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test(debugger): cover breakpoint error paths#8996

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watson/improve-code-cov
Jul 2, 2026
Merged

test(debugger): cover breakpoint error paths#8996
BridgeAR merged 1 commit into
masterfrom
watson/improve-code-cov

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@watson

@watson watson commented Jun 19, 2026

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What does this PR do?

Adds focused unit coverage for existing debugger breakpoint behavior in breakpoints.spec.js.

The new tests cover source map location translation, source map lookup failures, wrapped inspector errors when setting/removing breakpoints, and async re-evaluation error logging.

Motivation

These paths were not directly covered by the sampling refactor PR, but they are important debugger breakpoint error-handling behavior and are worth testing separately.

watson commented Jun 19, 2026

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@codecov

codecov Bot commented Jun 19, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.68%. Comparing base (0e0b182) to head (b471b4b).
⚠️ Report is 36 commits behind head on master.

Additional details and impacted files
@@           Coverage Diff           @@
##           master    #8996   +/-   ##
=======================================
  Coverage   93.67%   93.68%           
=======================================
  Files         889      889           
  Lines       50853    50853           
  Branches    10017    10017           
=======================================
+ Hits        47639    47640    +1     
+ Misses       3214     3213    -1     
Flag Coverage Δ
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test-optimization-cypress-oldest-12.0.0-commonJS 49.10% <ø> (+0.24%) ⬆️
test-optimization-cypress-oldest-12.0.0-esm 49.24% <ø> (+1.32%) ⬆️
test-optimization-cypress-oldest-14.5.4-commonJS 49.09% <ø> (+0.07%) ⬆️
test-optimization-cypress-oldest-14.5.4-esm 49.06% <ø> (+0.07%) ⬆️
test-optimization-jest-latest-latest 55.21% <ø> (+0.07%) ⬆️
test-optimization-jest-latest-oldest 54.15% <ø> (+0.14%) ⬆️
test-optimization-jest-oldest-latest 55.25% <ø> (+0.07%) ⬆️
test-optimization-jest-oldest-oldest 51.93% <ø> (+0.10%) ⬆️
test-optimization-mocha-latest-latest 53.48% <ø> (+0.08%) ⬆️
test-optimization-mocha-latest-oldest 51.07% <ø> (+0.08%) ⬆️
test-optimization-mocha-oldest-latest 53.58% <ø> (+0.08%) ⬆️
test-optimization-mocha-oldest-oldest 51.06% <ø> (+0.06%) ⬆️
test-optimization-playwright-latest-latest-playwright-active-test-span 44.19% <ø> (+0.26%) ⬆️
test-optimization-playwright-latest-latest-playwright-atr 43.00% <ø> (+0.10%) ⬆️
test-optimization-playwright-latest-latest-playwright-efd 43.41% <ø> (+0.08%) ⬆️
test-optimization-playwright-latest-latest-playwright-final-status 43.48% <ø> (?)
test-optimization-playwright-latest-latest-playwright-impacted-tests ?
test-optimization-playwright-latest-latest-playwright-reporting 43.04% <ø> (+0.08%) ⬆️
test-optimization-playwright-latest-latest-playwright-test-management 44.48% <ø> (+0.09%) ⬆️
test-optimization-playwright-latest-oldest-playwright-active-test-span 44.15% <ø> (+0.26%) ⬆️
test-optimization-playwright-latest-oldest-playwright-atr 43.06% <ø> (+0.10%) ⬆️
test-optimization-playwright-latest-oldest-playwright-efd 43.35% <ø> (?)
test-optimization-playwright-latest-oldest-playwright-final-status 43.39% <ø> (+0.10%) ⬆️
test-optimization-playwright-latest-oldest-playwright-impacted-tests 42.88% <ø> (ø)
test-optimization-playwright-latest-oldest-playwright-reporting 42.84% <ø> (+0.08%) ⬆️
test-optimization-playwright-latest-oldest-playwright-test-management 44.43% <ø> (+0.10%) ⬆️
test-optimization-playwright-oldest-latest-playwright-active-test-span 44.40% <ø> (+0.08%) ⬆️
test-optimization-playwright-oldest-latest-playwright-atr 43.08% <ø> (+0.08%) ⬆️
test-optimization-playwright-oldest-latest-playwright-efd 43.47% <ø> (+0.08%) ⬆️
test-optimization-playwright-oldest-latest-playwright-final-status 43.56% <ø> (?)
test-optimization-playwright-oldest-latest-playwright-impacted-tests 43.03% <ø> (ø)
test-optimization-playwright-oldest-latest-playwright-reporting 43.09% <ø> (+0.08%) ⬆️
test-optimization-playwright-oldest-latest-playwright-test-management 44.56% <ø> (+0.11%) ⬆️
test-optimization-playwright-oldest-oldest-playwright-active-test-span 44.23% <ø> (+0.26%) ⬆️
test-optimization-playwright-oldest-oldest-playwright-atr 43.14% <ø> (+0.10%) ⬆️
test-optimization-playwright-oldest-oldest-playwright-efd 43.41% <ø> (+0.08%) ⬆️
test-optimization-playwright-oldest-oldest-playwright-final-status 43.50% <ø> (+0.10%) ⬆️
test-optimization-playwright-oldest-oldest-playwright-impacted-tests 42.96% <ø> (ø)
test-optimization-playwright-oldest-oldest-playwright-reporting 42.90% <ø> (+0.08%) ⬆️
test-optimization-playwright-oldest-oldest-playwright-test-management 44.49% <ø> (+0.10%) ⬆️
test-optimization-selenium-latest 45.45% <ø> (+0.06%) ⬆️
test-optimization-selenium-oldest 45.05% <ø> (+0.07%) ⬆️
test-optimization-testopt-active 48.16% <ø> (+0.12%) ⬆️
test-optimization-testopt-latest 48.16% <ø> (+0.12%) ⬆️
test-optimization-testopt-maintenance 48.04% <ø> (+0.13%) ⬆️
test-optimization-testopt-oldest 49.34% <ø> (+0.09%) ⬆️
test-optimization-vitest-latest 50.83% <ø> (+0.07%) ⬆️
test-optimization-vitest-oldest 48.11% <ø> (+0.31%) ⬆️

