mikecarper
f0199b3111
Use a bounded uzlib-derived block encoder with the existing strict tinf decoder, qualify infrastructure roles, budget temporary RAM, and cache running-image metadata. Add self-serve CLI and policy, USB host-loss sleep grace, hardware test harnesses, regression tests, and CI coverage.
95 lines
3.7 KiB
Python
95 lines
3.7 KiB
Python
#!/usr/bin/env python3
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"""Execute the pure native USB host-loss sleep policy without Arduino/USB."""
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from pathlib import Path
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import os
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import shutil
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import subprocess
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import tempfile
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import unittest
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ROOT = Path(__file__).resolve().parents[1]
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HARNESS = r'''
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#include <helpers/UsbHostSleepPolicy.h>
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#include <iostream>
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#include <stdexcept>
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static void require(bool condition, const char* why) {
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if (!condition) throw std::runtime_error(why);
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}
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int main() {
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try {
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constexpr uint32_t grace = 120000U;
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for (uint32_t now : {0U, 1U, 120001U, UINT32_MAX}) {
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mesh::UsbHostSleepPolicy cold;
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cold.observe(false, now);
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require(!cold.shouldKeepAwake(now, grace), "never-seen host armed grace");
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}
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for (uint32_t start : {0U, 100U, UINT32_MAX - 60000U}) {
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mesh::UsbHostSleepPolicy policy;
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policy.observe(true, start);
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require(policy.shouldKeepAwake(start + grace + 1U, grace),
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"present host was allowed to sleep");
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policy.observe(false, start + 6U);
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require(policy.shouldKeepAwake(start + 6U, grace), "five-ms SOF loss lost grace");
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// Negative observations are not permission to renew the loss deadline.
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policy.observe(false, start + grace - 1U);
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require(policy.shouldKeepAwake(start + grace - 1U, grace), "grace ended early");
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policy.observe(false, start + grace);
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require(!policy.shouldKeepAwake(start + grace, grace), "grace never expired");
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policy.observe(false, start + 1U);
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require(!policy.shouldKeepAwake(start + 1U, grace), "old host revived after wrap");
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// A new actual host cancels absence and arms a fresh bounded deadline.
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const uint32_t returned_at = start + grace + 10U;
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policy.observe(true, returned_at);
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require(policy.shouldKeepAwake(returned_at, grace), "reconnect remained asleep");
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policy.observe(true, returned_at + 500U);
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policy.observe(false, returned_at + 506U);
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require(policy.shouldKeepAwake(returned_at + 500U + grace - 1U, grace),
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"last positive observation did not refresh grace");
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require(!policy.shouldKeepAwake(returned_at + 500U + grace, grace),
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"renewed grace was unbounded");
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}
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mesh::UsbHostSleepPolicy configurable;
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configurable.observe(true, 200U);
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configurable.observe(false, 201U);
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require(configurable.shouldKeepAwake(1199U, 1000U), "custom grace ended early");
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require(!configurable.shouldKeepAwake(1200U, 1000U), "custom grace never expired");
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configurable.observe(true, 3000U);
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require(configurable.shouldKeepAwake(3000U, 0U), "zero grace hid a live host");
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configurable.observe(false, 3000U);
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require(!configurable.shouldKeepAwake(3000U, 0U), "zero grace did not disable hold");
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} catch (const std::exception& e) {
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std::cerr << e.what() << '\n';
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return 1;
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}
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}
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'''
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class UsbHostSleepPolicyTest(unittest.TestCase):
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def test_host_loss_reconnect_expiry_and_clock_rollover(self):
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compiler = os.environ.get("CXX", "c++")
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self.assertIsNotNone(shutil.which(compiler), "a C++17 compiler is required")
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with tempfile.TemporaryDirectory(prefix="meshcore-usb-host-policy-") as temp:
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cpp = Path(temp) / "policy.cpp"
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binary = Path(temp) / "policy"
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cpp.write_text(HARNESS)
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compiled = subprocess.run([
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compiler, "-std=c++17", "-Wall", "-Wextra", "-Werror",
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"-I", str(ROOT / "src"), str(cpp), "-o", str(binary),
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], capture_output=True, text=True)
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self.assertEqual(compiled.returncode, 0, compiled.stderr)
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result = subprocess.run([str(binary)], capture_output=True, text=True)
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self.assertEqual(result.returncode, 0, result.stderr)
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if __name__ == "__main__":
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unittest.main()
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