+    assert_eq!(grid[Line(0)][Column(0)], 2);
+    assert_eq!(grid[Line(0)].occ, 1);
+    assert_eq!(grid[Line(1)][Column(0)], 3);
+    assert_eq!(grid[Line(1)].occ, 1);
+    assert_eq!(grid[Line(2)][Column(0)], 4);
+    assert_eq!(grid[Line(2)].occ, 1);
+    assert_eq!(grid[Line(3)][Column(0)], 5);
+    assert_eq!(grid[Line(3)].occ, 1);
+    assert_eq!(grid[Line(4)][Column(0)], 6);
+    assert_eq!(grid[Line(4)].occ, 1);
+    assert_eq!(grid[Line(5)][Column(0)], 7);
+    assert_eq!(grid[Line(5)].occ, 1);
+    assert_eq!(grid[Line(6)][Column(0)], 8);
+    assert_eq!(grid[Line(6)].occ, 1);
+    assert_eq!(grid[Line(7)][Column(0)], 9);
+    assert_eq!(grid[Line(7)].occ, 1);
+    assert_eq!(grid[Line(8)][Column(0)], 0); // was 0
+    assert_eq!(grid[Line(8)].occ, 0);
+    assert_eq!(grid[Line(9)][Column(0)], 0); // was 1
+    assert_eq!(grid[Line(9)].occ, 0);
+}
+
+// Scroll down moves lines downwards
+#[test]
+fn scroll_down() {
+    println!();
+
+    let mut grid = Grid::new(Line(10), Column(1), 0, 0);
+    for i in 0..10 {
+        grid[Line(i)][Column(0)] = i;
+    }
+
+    println!("grid: {:?}", grid);
+
+    grid.scroll_down(&(Line(0)..Line(10)), Line(2), &0);
+
+    println!("grid: {:?}", grid);
+
+    assert_eq!(grid[Line(0)][Column(0)], 0); // was 8
+    assert_eq!(grid[Line(0)].occ, 0);
+    assert_eq!(grid[Line(1)][Column(0)], 0); // was 9
+    assert_eq!(grid[Line(1)].occ, 0);
+    assert_eq!(grid[Line(2)][Column(0)], 0);
+    assert_eq!(grid[Line(2)].occ, 1);
+    assert_eq!(grid[Line(3)][Column(0)], 1);
+    assert_eq!(grid[Line(3)].occ, 1);
+    assert_eq!(grid[Line(4)][Column(0)], 2);
+    assert_eq!(grid[Line(4)].occ, 1);
+    assert_eq!(grid[Line(5)][Column(0)], 3);
+    assert_eq!(grid[Line(5)].occ, 1);
+    assert_eq!(grid[Line(6)][Column(0)], 4);
+    assert_eq!(grid[Line(6)].occ, 1);
+    assert_eq!(grid[Line(7)][Column(0)], 5);
+    assert_eq!(grid[Line(7)].occ, 1);
+    assert_eq!(grid[Line(8)][Column(0)], 6);
+    assert_eq!(grid[Line(8)].occ, 1);
+    assert_eq!(grid[Line(9)][Column(0)], 7);
+    assert_eq!(grid[Line(9)].occ, 1);
+}
+
+// Test that GridIterator works
+#[test]
+fn test_iter() {
+    info!("");
+
+    let mut grid = Grid::new(Line(5), Column(5), 0, 0);
+    for i in 0..5 {
+        for j in 0..5 {
+            grid[Line(i)][Column(j)] = i*5 + j;
+        }
+    }
+
+    info!("grid: {:?}", grid);
+
+    let mut iter = grid.iter_from(Point {
+        line: 4,
+        col: Column(0),
+    });
+
+    assert_eq!(None, iter.prev());
+    assert_eq!(Some(&1), iter.next());
+    assert_eq!(Column(1), iter.cur.col);
+    assert_eq!(4, iter.cur.line);
+
+    assert_eq!(Some(&2), iter.next());
+    assert_eq!(Some(&3), iter.next());
+    assert_eq!(Some(&4), iter.next());
+
+    // test linewrapping
+    assert_eq!(Some(&5), iter.next());
+    assert_eq!(Column(0), iter.cur.col);
+    assert_eq!(3, iter.cur.line);
+
+    assert_eq!(Some(&4), iter.prev());
+    assert_eq!(Column(4), iter.cur.col);
+    assert_eq!(4, iter.cur.line);
+
+
+    // test that iter ends at end of grid
+    let mut final_iter = grid.iter_from(Point {
+        line: 0,
+        col: Column(4),
+    });
+    assert_eq!(None, final_iter.next());
+    assert_eq!(Some(&23), final_iter.prev());
+}