restructuring for app<->editor, copy tests

editor/src/error.rs

@@ -9,6 +9,34 @@ use snafu::{Backtrace, ErrorCompat, Snafu};
 #[derive(Debug, Snafu)]
 #[snafu(visibility(pub))]
 pub enum EdError {
+    #[snafu(display("ClipboardReadFailed: could not get clipboard contents: {}", err_msg))]
+    ClipboardReadFailed { err_msg: String },
+
+    #[snafu(display("ClipboardWriteFailed: could not set clipboard contents: {}", err_msg))]
+    ClipboardWriteFailed { err_msg: String },
+
+    #[snafu(display("ClipboardInitFailed: could not initialize ClipboardContext: {}.", err_msg))]
+    ClipboardInitFailed { err_msg: String },
+
+    #[snafu(display("EdModelIsNone: editor model EdModel was never succesfully initiliazed."))]
+    EdModelIsNone { },
+
+    #[snafu(display(
+        "FileOpenFailed: failed to open file with path {} with the following error: {}.",
+        path_str,
+        err_msg
+    ))]
+    FileOpenFailed { path_str: String, err_msg: String },
+
+    #[snafu(display("InvalidSelection: {}.", err_msg))]
+    InvalidSelection {
+        err_msg: String,
+        backtrace: Backtrace,
+    },
+    
+    #[snafu(display("MissingGlyphDims: glyph_dim_rect_opt was None for model. It needs to be set using the example_code_glyph_rect function."))]
+    MissingGlyphDims { backtrace: Backtrace },
+
     #[snafu(display(
         "OutOfBounds: index {} was out of bounds for {} with length {}.",
         index,
@@ -22,33 +50,8 @@ pub enum EdError {
         backtrace: Backtrace,
     },
 
-    #[snafu(display("InvalidSelection: {}.", err_msg))]
-    InvalidSelection {
-        err_msg: String,
-        backtrace: Backtrace,
-    },
-
-    #[snafu(display("MissingGlyphDims: glyph_dim_rect_opt was None for model. It needs to be set using the example_code_glyph_rect function."))]
-    MissingGlyphDims { backtrace: Backtrace },
-
-    #[snafu(display(
-        "FileOpenFailed: failed to open file with path {} with the following error: {}.",
-        path_str,
-        err_msg
-    ))]
-    FileOpenFailed { path_str: String, err_msg: String },
-
     #[snafu(display("TextBufReadFailed: the file {} could be opened but we encountered the following error while trying to read it: {}.", path_str, err_msg))]
     TextBufReadFailed { path_str: String, err_msg: String },
-
-    #[snafu(display("ClipboardReadFailed: could not get clipboard contents: {}", err_msg))]
-    ClipboardReadFailed { err_msg: String },
-
-    #[snafu(display("ClipboardWriteFailed: could not set clipboard contents: {}", err_msg))]
-    ClipboardWriteFailed { err_msg: String },
-
-    #[snafu(display("ClipboardInitFailed: could not initialize ClipboardContext: {}.", err_msg))]
-    ClipboardInitFailed { err_msg: String },
 }
 
 pub type EdResult<T, E = EdError> = std::result::Result<T, E>;
@@ -101,3 +104,9 @@ fn contains_one_of(main_str: &str, contain_slice: &[&str]) -> bool {
 
     false
 }
+
+impl From<EdError> for String {
+    fn from(ed_error: EdError) -> Self {
+        format!("{}", ed_error)
+    }
+}

editor/src/lib.rs

@@ -25,7 +25,7 @@ use crate::graphics::style::CODE_FONT_SIZE;
 use crate::graphics::style::CODE_TXT_XY;
 use crate::mvc::app_model::AppModel;
 use crate::mvc::ed_model::EdModel;
-use crate::mvc::{ed_model, ed_view, ed_update};
+use crate::mvc::{ed_model, ed_view, app_update};
 use crate::resources::strings::NOTHING_OPENED;
 use crate::vec_result::get_res;
 use bumpalo::Bump;
@@ -213,7 +213,7 @@ fn run_event_loop(file_path_opt: Option<&Path>) -> Result<(), Box<dyn Error>> {
                 event: event::WindowEvent::ReceivedCharacter(ch),
                 ..
             } => {
-                if let Err(e) = ed_update::handle_new_char(&mut app_model, &ch) {
+                if let Err(e) = app_update::handle_new_char(&ch, &mut app_model) {
                     print_err(&e)
                 }
             }

editor/src/mvc/app_model.rs

@@ -1,6 +1,6 @@
 use super::ed_model::EdModel;
 use crate::error::{EdResult, print_err};
-use crate::error::EdError::{ClipboardReadFailed, ClipboardWriteFailed, ClipboardInitFailed};
+use crate::error::EdError::{ClipboardReadFailed, ClipboardWriteFailed, ClipboardInitFailed, EdModelIsNone};
 use clipboard::{ClipboardContext, ClipboardProvider};
 use std::fmt;
 
