feat(compatibility): vim working!

10 files changed, 269 insertions, 0 deletions

diff --git a/src/tests/fixtures/vim_ctrl_d b/src/tests/fixtures/vim_ctrl_d
new file mode 100644
index 00000000..1f4929b8
--- /dev/null
+++ b/src/tests/fixtures/vim_ctrl_d
diff --git a/src/tests/fixtures/vim_ctrl_u b/src/tests/fixtures/vim_ctrl_u
new file mode 100644
index 00000000..063eb231
--- /dev/null
+++ b/src/tests/fixtures/vim_ctrl_u
diff --git a/src/tests/fixtures/vim_scroll_region_down b/src/tests/fixtures/vim_scroll_region_down
new file mode 100644
index 00000000..cd2061d2
--- /dev/null
+++ b/src/tests/fixtures/vim_scroll_region_down
diff --git a/src/tests/integration/compatibility.rs b/src/tests/integration/compatibility.rs
index e5e10061..cd04d354 100644
--- a/src/tests/integration/compatibility.rs
+++ b/src/tests/integration/compatibility.rs
@@ -88,3 +88,80 @@ pub fn fish_select_tab_completion_options() {
         assert_snapshot!(snapshot);
     }
 }
+
+#[test]
+pub fn vim_scroll_region_down () {
+    // here we test a case where vim defines the scroll region as lesser than the screen row count
+    // and then scrolls down
+    // the region is defined here by vim as 1-26 (there are 28 rows)
+    // then the cursor is moved to line 26 and a new line is added
+    // what should happen is that the first line in the scroll region (1) is deleted
+    // and an empty line is inserted in the last scroll region line (26)
+    // this tests also has other steps afterwards that fills the line with the next line in the
+    // file
+    // experience appear to the user
+    let fake_win_size = Winsize {
+        ws_col: 116,
+        ws_row: 28,
+        ws_xpixel: 0,
+        ws_ypixel: 0,
+    };
+    let fixture_name = "vim_scroll_region_down";
+    let mut fake_input_output = get_fake_os_input(&fake_win_size, fixture_name);
+    fake_input_output.add_terminal_input(&[17]); // quit (ctrl-q)
+    start(Box::new(fake_input_output.clone()));
+    let output_frames = fake_input_output.stdout_writer.output_frames.lock().unwrap();
+    let snapshots = get_output_frame_snapshots(&output_frames, &fake_win_size);
+    for snapshot in snapshots {
+        assert_snapshot!(snapshot);
+    }
+}
+
+#[test]
+pub fn vim_ctrl_d() {
+    // in vim ctrl-d moves down half a page
+    // in this case, it sends the terminal the csi 'M' directive, which tells it to delete X (13 in
+    // this case) lines inside the scroll region and push the other lines up
+    // what happens here is that 13 lines are deleted and instead 13 empty lines are added at the
+    // end of the scroll region
+    // vim makes sure to fill these empty lines with the rest of the file
+    let fake_win_size = Winsize {
+        ws_col: 116,
+        ws_row: 28,
+        ws_xpixel: 0,
+        ws_ypixel: 0,
+    };
+    let fixture_name = "vim_ctrl_d";
+    let mut fake_input_output = get_fake_os_input(&fake_win_size, fixture_name);
+    fake_input_output.add_terminal_input(&[17]); // quit (ctrl-q)
+    start(Box::new(fake_input_output.clone()));
+    let output_frames = fake_input_output.stdout_writer.output_frames.lock().unwrap();
+    let snapshots = get_output_frame_snapshots(&output_frames, &fake_win_size);
+    for snapshot in snapshots {
+        assert_snapshot!(snapshot);
+    }
+}
+
+#[test]
+pub fn vim_ctrl_u() {
+    // in vim ctrl-u moves up half a page
+    // in this case, it sends the terminal the csi 'L' directive, which tells it to insert X (13 in
+    // this case) lines at the cursor, pushing away (deleting) the last line in the scroll region
+    // this causes the effect of scrolling up X lines (vim replaces the lines with the ones in the
+    // file above the current content)
+    let fake_win_size = Winsize {
+        ws_col: 116,
+        ws_row: 28,
+        ws_xpixel: 0,
+        ws_ypixel: 0,
+    };
+    let fixture_name = "vim_ctrl_u";
+    let mut fake_input_output = get_fake_os_input(&fake_win_size, fixture_name);
+    fake_input_output.add_terminal_input(&[17]); // quit (ctrl-q)
+    start(Box::new(fake_input_output.clone()));
+    let output_frames = fake_input_output.stdout_writer.output_frames.lock().unwrap();
+    let snapshots = get_output_frame_snapshots(&output_frames, &fake_win_size);
+    for snapshot in snapshots {
+        assert_snapshot!(snapshot);
+    }
+}
diff --git a/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_ctrl_d-2.snap b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_ctrl_d-2.snap
new file mode 100644
index 00000000..5a3f7ce5
--- /dev/null
+++ b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_ctrl_d-2.snap
@@ -0,0 +1,32 @@
+---
+source: src/tests/integration/compatibility.rs
+expression: snapshot
+---
+  2 line15                                                                                                          
+  1 line16                                                                                                          
+17  line17                                                                                                          
+  1 line18                                                                                                          
+  2 line19                                                                                                          
+  3 line20                                                                                                          
+  4 line21                                                                                                          
+  5 line22                                                                                                          
+  6 line23                                                                                                          
+  7 line24                                                                                                          
+  8 line25                                                                                                          
+  9 line26                                                                                                          
+ 10 line27                                                                                                          
+ 11 line28                                                                                                          
+ 12 line29                                                                                                          
+ 13 line30                                                                                                          
+ 14 line31                                                                                                          
+ 15 line32                                                                                                          
+ 16 line33                                                                                                          
+ 17 line34                                                                                                          
+ 18 line35                                                                                                          
+ 19 line36                                                                                                          
+ 20 line37                                                                                                          
+ 21 line38                                                                                                          
+ 22 line39                                                                                                          
+ NORMAL  testfile.rs                                                              unix | utf-8 | rust   40%   17:1  
+"/tmp/testfile.rs" 42L, 285C                                                                                        
+Bye from Mosaic!█                                                                                                   
diff --git a/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_ctrl_d.snap b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_ctrl_d.snap
new file mode 100644
index 00000000..b4eee2ea
--- /dev/null
+++ b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_ctrl_d.snap
@@ -0,0 +1,32 @@
+---
+source: src/tests/integration/compatibility.rs
+expression: snapshot
+---
+  3 line14                                                                                                          
+  2 line15                                                                                                          
+  1 line16                                                                                                          
+17  █ine17                                                                                                          
