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This is story about thing you wanted to do but didn't yet. We will start with comparison of Groovy and Java code, will see how to test with Groovy and finally will try to sell it to manager
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I
Introducing Groovy into Java project
Yuriy Chulovskyy, Luxoft
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Yuriy Chulovskyy, 10 years in IT
[email protected] http://www.linkedin.com/in/yuriychulovskyy https://github.com/ychulovskyy
Who am I?
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My goals
We can do better!!!
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Why Groovy?
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Syntax sugar. POJO
61 lines of code
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Syntax sugar. POJO
Semicolons
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Return statement
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public keyword
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Verbose setters/getters
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37 lines of code
Default implementation for the methods
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10 lines of code
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Object construction
Object name mentioned in each line
verbose statement
parentheses
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Truth
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Elvis and null-safe navigation
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Collections. List
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Collections. List
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Collections. List
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Collections. HashMap
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Patterns. Singleton
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Patterns. Immutable
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Patterns. Builder
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Vice versa
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Testing in Groovy.Power asserts
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Testing in Groovy.Power asserts
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Testing in Groovy.Spock
Defines a Specification with features:setup: or given:expect:when:then:where:
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Testing in Groovy.Spock
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Testing in Groovy.Spock
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Testing in Groovy.Spock
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Stream API
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Summary.Syntactic Sugar
● Optional: semicolons, parentheses, return keyword, public keyword, typing
● GString● Truth, Elvis, null-safe navigation● Constructor with map as parameter, “with” closure● Collections API● Power asserts
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Summary.AST transformation
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Summary.Java 8 vs Groovy
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Summary.Infrastructure
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Links
http://www.groovy-lang.org/
https://speakerdeck.com/glaforge/what-makes-groovy-groovy-jax-london-2013
http://glaforge.appspot.com/article/back-from-javaone
http://www.slideshare.net/aalmiray/gr8conf-groovy-ecosystem
https://github.com/ychulovskyy/TestSpockReportGenerator
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Thanks!
