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|
mod common;
use commands::{
BatchCommand, Command, InsertElementCommand, InsertElementPlacement, RetainSide,
ShiftSplitRemainderCommand, SplitElementsCommand,
};
use common::{
FREEZE_SECONDS, SPLIT_SECONDS, VIDEO_SECONDS, build_freeze_image_element, seconds,
seed_project_with_video,
};
use scene::{Element, ElementRef, Project};
use time::MediaTime;
fn build_freeze_batch(track_id: &str) -> BatchCommand {
let split = SplitElementsCommand::new(
vec![ElementRef {
track_id: track_id.to_string(),
element_id: "video-1".to_string(),
}],
seconds(SPLIT_SECONDS),
RetainSide::Both,
);
let right_side = split.right_side_handle();
let shift = ShiftSplitRemainderCommand::new(
right_side,
seconds(SPLIT_SECONDS) + seconds(FREEZE_SECONDS),
);
let insert = InsertElementCommand::new(
build_freeze_image_element(),
InsertElementPlacement::Explicit {
track_id: track_id.to_string(),
},
);
BatchCommand::new(vec![Box::new(split), Box::new(shift), Box::new(insert)])
}
fn sorted_main_elements(project: &Project) -> Vec<Element> {
let scene = project
.scenes
.iter()
.find(|scene| scene.id == project.current_scene_id)
.expect("active scene");
let mut elements = scene.tracks.main.elements().to_vec();
elements.sort_by_key(|element| element.base().start_time);
elements
}
fn element_type_name(element: &Element) -> &'static str {
match element {
Element::Video(_) => "video",
Element::Image(_) => "image",
Element::Text(_) => "text",
Element::Audio(_) => "audio",
Element::Sticker(_) => "sticker",
Element::Graphic(_) => "graphic",
Element::Effect(_) => "effect",
}
}
#[test]
fn splits_shifts_right_side_and_inserts_into_gap() {
let (mut project, track_id) = seed_project_with_video();
build_freeze_batch(&track_id)
.execute(&mut project)
.expect("execute");
let elements = sorted_main_elements(&project);
let type_names: Vec<&str> = elements.iter().map(element_type_name).collect();
assert_eq!(type_names, ["video", "image", "video"]);
let [left, image, right] = &elements[..] else {
panic!("expected three elements");
};
assert_eq!(left.base().start_time, MediaTime::ZERO);
assert_eq!(left.base().duration, seconds(SPLIT_SECONDS));
assert_eq!(image.base().start_time, seconds(SPLIT_SECONDS));
assert_eq!(image.base().duration, seconds(FREEZE_SECONDS));
assert_eq!(
right.base().start_time,
seconds(SPLIT_SECONDS) + seconds(FREEZE_SECONDS)
);
assert_eq!(
right.base().duration,
seconds(VIDEO_SECONDS - SPLIT_SECONDS)
);
}
#[test]
fn undo_restores_original_element_as_single_step() {
let (mut project, track_id) = seed_project_with_video();
let mut batch = build_freeze_batch(&track_id);
batch.execute(&mut project).expect("execute");
batch.undo(&mut project);
let scene = project
.scenes
.iter()
.find(|scene| scene.id == project.current_scene_id)
.expect("active scene");
let elements = scene.tracks.main.elements();
assert_eq!(elements.len(), 1);
assert_eq!(elements[0].base().id, "video-1");
assert_eq!(elements[0].base().start_time, MediaTime::ZERO);
assert_eq!(elements[0].base().duration, seconds(VIDEO_SECONDS));
}
#[test]
fn redo_after_undo_reapplies_shift_to_resplit_elements() {
let (mut project, track_id) = seed_project_with_video();
let mut batch = build_freeze_batch(&track_id);
batch.execute(&mut project).expect("execute");
batch.undo(&mut project);
batch.redo(&mut project).expect("redo");
let elements = sorted_main_elements(&project);
let type_names: Vec<&str> = elements.iter().map(element_type_name).collect();
assert_eq!(type_names, ["video", "image", "video"]);
let right = elements.last().expect("right element");
assert!(matches!(right, Element::Video(_)));
assert_eq!(
right.base().start_time,
seconds(SPLIT_SECONDS) + seconds(FREEZE_SECONDS)
);
}
#[test]
fn no_op_when_split_produces_no_right_side() {
let (mut project, track_id) = seed_project_with_video();
let split = SplitElementsCommand::new(
vec![ElementRef {
track_id: track_id.to_string(),
element_id: "video-1".to_string(),
}],
MediaTime::ZERO,
RetainSide::Both,
);
let right_side = split.right_side_handle();
let shift = ShiftSplitRemainderCommand::new(right_side, seconds(FREEZE_SECONDS));
let mut batch = BatchCommand::new(vec![Box::new(split), Box::new(shift)]);
batch.execute(&mut project).expect("execute");
batch.undo(&mut project);
let scene = project
.scenes
.iter()
.find(|scene| scene.id == project.current_scene_id)
.expect("active scene");
assert_eq!(scene.tracks.main.elements().len(), 1);
}
|
