can1357
2e492a3076
- The mux pane-growth oracle treated every physical scroll as a logical append, but immutable-history recovery can recommit a corrected suffix after an off-screen mutation without advancing the shadow tape; exempt only changed shared history prefixes.
- The frame-neutral oracle compared prepared rows only; at narrow widths distinct raw rows prepare identically, so the renderer's raw-prefix divergence recovery recommits legitimately. Snapshot raw frames and allow declared transient growth.
- OSC66 spacer preservation intentionally composes six bounded context rows above the resize viewport; assert that exact bound instead of zero above-fold rendering.
Both oracle false positives reproduce identically at the PR head that introduced the harness (4cc9725037); three full randomized stress passes green after the fix.
78 lines
2.9 KiB
TypeScript
78 lines
2.9 KiB
TypeScript
import { describe, expect, it } from "bun:test";
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import { CURSOR_MARKER } from "@oh-my-pi/pi-tui/tui";
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import {
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compositeExpectedLineAt,
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cursorInsertionIndex,
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duplicateNonblankLines,
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expectedFrameFromLines,
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expectedScrollbackBuffer,
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multiplexerHistoryPrefixChanged,
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resolveExpectedOverlayLayout,
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runWidthEpochHeightAppendReplayRegression,
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runWidthEpochOverlayReplayRegression,
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scrollbackProbePositions,
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stripPlainTerminalText,
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} from "./render-stress-harness";
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const ESC = "\x1b";
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const BEL = "\x07";
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describe("render stress oracle helpers", () => {
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it("models capped native scrollback buffers", () => {
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expect(expectedScrollbackBuffer(["a"], 3, 2)).toEqual(["a", "", ""]);
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expect(expectedScrollbackBuffer(["0", "1", "2", "3", "4", "5"], 2, 3)).toEqual(["1", "2", "3", "4", "5"]);
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});
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it("chooses bounded scrollback probe positions", () => {
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expect(scrollbackProbePositions(40, 100, 10)).toEqual([0, 20, 40]);
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});
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it("distinguishes mux history replacement from live-tail updates", () => {
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expect(multiplexerHistoryPrefixChanged(["a", "b", "c"], 2, ["a", "b", "c", "d"], 2)).toBe(false);
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expect(multiplexerHistoryPrefixChanged(["a", "b", "c"], 2, ["x", "b", "c"], 2)).toBe(true);
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});
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it("detects only repeated nonblank frame lines", () => {
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expect([...duplicateNonblankLines(["alpha", "", "alpha", "beta", "beta"])]).toEqual(["alpha", "beta"]);
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});
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it("strips OSC hyperlinks and terminal styling from plain text", () => {
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const linked = `${ESC}]8;;https://example.test${BEL}${ESC}[31mlink${ESC}[0m${ESC}]8;;${BEL}`;
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expect(stripPlainTerminalText(linked)).toBe("link");
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});
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it("computes cursor insertion columns by terminal cells", () => {
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expect(cursorInsertionIndex("abcd", "middle", 80)).toBe(2);
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expect(cursorInsertionIndex("a界b", "wideBoundary", 3)).toBe(1);
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});
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it("builds expected frames with cursor and background-column oracles", () => {
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const frame = expectedFrameFromLines([`${ESC}[41mred${ESC}[0m plain`, `ab${CURSOR_MARKER}cd`], 20, 2);
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expect(frame.frame).toEqual(["red plain", "abcd"]);
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expect(frame.cursor).toEqual({ row: 1, col: 2 });
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expect(frame.backgroundColumns[0]).toEqual([0, 1, 2]);
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expect(frame.backgroundColumns[1]).toEqual([]);
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});
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it("resolves overlay layout anchors with margins", () => {
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expect(resolveExpectedOverlayLayout({ anchor: "bottom-right", margin: 1, width: 10 }, 3, 40, 10)).toEqual({
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width: 10,
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row: 6,
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col: 29,
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maxHeight: 8,
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});
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});
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it("composites overlay text by terminal columns", () => {
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expect(stripPlainTerminalText(compositeExpectedLineAt("abcdef", "XY", 2, 2, 6))).toBe("abXYef");
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});
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it("replays overlay-hidden growth across a multiplexer width epoch", async () => {
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await runWidthEpochOverlayReplayRegression();
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});
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it("replays append growth concurrent with a height shrink inside a multiplexer width epoch", async () => {
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await runWidthEpochHeightAppendReplayRegression();
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});
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});
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