chore: import upstream snapshot with attribution

tests/unit/compression/rtk-command-detector.test.ts

@@ -0,0 +1,118 @@
+import { describe, it } from "node:test";
+import assert from "node:assert/strict";
+import { readFileSync } from "node:fs";
+import { fileURLToPath } from "node:url";
+import path from "node:path";
+
+import {
+  detectCommandOutput,
+  detectCommandType,
+} from "../../../open-sse/services/compression/index.ts";
+
+const FIXTURES = path.join(path.dirname(fileURLToPath(import.meta.url)), "fixtures", "rtk");
+
+function fixture(name: string): string {
+  return readFileSync(path.join(FIXTURES, name), "utf8");
+}
+
+describe("RTK command detector", () => {
+  it("detects planned command output classes", () => {
+    assert.equal(
+      detectCommandType(fixture("git-status-sample.txt"), "git status").type,
+      "git-status"
+    );
+    assert.equal(detectCommandType(fixture("git-diff-sample.txt"), "git diff").type, "git-diff");
+    assert.equal(detectCommandType("commit abcdef1\nAuthor: A", "git log").type, "git-log");
+    assert.equal(
+      detectCommandType(fixture("vitest-output-sample.txt"), "vitest").type,
+      "test-vitest"
+    );
+    assert.equal(detectCommandType("FAIL test\nTests: 1 failed", "jest").type, "test-jest");
+    assert.equal(detectCommandType("FAILED test_a.py::test_a", "pytest").type, "test-pytest");
+    assert.equal(
+      detectCommandType(fixture("typescript-errors-sample.txt"), "tsc --noEmit").type,
+      "build-typescript"
+    );
+    assert.equal(
+      detectCommandType(fixture("eslint-output-sample.txt"), "eslint .").type,
+      "build-eslint"
+    );
+    assert.equal(
+      detectCommandType("CONTAINER ID   IMAGE   COMMAND", "docker ps").type,
+      "docker-ps"
+    );
+    assert.equal(detectCommandType(fixture("json-output-sample.txt")).type, "json-output");
+    assert.equal(detectCommandType("Error: boom\n    at fn").type, "generic-error");
+  });
+
+  it("detects RTK parity command output classes", () => {
+    const cases: Array<[string, string | null, string]> = [
+      ["* feature/rtk\n  main", "git branch", "git-branch"],
+      ["running 2 tests\ntest a ... FAILED\ntest result: FAILED", "cargo test", "test-cargo"],
+      ["--- FAIL: TestA\nFAIL\t./pkg\t0.1s", "go test ./...", "test-go"],
+      ["webpack 5.0.0 compiled with 1 error", "webpack", "build-webpack"],
+      ["vite v5.0.0\n✓ built in 100ms", "vite build", "build-vite"],
+      ["2026-05-02T00:00:00Z ERROR failed", "docker logs app", "docker-logs"],
+      ["./src/a.ts\n./src/b.ts", "find . -name '*.ts'", "shell-find"],
+      ["src/a.ts:1:match", "rg match", "shell-grep"],
+      ["found 1 vulnerabilities\ncritical severity", "npm audit", "npm-audit"],
+      ['Traceback (most recent call last):\n  File "a.py", line 1', null, "error-stacktrace"],
+      ["make[1]: Entering directory '/repo'\nmake: *** [all] Error 2", "make", "make"],
+      [
+        "Terraform will perform the following actions:\nPlan: 1 to add",
+        "terraform plan",
+        "terraform-plan",
+      ],
+      ["OpenTofu will perform the following actions:\nPlan: 1 to add", "tofu plan", "tofu-plan"],
+      ["Active: failed (Result: exit-code)", "systemctl status omniroute", "systemctl-status"],
+      ["Checked 12 files in 18ms. No fixes applied.", "biome check .", "biome"],
+      ["Checking formatting...\n[warn] src/app.ts", "prettier --check .", "prettier"],
+      ["• Packages in scope: web\nTasks: 1 successful", "turbo build", "turbo"],
+      ["NX   Running target build for 2 projects", "nx build web", "nx"],
+      ["Running 3 tests using 1 worker", "playwright test", "playwright"],
+      ["src/app.py:1:1: F401 unused import", "ruff check .", "ruff"],
+      ["src/app.py:12: error: incompatible type", "mypy src", "mypy"],
+      ["Collecting requests\nSuccessfully installed requests", "pip install requests", "pip"],
+      ["Resolved 42 packages\nInstalled 3 packages", "uv sync", "uv-sync"],
+      ["Installing dependencies from lock file", "poetry install", "poetry-install"],
+      ["pkg/main.go:22:1: issue\n2 issues:", "golangci-lint run", "golangci-lint"],
+      ["Bundle complete! 12 Gemfile dependencies", "bundle install", "bundle-install"],
+      ["Inspecting 2 files\napp.rb:1:1: C: Style/FrozenStringLiteralComment", "rubocop", "rubocop"],
+      ["An error occurred (AccessDenied) when calling", "aws s3 ls", "aws"],
+      ["ERROR: (gcloud.run.deploy) PERMISSION_DENIED", "gcloud run deploy", "gcloud"],
+      ["Permission denied (publickey).", "ssh host", "ssh"],
+      ["sending incremental file list\nrsync error: code 23", "rsync -av src host:", "rsync"],
+      ["HTTP/1.1 500 Internal Server Error", "curl -i example.test", "curl"],
+      ["ERROR 404: Not Found.", "wget example.test/missing", "wget"],
+      ["USER       PID %CPU COMMAND", "ps aux", "shell-ps"],
+      ["Filesystem      Size  Used Avail Use% Mounted on", "df -h", "shell-df"],
+      ["120M node_modules", "du -sh *", "shell-du"],
+    ];
+
+    for (const [text, command, expected] of cases) {
+      const detection = detectCommandType(text, command);
+      assert.equal(detection.type, expected);
+      assert.ok(detection.matchedPatterns.length > 0);
+      assert.ok(detection.confidence >= 0.25);
+    }
+  });
+
+  it("detects git-status when command is a composite like 'cd /x && git status'", () => {
+    assert.equal(
+      detectCommandType(fixture("git-status-sample.txt"), "cd /x && git status").type,
+      "git-status"
+    );
+    assert.equal(
+      detectCommandType(fixture("git-diff-sample.txt"), "cd /repo && git diff").type,
+      "git-diff"
+    );
+  });
+
+  it("returns unknown for generic text and exposes planned alias", () => {
+    const detection = detectCommandOutput("ordinary prose without command output");
+
+    assert.equal(detection.type, "unknown");
+    assert.ok(detection.confidence > 0);
+    assert.deepEqual(detection.matchedPatterns, []);
+  });
+});