+  1 line18                                                                                                          
+  2 line19                                                                                                          
+  3 line20                                                                                                          
+  4 line21                                                                                                          
+  5 line22                                                                                                          
+  6 line23                                                                                                          
+  7 line24                                                                                                          
+  8 line25                                                                                                          
+  9 line26                                                                                                          
+ 10 line27                                                                                                          
+ 11 line28                                                                                                          
+ 12 line29                                                                                                          
+ 13 line30                                                                                                          
+ 14 line31                                                                                                          
+ 15 line32                                                                                                          
+ 16 line33                                                                                                          
+ 17 line34                                                                                                          
+ 18 line35                                                                                                          
+ 19 line36                                                                                                          
+ 20 line37                                                                                                          
+ 21 line38                                                                                                          
+ 22 line39                                                                                                          
+ NORMAL  testfile.rs                                                              unix | utf-8 | rust   40%   17:1  
+"/tmp/testfile.rs" 42L, 285C                                                                                        
diff --git a/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_ctrl_u-2.snap b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_ctrl_u-2.snap
new file mode 100644
index 00000000..82d924a0
--- /dev/null
+++ b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_ctrl_u-2.snap
@@ -0,0 +1,32 @@
+---
+source: src/tests/integration/compatibility.rs
+expression: snapshot
+---
+ 21 line5                                                                                                           
+ 20 line6                                                                                                           
+ 19 line7                                                                                                           
+ 18 line8                                                                                                           
+ 17 line9                                                                                                           
+ 16 line10                                                                                                          
+ 15 line11                                                                                                          
+ 14 line12                                                                                                          
+ 13 line13                                                                                                          
+ 12 line14                                                                                                          
+ 11 line15                                                                                                          
+ 10 line16                                                                                                          
+  9 line17                                                                                                          
+  8 line18                                                                                                          
+  7 line19                                                                                                          
+  6 line20                                                                                                          
+  5 line21                                                                                                          
+  4 line22                                                                                                          
+  3 line23                                                                                                          
+  2 line24                                                                                                          
+  1 line25                                                                                                          
+26  line26                                                                                                          
+  1 line27                                                                                                          
+  2 line28                                                                                                          
+  3 line29                                                                                                          
+ NORMAL  testfile.rs                                                              unix | utf-8 | rust   61%   26:1  
+"/tmp/testfile.rs" 42L, 285C                                                                                        
+Bye from Mosaic!█                                                                                                   
diff --git a/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_ctrl_u.snap b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_ctrl_u.snap
new file mode 100644
index 00000000..cdb821f9
--- /dev/null
+++ b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_ctrl_u.snap
@@ -0,0 +1,32 @@
+---
+source: src/tests/integration/compatibility.rs
+expression: snapshot
+---
+ 22 line4                                                                                                           
+ 21 line5                                                                                                           
+ 20 line6                                                                                                           
+ 19 line7                                                                                                           
+ 18 line8                                                                                                           
+ 17 line9                                                                                                           
+ 16 line10                                                                                                          
+ 15 line11                                                                                                          
+ 14 line12                                                                                                          
+ 13 line13                                                                                                          
+ 12 line14                                                                                                          
+ 11 line15                                                                                                          
+ 10 line16                                                                                                          
+  9 line17                                                                                                          
+  8 line18                                                                                                          
+  7 line19                                                                                                          