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@dd-octo-sts

dd-octo-sts Bot commented Jun 19, 2026

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Contributor

Overall package size

Self size: 6.36 MB
Deduped: 7.43 MB
No deduping: 7.43 MB

Dependency sizes | name | version | self size | total size | |------|---------|-----------|------------| | import-in-the-middle | 3.2.0 | 104.26 kB | 843.44 kB | | opentracing | 0.14.7 | 194.81 kB | 194.81 kB | | dc-polyfill | 0.1.11 | 25.74 kB | 25.74 kB |

🤖 This report was automatically generated by heaviest-objects-in-the-universe

@pr-commenter

pr-commenter Bot commented Jun 19, 2026

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Benchmarks

Benchmark execution time: 2026-06-26 17:19:12

Comparing candidate commit b471b4b in PR branch watson/improve-code-cov with baseline commit 0e0b182 in branch master.

📊 Benchmarking dashboard

Found 0 performance improvements and 0 performance regressions! Performance is the same for 2245 metrics, 41 unstable metrics.

Explanation

This is an A/B test comparing a candidate commit's performance against that of a baseline commit. Performance changes are noted in the tables below as:

  • 🟩 = significantly better candidate vs. baseline
  • 🟥 = significantly worse candidate vs. baseline

We compute a confidence interval (CI) over the relative difference of means between metrics from the candidate and baseline commits, considering the baseline as the reference.

If the CI is entirely outside the configured SIGNIFICANT_IMPACT_THRESHOLD (or the deprecated UNCONFIDENCE_THRESHOLD), the change is considered significant.

Feel free to reach out to #apm-benchmarking-platform on Slack if you have any questions.

More details about the CI and significant changes

You can imagine this CI as a range of values that is likely to contain the true difference of means between the candidate and baseline commits.

CIs of the difference of means are often centered around 0%, because often changes are not that big:

---------------------------------(------|---^--------)-------------------------------->
                              -0.6%    0%  0.3%     +1.2%
                                 |          |        |
         lower bound of the CI --'          |        |
sample mean (center of the CI) -------------'        |
         upper bound of the CI ----------------------'

As described above, a change is considered significant if the CI is entirely outside the configured SIGNIFICANT_IMPACT_THRESHOLD (or the deprecated UNCONFIDENCE_THRESHOLD).

