Struct MockBufferExt 

pub struct MockBufferExt {
    BufferExt_expectations: MockBufferExt_BufferExt,
}

Extension trait for Buffer to provide extra functionalities.

Provides focused helpers for line fetching and text insertion at the current cursor position while surfacing Nvim errors via notify_error.

Fields

BufferExt_expectations: MockBufferExt_BufferExt

Implementations

impl MockBufferExt

pub fn checkpoint(&mut self)

Validate that all current expectations for all methods have been satisfied, and discard them.

pub fn new() -> Self

Create a new mock object with no expectations.

This method will not be generated if the real struct already has a new method. However, it will be generated if the struct implements a trait with a new method. The trait’s new method can still be called like <MockX as TraitY>::new

impl MockBufferExt

pub fn expect_get_line(&mut self) -> &mut Expectation

Create an Expectation for mocking the get_line method

pub fn expect_get_lines(&mut self) -> &mut Expectation

Create an Expectation for mocking the get_lines method

pub fn expect_get_text_between(&mut self) -> &mut Expectation

Create an Expectation for mocking the get_text_between method

pub fn expect_get_buf_type(&mut self) -> &mut Expectation

Create an Expectation for mocking the get_buf_type method

pub fn expect_get_channel(&mut self) -> &mut Expectation

Create an Expectation for mocking the get_channel method

pub fn expect_set_text_at_cursor_pos(&mut self) -> &mut Expectation

Create an Expectation for mocking the set_text_at_cursor_pos method

pub fn expect_is_terminal(&mut self) -> &mut Expectation

Create an Expectation for mocking the is_terminal method

pub fn expect_send_command(&mut self) -> &mut Expectation

Create an Expectation for mocking the send_command method

pub fn expect_get_pid(&mut self) -> &mut Expectation

Create an Expectation for mocking the get_pid method

Trait Implementations

impl BufferExt for MockBufferExt

Extension trait for Buffer to provide extra functionalities.

Provides focused helpers for line fetching and text insertion at the current cursor position while surfacing Nvim errors via notify_error.

fn get_line(&self, idx: usize) -> Result<String>

Fetch a single line from a Buffer by 0-based index.

Returns a color_eyre::Result with the line as nvim_oxi::String. Errors if the line does not exist at idx.

Errors

• Fetching the line via nvim_buf_get_lines fails.
• The requested index is out of range (no line returned).

fn get_lines( &self, line_range: RangeInclusive<usize>, strict_indexing: bool, ) -> Result<Box<dyn SuperIterator<String>>, Error>

Retrieves a range of lines from the buffer.

Errors

• If strict_indexing is true and the range is out of bounds.
• If the Nvim API call to fetch lines fails.

Rationale

This is a thin wrapper around nvim_oxi::api::Buffer::get_lines to enable unit testing of the default trait method BufferExt::get_text_between.

fn get_text_between( &self, start: (usize, usize), end: (usize, usize), boundary: TextBoundary, ) -> Result<String>

Get text from a nvim_oxi::api::Buffer.

Retrieves text from the specified start position to end position, respecting the given boundary.

Errors

• If substring extraction fails due to invalid indices.

fn get_buf_type(&self) -> Option<String>

Retrieves the buffer type via the buftype option.

Queries Nvim for the buffer type option and returns the value. Errors are handled internally by notifying Nvim and converting to None.

Rationale

Errors are notified directly to Nvim because this is the behavior wanted in all cases.

fn set_text_at_cursor_pos(&mut self, text: &str)

Inserts text at the current cursor position in the active buffer.

Obtains the current CursorPosition, converts the 1-based row to 0-based for Nvim’s set_text call, and inserts text without replacing existing content (start_col == end_col). Errors are reported via notify_error. Silently returns if cursor position cannot be fetched.

fn get_pid(&self) -> Result<String>

Retrieves the process ID associated with the buffer.

Errors

• If the buffer name cannot be retrieved.
• If the buffer is a terminal but the name format is invalid.
• If the Neovim getpid function call fails.

fn get_channel(&self) -> Option<u32>

fn is_terminal(&self) -> bool

fn send_command(&self, cmd: &str) -> Option<()>

impl Debug for MockBufferExt

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for MockBufferExt

fn default() -> Self

Returns the “default value” for a type.