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TESTER’S ANXIETIES

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my name is Alex

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my name is Alex

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my name is Alex @p0deje

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my name is Alex @p0deje

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my name is Alex @p0deje

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my name is Alex @p0deje

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TESTER’S ANXIETIES

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Test automation "

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Test automation Performance testing "

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Test automation Performance testing Security testing "

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Organizing testing process #

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Organizing testing process Agile testing #

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Organizing testing process Agile testing Test management #

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Any talks about testers?

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What bothers me most as a tester?

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↖ ⬆ ↗ ⬅ ➡ ↙ ⬇ ↘

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Do agile teams need testers?

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Do agile teams need testers? Should testers fix bugs?

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So, you want to release? Tell me more about how we roll it back when we’re screwed

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Contradictions + Cautiousness = Anxiety

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Contradictions + Cautiousness = Anxiety

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Contradictions + Cautiousness = Anxiety

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TESTER’S ANXIETIES

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MY ANXIETIES

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.

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. Cultural studies English

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✍ Technical writer Software tester

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✍ Technical writer Software tester

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“All I need to do is use the application, write down problems and they also pay me for this? How awesome is that!” Brand New Tester

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logging bugs > doing testing = logging bugs < doing testing = logging bugs ≃ doing testing =

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logging bugs > doing testing = logging bugs < doing testing = logging bugs ≃ doing testing =

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logging bugs > doing testing = logging bugs < doing testing = logging bugs ≃ doing testing =

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logging bugs > doing testing = logging bugs < doing testing = logging bugs ≃ doing testing =

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logging bugs > doing testing = logging bugs < doing testing = logging bugs ≃ doing testing =

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logging bugs > doing testing = logging bugs < doing testing = logging bugs ≃ doing testing =

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6

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6 Test automation

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Test automation Performance testing 6

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Testing is easy 6

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Testing is hard 6

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Testing is hard

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I DON’T KNOW HOW TO TEST

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Boundary value analysis Equivalence partitioning Pairwise testing Decision tables

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Boundary value analysis Equivalence partitioning Pairwise testing Decision tables

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Boundary value analysis Equivalence partitioning Pairwise testing Decision tables

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Boundary value analysis Equivalence partitioning Pairwise testing Decision tables

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Boundary value analysis Equivalence partitioning Pairwise testing Decision tables

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How to test?

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How to test? 9

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How to test?

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Object-oriented programming Functional programming

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Object-oriented programming Functional programming DRY SOLID YAGNI

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Design patterns Books Object-oriented programming Functional programming DRY SOLID YAGNI

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Programming Testing Analysis Decomposition Analysis Decomposition Composition Synthesis

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Programming Testing Analysis Decomposition Analysis Decomposition Composition Synthesis

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Programming Testing Analysis Decomposition Analysis Decomposition Composition Synthesis

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A tester is ;<

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A tester is ;<

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A tester is ;=

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How to test?

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How to test? 9

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How to test?

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Keep looking for the answer

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Automated testing vs Manual testing

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Automated testing vs Manual testing

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Automated testing vs Manual testing

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DO I AUTOMATE ENOUGH?

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Database Front-end Server Search engines Analytics Assets 3rd party integrations

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Unit tests

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Unit tests Integration tests

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Unit tests System tests Integration tests

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Unit tests System tests Exploratory testing Integration tests

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Unit tests UI tests Exploratory testing Integration tests

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Unit tests Integration tests UI tests Exploratory testing API tests

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Unit tests Integration tests UI tests Exploratory testing API tests

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Unit tests Integration tests UI tests Exploratory testing API tests

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PRODUCTION

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PRODUCTION Unit tests System tests Integration tests

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PRODUCTION

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PRODUCTION I am a server config syntax error!

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PRODUCTION Unit tests System tests Integration tests

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PRODUCTION System tests Integration tests

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PRODUCTION

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PRODUCTION I am an invalid input error!

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PRODUCTION Unit tests System tests Integration tests

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PRODUCTION Unit tests Integration tests

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PRODUCTION

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PRODUCTION I am a broken contract between API and front-end!

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DO I AUTOMATE ENOUGH?

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Can I write a good test on this level? Unit tests System tests Exploratory testing Integration tests

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Can I write a good test on this level? Unit tests System tests Exploratory testing Integration tests

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Can I write a good test on this level? Unit tests System tests Exploratory testing Integration tests

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Can I write a good test on this level? Unit tests System tests Exploratory testing Integration tests

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Do I automate too much?

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Tests are dumb

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I DON’T TRUST MY TESTS

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Arrange Act Assert

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Arrange Act Assert

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Arrange Act Assert

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Arrange Act Assert

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Arrange Act Assert

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6 Uses available data Shares data between tests Uses data that is told to use Should not share data between tests

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6 Uses available data Shares data between tests Uses data that is told to use Should not share data between tests

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6 Uses available data Shares data between tests Uses data that is told to use Should not share data between tests

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6 Uses available data Shares data between tests Uses data that is told to use Should not share data between tests

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6 Uses available data Shares data between tests Uses data that is told to use Should not share data between tests

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Online shop

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Online shop Add item to cart Update item in cart Remove item from cart Checkout

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Online shop Add item to cart Update item in cart Remove item from cart Checkout 6

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Online shop Add item to cart Update item in cart Remove item from cart Checkout 6

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Online shop Add item to cart Update item in cart Remove item from cart Checkout 6

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Online shop Add item to cart Update item in cart Remove item from cart Checkout 6

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Online shop Add item to cart Update item in cart Remove item from cart Checkout 6

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Online shop Add item to cart Update item in cart Remove item from cart Checkout 6

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Online shop Add item to cart Update item in cart Remove item from cart Checkout 6

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Online shop Add item to cart Update item in cart Remove item from cart Checkout 6

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Online shop Add item to cart Update item in cart Remove item from cart Checkout 6

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Online shop Add item to cart Update item in cart Remove item from cart Checkout 6

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6 Less deterministic More deterministic

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How can we make tests less deterministic?

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Model-based testing

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Usual test Model-based test Determine the exact steps Describe the possible states and steps between them

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Usual test Model-based test Determine the exact steps Describe the possible states and steps between them

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no items in cart

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no items in cart item in cart

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no items in cart item in cart Add item to cart

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no items in cart item in cart Add item to cart

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no items in cart item in cart Add item to cart Remove item from cart Update item in cart

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Less deterministic Improved test coverage Same execution time

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Less deterministic Improved test coverage Same execution time

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Less deterministic Improved test coverage Same execution time

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Arrange Act Assert

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Arrange Act Assert

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Arrange Act Assert

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Test oracle ☝

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6

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Combinatorial problems

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Period of being a customer Country # of purchases Average time on site

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Period of being a customer Country # of purchases Average time on site 42%

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Randomized input Neural network System under test Compare

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Unit tests System tests Exploratory testing Integration tests

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Unit tests System tests Exploratory testing Integration tests

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I DON’T KNOW HOW TO TEST

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KEEP LEARNING “THIS IS FINE”

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I DON’T KNOW IF I AUTOMATE ENOUGH

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USE TEST PYRAMID

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I DON’T TRUST MY TESTS

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DON’T WRITE MORE TESTS, MAKE TESTS SMARTER

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WHAT ARE YOUR ANXIETIES?

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WHAT ARE YOUR ANXIETIES? @p0deje [email protected]

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WHAT ARE YOUR ANXIETIES? @p0deje [email protected]

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my name is Alex @p0deje [email protected]