For instance, for an execution time metric, this confidence interval indicates a significantly worse performance:

----------------------------------------|---------|---(---------^---------)---------->
                                       0%        1%  1.3%      2.2%      3.1%
                                                  |   |         |         |
       significant impact threshold --------------'   |         |         |
                      lower bound of CI --------------'         |         |
       sample mean (center of the CI) --------------------------'         |
                      upper bound of CI ----------------------------------'

Unstable benchmarks

These benchmarks have a confidence interval too wide to call a change; treat them as noise rather than signal.

scenario:appsec-appsec-enabled-20

  • unstable execution_time [-192.458ms; +188.832ms] or [-5.139%; +5.042%]

scenario:appsec-appsec-enabled-24

  • unstable execution_time [-181.424ms; +188.726ms] or [-6.855%; +7.131%]

scenario:appsec-appsec-enabled-26

  • unstable execution_time [-206935.910µs; +205633.210µs] or [-8.211%; +8.159%]

scenario:appsec-appsec-enabled-with-attacks-26

  • unstable execution_time [-155362.409µs; +156916.809µs] or [-5.407%; +5.462%]

scenario:appsec-control-20

  • unstable execution_time [-152.030ms; +175.845ms] or [-8.668%; +10.026%]

scenario:appsec-control-24

  • unstable execution_time [-103504.455µs; +104674.888µs] or [-8.532%; +8.629%]

scenario:appsec-control-26

  • unstable execution_time [-112627.573µs; +111447.273µs] or [-9.316%; +9.218%]

scenario:debugger-line-probe-with-snapshot-default-24

  • unstable cpu_user_time [-2.545s; +0.334s] or [-29.983%; +3.931%]
  • unstable execution_time [-2.583s; +0.333s] or [-28.157%; +3.625%]
  • unstable instructions [-21.9G instructions; +2.9G instructions] or [-31.749%; +4.241%]
  • unstable throughput [-96.852op/s; +764.273op/s] or [-2.643%; +20.858%]

scenario:debugger-line-probe-with-snapshot-default-26

  • unstable cpu_user_time [-2.106s; +4.633s] or [-21.123%; +46.469%]
  • unstable execution_time [-2.117s; +4.649s] or [-19.839%; +43.564%]
  • unstable instructions [-18.7G instructions; +41.3G instructions] or [-22.416%; +49.595%]
  • unstable max_rss_usage [-6.904MB; +14.002MB] or [-4.294%; +8.708%]
  • unstable throughput [-1015.648op/s; +455.178op/s] or [-32.412%; +14.526%]

scenario:debugger-line-probe-with-snapshot-minimal-24

  • unstable cpu_user_time [-1.915s; +4.117s] or [-22.594%; +48.589%]
  • unstable execution_time [-1.928s; +4.161s] or [-21.083%; +45.505%]
  • unstable instructions [-16.2G instructions; +35.0G instructions] or [-23.513%; +50.760%]
  • unstable max_rss_usage [-7.573MB; +14.939MB] or [-4.721%; +9.312%]
  • unstable throughput [-1232.980op/s; +570.316op/s] or [-33.530%; +15.509%]

scenario:debugger-line-probe-without-snapshot-24

  • unstable cpu_user_time [-1.963s; +4.218s] or [-23.125%; +49.701%]
  • unstable execution_time [-1.992s; +4.260s] or [-21.705%; +46.425%]
  • unstable instructions [-16.6G instructions; +36.1G instructions] or [-24.048%; +52.117%]
  • unstable max_rss_usage [-7.909MB; +16.107MB] or [-4.935%; +10.050%]
  • unstable throughput [-1245.269op/s; +584.485op/s] or [-33.925%; +15.923%]

scenario:debugger-line-probe-without-snapshot-26

  • unstable cpu_user_time [-2936.919ms; +2924.982ms] or [-29.327%; +29.208%]
  • unstable execution_time [-2921.890ms; +2917.024ms] or [-27.266%; +27.221%]
  • unstable instructions [-25866.2M instructions; +25807.1M instructions] or [-30.940%; +30.869%]
  • unstable max_rss_usage [-9793.218KB; +9566.818KB] or [-6.100%; +5.959%]
  • unstable throughput [-626.578op/s; +638.361op/s] or [-20.126%; +20.505%]