@@ -30,6 +30,22 @@ impl AppModel {
             clipboard_opt
         }
     }
+
+    pub fn get_ed_model(&self) -> EdResult<&EdModel> {
+        if let Some(ref ed_model) = self.ed_model_opt {
+            Ok(ed_model)
+        } else {
+            Err(EdModelIsNone {})
+        }   
+    }
+
+    pub fn get_ed_model_mut(&mut self) -> EdResult<& mut EdModel> {
+        if let Some(ref mut ed_model) = self.ed_model_opt {
+            Ok(ed_model)
+        } else {
+            Err(EdModelIsNone {})
+        }   
+    }
 }
 
 pub struct Clipboard {

editor/src/mvc/app_update.rs

@@ -5,6 +5,7 @@ use crate::error::EdResult;
 use crate::error::EdError::{ClipboardWriteFailed, ClipboardReadFailed};
 use winit::event::{ModifiersState, VirtualKeyCode};
 
+
 pub fn handle_copy(app_model: &mut AppModel) -> EdResult<()> {
     if let Some(ref mut ed_model) = app_model.ed_model_opt {
         if ed_model.has_focus {
@@ -90,3 +91,122 @@ pub fn pass_keydown_to_focused(
         }
     }
 }
+
+pub fn handle_new_char(received_char: &char, app_model: &mut AppModel) -> EdResult<()>  {
+    if let Some(ref mut ed_model) = app_model.ed_model_opt {
+        if ed_model.has_focus {
+            ed_update::handle_new_char(received_char, ed_model)?;
+        }
+    }
+
+    Ok(())
+}
+
+#[cfg(test)]
+pub mod test_app_update {
+    use crate::mvc::app_model::{AppModel, Clipboard};
+    use crate::mvc::app_update::{handle_copy, handle_paste};
+    use crate::mvc::ed_update::test_ed_update::{gen_caret_text_buf};
+    use crate::mvc::ed_model::{EdModel, Position, RawSelection};
+    use crate::selection::test_selection::{convert_selection_to_dsl, all_lines_vec};
+    use crate::text_buffer::TextBuffer;
+    use crate::error::EdResult;
+    use crate::error::EdError::ClipboardInitFailed;
+
+    pub fn mock_app_model(
+        text_buf: TextBuffer,
+        caret_pos: Position,
+        selection_opt: Option<RawSelection>,
+    ) -> AppModel {
+        AppModel::init(
+            Some(
+                EdModel {
+                    text_buf,
+                    caret_pos,
+                    selection_opt,
+                    glyph_dim_rect_opt: None,
+                    has_focus: true,
+                }
+            )
+        )
+    }
+
+    fn get_clipboard(app_model: &mut AppModel) -> EdResult<&mut Clipboard> {
+        if let Some(ref mut clipboard) = app_model.clipboard_opt {
+            Ok(clipboard)
+        } else {
+            Err(ClipboardInitFailed {
+                err_msg: "Clipboard was never initialized succesfully.".to_owned()
+            })
+        }   
+    }
+
+    fn assert_copy(
+        pre_lines_str: &[&str],
+        expected_clipboard_content: &str,
+    ) -> Result<(), String> {
+        let (caret_pos, selection_opt, pre_text_buf) = gen_caret_text_buf(pre_lines_str)?;
+
+        let mut app_model = mock_app_model(pre_text_buf, caret_pos, selection_opt);
+
+        handle_copy(&mut app_model)?;
+
+        let clipboard = get_clipboard(&mut app_model)?;
+
+        assert_eq!(
+            clipboard.get_content()?,
+            expected_clipboard_content
+        );
+
+        Ok(())
+    }
+
+    fn assert_paste(
+        pre_lines_str: &[&str],
+        clipboard_content: &str,
+        expected_post_lines_str: &[&str],
+    ) -> Result<(), String> {
+        let (caret_pos, selection_opt, pre_text_buf) = gen_caret_text_buf(pre_lines_str)?;
+
+        let mut app_model = mock_app_model(pre_text_buf, caret_pos, selection_opt);
+        let clipboard = get_clipboard(&mut app_model)?;
+        clipboard.set_content(clipboard_content.to_owned())?;
+
+        handle_paste(&mut app_model)?;
+
+        let ed_model = app_model.get_ed_model()?;
+        let mut text_buf_lines = all_lines_vec(&ed_model.text_buf);
+        let post_lines_str = convert_selection_to_dsl(
+            ed_model.selection_opt,
+            ed_model.caret_pos,
+            &mut text_buf_lines
+        )?;
+
+        assert_eq!(
+            post_lines_str,
+            expected_post_lines_str
+        );
+
+        Ok(())
+    }
+
+    #[test]
+    fn copy() -> Result<(), String> {
+        assert_copy(&["[a]|"], "a")?;
+        assert_copy(&["|[b]"], "b")?;
+        assert_copy(&["a[ ]|"], " ")?;
+        assert_copy(&["[ ]|b"], " ")?;
+        assert_copy(&["a\n", "[b\n", "]|"], "b\n")?;
+        assert_copy(&["[a\n", " b\n", "]|"], "a\n b\n")?;
+        assert_copy(&["abc\n", "d[ef\n", "ghi]|\n", "jkl"], "ef\nghi")?;
+
+        Ok(())
+    }
+
+    #[test]
+    fn paste() -> Result<(), String> {
+        assert_paste(&["|"], "", &["|"])?;
+
+        Ok(())
+    }
+}

