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package flamegraph
import "testing"
func TestAnimationStateConvergesToTarget(t *testing.T) {
state := NewAnimationState(30, 6.0, 1.0)
state.SetTargets([]tuiFrame{{Path: "root", Col: 0, Width: 10}})
state.SetTargets([]tuiFrame{{Path: "root", Col: 100, Width: 50}})
active := true
for i := 0; i < 180 && active; i++ {
active = state.Tick(0)
}
if active {
t.Fatalf("expected springs to settle within 180 ticks")
}
frames := state.CurrentFrames()
if len(frames) != 1 {
t.Fatalf("expected one interpolated frame, got %d", len(frames))
}
if frames[0].Col != 100 || frames[0].Width != 50 {
t.Fatalf("expected settled frame at col=100 width=50, got col=%d width=%d", frames[0].Col, frames[0].Width)
}
if state.Tick(0) {
t.Fatalf("expected settled animation to remain inactive")
}
}
func TestAnimationStateHandlesAddedAndRemovedFrames(t *testing.T) {
state := NewAnimationState(30, 6.0, 1.0)
state.SetTargets([]tuiFrame{
{Path: "root", Col: 0, Width: 20},
{Path: "root\x1fchild", Col: 20, Width: 20},
})
if got := len(state.CurrentFrames()); got != 2 {
t.Fatalf("expected 2 frames after initial targets, got %d", got)
}
state.SetTargets([]tuiFrame{
{Path: "root\x1fchild", Col: 40, Width: 30},
})
frames := state.CurrentFrames()
if len(frames) != 1 {
t.Fatalf("expected removed frame to be dropped, got %d frames", len(frames))
}
if frames[0].Path != "root\x1fchild" {
t.Fatalf("expected remaining frame path root\\x1fchild, got %q", frames[0].Path)
}
}
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