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Evgeny Mandrikov

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titleconferencedate
The state of code coverage for Kotlindroidcon Berlin 20242024-07-03
Compares actual tools and failures: JaCoCo and JetBrains Coverage generally work but mis-map compiler-generated bytecode (try-with-resources, Kotlin inline…
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Code coverage MythBustersJNation 20242024-06-04
Claims: JaCoCo and IDE/JetBrains engines report different coverage numbers; zero coverage revealed tests didn't run (JUnit 4 vs 5/Vintage). Tools can be…
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The state of code coverage for KotlinAndroidMakers by droidcon 20242024-04-25
Team coverage target drops from 95% to 85% after switching to Kotlin; concrete reasons appear: bytecode-generated null checks, string-switch hash checks…
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Java, Code Coverage & Their Best Friend: BytecodeYOW! Perth 20232023-09-11
JaCoCo inspects class files and implements bytecode pattern filters so coverage matches what was written in source, not the compiler noise: it ignores…
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Java 4..21, Kotlin, Code Coverage, bytecode: scandals, intrigues, investigationsVoxxed Days Luxembourg 20232023-06-21
Bytecode inspection of Java (8, 11, 17, 21) and Kotlin shows concrete surprises: JaCoCo filters synthetic methods and special lambda names to avoid false…
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Kotlin, Java 4..18, Code Coverage and their best friend — bytecode: ...Devoxx France 20222022-04-20
Shows analysis of classfiles produced by javac 18 and kotlinc 1.6 using javap and JaCoCo to find real differences: nestmates remove synthetic bridge…
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Silence of Code Coverage – Time to Test the TestsSelenium Camp 20202020-02-21
This talk introduces mutation testing as a way to evaluate and improve unit tests when code coverage metrics look good but bugs remain. It explains how…
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Bytecode Pattern MatchingEclipseCon Europe 20182018-10-23
Hands-on exploration of how javac, ECJ and kotlinc transform simple source into surprising bytecode, with JaCoCo/EclEmma used to measure and then filter out…
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Java Code Coverage MechanicsEclipseCon Europe 20172017-10-24
Deep dive into JaCoCo internals: instrumentation via a JVM agent that inserts boolean probe arrays (4–7 bytes per probe) into class files, validated across…
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The Art of ParsingDevoxx US 20172017-03-21
SonarSource explains why compiler teams handwrite parsers: generator-friendly grammars are hard to maintain, give poor error recovery, and won’t match the…
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