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Merge pull request #20 from praqma-training/build-phases
elaborates on the build-phases kata
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# Build phases | ||
# Gradle Kata: Build phases | ||
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## Configuration vs execution time | ||
This kata explores the three stages of a gradle build: | ||
- Initialization | ||
- Configuration | ||
- Execution | ||
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The `build.gradle` script in this exercise contains a property and two tasks: | ||
## Setup | ||
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- `setTheValue` changes the value of `theValue` | ||
- `printTheValue` prints the value of `theValue` | ||
Run `source setup.sh` | ||
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Predict the outcome of the following commands: | ||
This will create a new gradle project in the `exercise` directory and add several tasks to `build.gradle` | ||
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- `./gradlew printTheValue` | ||
- `./gradlew setTheValue printTheValue` | ||
## The task | ||
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Run the commands and note the printed values. | ||
- Examine the `build.gradle` script. It contains a property and two tasks: | ||
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- Q: Did the output match your expectations? If not, what tripped you up? | ||
- `setTheValue` changes the value of `theValue` | ||
- `printTheValue` prints the value of `theValue` | ||
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- Predict the outcome of the following commands: | ||
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- `./gradlew printTheValue` | ||
- `./gradlew setTheValue printTheValue` | ||
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Make a small change to the `build.gradle` such that: | ||
- Run the commands and note the printed values. | ||
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- Q: Did the output match your expectations? If not, what tripped you up? | ||
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- the `printTheValue`-task ends up printing `The value currently is: 200`, | ||
- when run after the `printTheValue` task and | ||
- while still using the `theValue` variable | ||
- Change `printTheValue` so that the `message` is defined inside the doLast block | ||
``` | ||
task 'printTheValue' { | ||
group 'Value' | ||
description 'Prints the value' | ||
doLast { | ||
def message = "The value currently is: ${theValue}" | ||
println message | ||
} | ||
} | ||
``` | ||
- Run `./gradlew setTheValue printTheValue` again | ||
- Why is the increased `theValue` printed this time, when it wasn't before? |