+  6 line20                                                                                                          
+  5 line21                                                                                                          
+  4 line22                                                                                                          
+  3 line23                                                                                                          
+  2 line24                                                                                                          
+  1 line25                                                                                                          
+26  █ine26                                                                                                          
+  1 line27                                                                                                          
+  2 line28                                                                                                          
+  3 line29                                                                                                          
+ NORMAL  testfile.rs                                                              unix | utf-8 | rust   61%   26:1  
+"/tmp/testfile.rs" 42L, 285C                                                                                        
diff --git a/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_scroll_region_down-2.snap b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_scroll_region_down-2.snap
new file mode 100644
index 00000000..a897b376
--- /dev/null
+++ b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_scroll_region_down-2.snap
@@ -0,0 +1,32 @@
+---
+source: src/tests/integration/compatibility.rs
+expression: snapshot
+---
+ 21 line3                                                                                                           
+ 20 line4                                                                                                           
+ 19 line5                                                                                                           
+ 18 line6                                                                                                           
+ 17 line7                                                                                                           
+ 16 line8                                                                                                           
+ 15 line9                                                                                                           
+ 14 line10                                                                                                          
+ 13 line11                                                                                                          
+ 12 line12                                                                                                          
+ 11 line13                                                                                                          
+ 10 line14                                                                                                          
+  9 line15                                                                                                          
+  8 line16                                                                                                          
+  7 line17                                                                                                          
+  6 line18                                                                                                          
+  5 line19                                                                                                          
+  4 line20                                                                                                          
+  3 line21                                                                                                          
+  2 line22                                                                                                          
+  1 line23                                                                                                          
+24  line24                                                                                                          
+  1 line25                                                                                                          
+  2 line26                                                                                                          
+  3 line27                                                                                                          
+ NORMAL  testfile.rs                                                              unix | utf-8 | rust   57%   24:1  
+"/tmp/testfile.rs" 42L, 285C                                                                                        
+Bye from Mosaic!█                                                                                                   
diff --git a/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_scroll_region_down.snap b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_scroll_region_down.snap
new file mode 100644
index 00000000..3ca2370e
--- /dev/null
+++ b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__vim_scroll_region_down.snap
@@ -0,0 +1,32 @@
+---
+source: src/tests/integration/compatibility.rs
+expression: snapshot
+---
+ 22 line2                                                                                                           
+ 21 line3                                                                                                           
+ 20 line4                                                                                                           
+ 19 line5                                                                                                           
+ 18 line6                                                                                                           
+ 17 line7                                                                                                           
+ 16 line8                                                                                                           
+ 15 line9                                                                                                           
+ 14 line10                                                                                                          
+ 13 line11                                                                                                          
+ 12 line12                                                                                                          
+ 11 line13                                                                                                          
+ 10 line14                                                                                                          
+  9 line15                                                                                                          
+  8 line16                                                                                                          
+  7 line17                                                                                                          
+  6 line18                                                                                                          
+  5 line19                                                                                                          
+  4 line20                                                                                                          
+  3 line21                                                                                                          
+  2 line22                                                                                                          
+  1 line23                                                                                                          
+24  █ine24                                                                                                          
+  1 line25                                                                                                          
+  2 line26                                                                                                          
+  3 line27                                                                                                          
+ NORMAL  testfile.rs                                                              unix | utf-8 | rust   57%   24:1  
+"/tmp/testfile.rs" 42L, 285C