editor/src/mvc/ed_update.rs

@@ -319,8 +319,7 @@ fn del_selection(selection: RawSelection, ed_model: &mut EdModel) -> EdResult<()
     Ok(())
 }
 
-pub fn handle_new_char(app_model: &mut AppModel, received_char: &char) -> EdResult<()> {
-    if let Some(ref mut ed_model) = app_model.ed_model_opt {
+pub fn handle_new_char(received_char: &char, ed_model: &mut EdModel) -> EdResult<()> {
     let old_caret_pos = ed_model.caret_pos;
 
     match received_char {
@@ -379,7 +378,6 @@ pub fn handle_new_char(app_model: &mut AppModel, received_char: &char) -> EdResu
             ed_model.selection_opt = None;
         }
     }
-    }
 
     Ok(())
 }
@@ -399,16 +397,16 @@ pub fn handle_key_down(
 }
 
 #[cfg(test)]
-mod test_update {
-    use crate::mvc::app_model::AppModel;
-    use crate::mvc::ed_model::{EdModel, Position, RawSelection};
+pub mod test_ed_update {
+    use crate::mvc::app_update::test_app_update::{mock_app_model};
+    use crate::mvc::ed_model::{Position, RawSelection};
     use crate::mvc::ed_update::handle_new_char;
     use crate::selection::test_selection::{
         all_lines_vec, convert_dsl_to_selection, convert_selection_to_dsl, text_buffer_from_dsl_str,
     };
     use crate::text_buffer::TextBuffer;
 
-    fn gen_caret_text_buf(
+    pub fn gen_caret_text_buf(
         lines: &[&str],
     ) -> Result<(Position, Option<RawSelection>, TextBuffer), String> {
         let lines_string_slice: Vec<String> = lines.iter().map(|l| l.to_string()).collect();
@@ -418,24 +416,6 @@ mod test_update {
         Ok((caret_pos, selection_opt, text_buf))
     }
 
-    fn mock_app_model(
-        text_buf: TextBuffer,
-        caret_pos: Position,
-        selection_opt: Option<RawSelection>,
-    ) -> AppModel {
-        AppModel::init(
-            Some(
-                EdModel {
-                    text_buf,
-                    caret_pos,
-                    selection_opt,
-                    glyph_dim_rect_opt: None,
-                    has_focus: true,
-                }
-            )
-        )
-    }
-
     fn assert_insert(
         pre_lines_str: &[&str],
         expected_post_lines_str: &[&str],
@@ -444,8 +424,9 @@ mod test_update {
         let (caret_pos, selection_opt, pre_text_buf) = gen_caret_text_buf(pre_lines_str)?;
 
         let mut app_model = mock_app_model(pre_text_buf, caret_pos, selection_opt);
+        let mut ed_model = app_model.get_ed_model_mut()?;
 
-        if let Err(e) = handle_new_char(&mut app_model, &new_char) {
+        if let Err(e) = handle_new_char(&new_char, ed_model) {
             return Err(e.to_string());
         }