[Init] Initial commit - NetMesh terminal manager

application/state/sftp/transferProgressMetadata.test.ts

@@ -0,0 +1,65 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import {
+  hasNewSourceFingerprint,
+  resolveDurableCheckpointBytes,
+  shouldApplyTransferProgress,
+} from "./transferProgressMetadata";
+
+test("source fingerprint metadata changes bypass ordinary progress throttling", () => {
+  assert.equal(hasNewSourceFingerprint("sha256:old", "sha256:new"), true);
+  assert.equal(hasNewSourceFingerprint("sha256:same", "sha256:same"), false);
+  assert.equal(shouldApplyTransferProgress({
+    elapsedMs: 10,
+    transferred: 20,
+    total: 100,
+    incomingSourceFingerprint: "sha256:new",
+  }), true);
+  assert.equal(shouldApplyTransferProgress({
+    elapsedMs: 10,
+    transferred: 20,
+    total: 100,
+  }), false);
+  // Below the UI floor (400ms) ordinary ticks stay suppressed.
+  assert.equal(shouldApplyTransferProgress({
+    elapsedMs: 250,
+    transferred: 20,
+    total: 100,
+  }), false);
+  assert.equal(shouldApplyTransferProgress({
+    elapsedMs: 400,
+    transferred: 20,
+    total: 100,
+  }), true);
+  // Completion always paints even inside the throttle window.
+  assert.equal(shouldApplyTransferProgress({
+    elapsedMs: 10,
+    transferred: 100,
+    total: 100,
+  }), true);
+});
+
+test("durable checkpoint prefers contiguous bridge offset over high-water transferred", () => {
+  // Soft-drain: transferred=3MB, contiguous hole-free offset still 1MB.
+  assert.equal(resolveDurableCheckpointBytes({
+    transferred: 3 * 1024 * 1024,
+    previousCheckpoint: 512 * 1024,
+    incomingCheckpoint: 1024 * 1024,
+    status: "pausing",
+  }), 1024 * 1024);
+
+  // While paused, missing contiguous field must not advance from high-water.
+  assert.equal(resolveDurableCheckpointBytes({
+    transferred: 9_000_000,
+    previousCheckpoint: 1000,
+    status: "paused",
+  }), 1000);
+
+  // Active stream without explicit contiguous still uses transferred.
+  assert.equal(resolveDurableCheckpointBytes({
+    transferred: 500,
+    previousCheckpoint: 100,
+    status: "transferring",
+  }), 500);
+});