scenario:dogstatsd-with-tags-20

  • unstable cpu_user_time [-421.657ms; +338.570ms] or [-8.555%; +6.869%]
  • unstable execution_time [-422.186ms; +338.545ms] or [-8.436%; +6.765%]
  • unstable throughput [-116526.594op/s; +144998.454op/s] or [-6.933%; +8.627%]

scenario:plugin-aws-sdk-lambda-inject-with-context-24

  • unstable cpu_user_time [-177.661ms; +214.058ms] or [-4.599%; +5.542%]
  • unstable execution_time [-175.186ms; +213.723ms] or [-4.507%; +5.498%]

scenario:plugin-graphql-long-with-depth-and-collapse-off-24

  • unstable cpu_user_time [-346.233ms; +267.407ms] or [-7.490%; +5.785%]
  • unstable execution_time [-371.764ms; +284.447ms] or [-7.554%; +5.779%]
  • unstable max_rss_usage [-49.337MB; +33.225MB] or [-8.848%; +5.958%]
  • unstable throughput [-2.680op/s; +3.591op/s] or [-6.175%; +8.273%]

scenario:plugin-graphql-long-with-depth-off-20

  • unstable max_rss_usage [-10615.332KB; +12227.904KB] or [-7.124%; +8.206%]

@watson
watson force-pushed the watson/improve-code-cov branch from a8de7ad to 09a70be Compare June 25, 2026 09:30
@watson
watson force-pushed the watson/DEBUG-5778/refactor-sampling branch from 75ba72e to 3f928f1 Compare June 25, 2026 09:30
@datadog-official

datadog-official Bot commented Jun 25, 2026

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Tests

🎉 All green!

🧪 All tests passed
❄️ No new flaky tests detected

This comment will be updated automatically if new data arrives.
🔗 Commit SHA: b471b4b | Docs | Datadog PR Page | Give us feedback!

@watson
watson force-pushed the watson/improve-code-cov branch from 09a70be to 5a6de48 Compare June 26, 2026 16:34
@watson
watson force-pushed the watson/DEBUG-5778/refactor-sampling branch from 3f928f1 to d869c02 Compare June 26, 2026 16:34
Base automatically changed from watson/DEBUG-5778/refactor-sampling to master June 26, 2026 17:03
@github-actions github-actions Bot added semver-patch debugger Dynamic Instrumentation & Live Debugger labels Jun 26, 2026
Add focused unit coverage for existing debugger breakpoint behavior that was
previously untested. The new cases cover source map location translation
failures, inspector breakpoint operation failures, and async re-evaluation
error logging.
@watson
watson force-pushed the watson/improve-code-cov branch from 5a6de48 to b471b4b Compare June 26, 2026 17:10
@watson
watson marked this pull request as ready for review June 26, 2026 17:11
@watson
watson requested a review from a team as a code owner June 26, 2026 17:11
@watson
watson requested a review from a team June 26, 2026 17:12
@BridgeAR
BridgeAR merged commit 0177b97 into master Jul 2, 2026
1076 of 1077 checks passed
@BridgeAR
BridgeAR deleted the watson/improve-code-cov branch July 2, 2026 00:14
dd-octo-sts Bot pushed a commit that referenced this pull request Jul 2, 2026
Add focused unit coverage for existing debugger breakpoint behavior that was
previously untested. The new cases cover source map location translation
failures, inspector breakpoint operation failures, and async re-evaluation
error logging.
This was referenced Jul 2, 2026
rochdev pushed a commit that referenced this pull request Jul 2, 2026
Add focused unit coverage for existing debugger breakpoint behavior that was
previously untested. The new cases cover source map location translation
failures, inspector breakpoint operation failures, and async re-evaluation
error logging.
rochdev pushed a commit that referenced this pull request Jul 2, 2026
Add focused unit coverage for existing debugger breakpoint behavior that was
previously untested. The new cases cover source map location translation
failures, inspector breakpoint operation failures, and async re-evaluation
error logging.
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2 participants