├── .gitignore ├── .travis.yml ├── CONTRIBUTING.md ├── LICENSE.txt ├── README.md ├── art └── maxibon.jpg ├── build.gradle ├── config └── checkstyle │ └── checkstyle.xml ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── settings.gradle └── src ├── main └── java │ └── com │ └── karumi │ └── maxibonkata │ ├── Chat.java │ ├── ConsoleChat.java │ ├── Developer.java │ ├── KarumiHQs.java │ └── Karumies.java └── test └── java └── com └── karumi └── maxibonkata ├── DeveloperProperties.java ├── DevelopersGenerator.java ├── HungryDevelopersGenerator.java ├── KarumiHQsProperties.java ├── KarumiesGenerator.java └── NotSoHungryDevelopersGenerator.java /.gitignore: -------------------------------------------------------------------------------- 1 | # Java class files 2 | *.class 3 | 4 | # Generated files 5 | bin/ 6 | gen/ 7 | 8 | # Gradle files 9 | .gradle/ 10 | build/ 11 | local.properties 12 | 13 | # IntelliJ files 14 | .idea 15 | *.iml 16 | 17 | # Maven output folder 18 | target 19 | 20 | # Misc 21 | .DS_Store 22 | Thumbs.db 23 | *.swp 24 | *.bak -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | language: java 2 | jdk: 3 | - oraclejdk8 4 | 5 | script: 6 | ./gradlew checkstyle build 7 | -------------------------------------------------------------------------------- /CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | Contributing 2 | ============ 3 | 4 | :+1::tada: First off, thanks for taking the time to contribute! :tada::+1: 5 | 6 | If you would like to contribute code to this repository you can do so through GitHub by 7 | forking the repository and sending a pull request or opening an issue. 8 | 9 | When submitting code, please make every effort to follow existing conventions 10 | and style in order to keep the code as readable as possible. Please also make 11 | sure your code compiles, passes the tests and the checkstyle configured for this repository. 12 | 13 | 14 | Some tips that will help you to contribute to this repository: 15 | 16 | * Write clean code and test it. 17 | * Follow the repository code style. 18 | * Write good commit messages. 19 | * Do not send pull requests without checking if the project build is OK in Travis-CI. 20 | * Review if your changes affects the repository documentation and update it. 21 | * Describe the PR content and don't hesitate to add comments to explain us why you've added or changed something. 22 | 23 | Code of conduct 24 | --------------- 25 | 26 | As contributors and maintainers of this project, we pledge to respect all people who contribute through reporting issues, posting feature requests, updating documentation, submitting pull requests or patches, and other activities. 27 | 28 | We are committed to making participation in this project a harassment-free experience for everyone, regardless of level of experience, gender, gender identity and expression, sexual orientation, disability, personal appearance, body size, race, ethnicity, age, or religion. 29 | 30 | Examples of unacceptable behavior by participants include the use of sexual language or imagery, derogatory comments or personal attacks, trolling, public or private harassment, insults, or other unprofessional conduct. 31 | 32 | Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct. 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We also recommend that a 186 | file or class name and description of purpose be included on the 187 | same "printed page" as the copyright notice for easier 188 | identification within third-party archives. 189 | 190 | Copyright [yyyy] [name of copyright owner] 191 | 192 | Licensed under the Apache License, Version 2.0 (the "License"); 193 | you may not use this file except in compliance with the License. 194 | You may obtain a copy of the License at 195 | 196 | http://www.apache.org/licenses/LICENSE-2.0 197 | 198 | Unless required by applicable law or agreed to in writing, software 199 | distributed under the License is distributed on an "AS IS" BASIS, 200 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 201 | See the License for the specific language governing permissions and 202 | limitations under the License. -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ![Karumi logo][karumilogo] Kata Maxibon for Java. [![Build Status](https://travis-ci.org/Karumi/MaxibonKataJava.svg?branch=master)](https://travis-ci.org/Karumi/MaxibonKataJava) 2 | ================================================== 3 | 4 | - We are here to practice [property based testing][property-based-testing]. 5 | - We are going to use [JUnit-QuickCheck][junit-quickcheck] to write our tests. 6 | - We are going to practice pair programming. 7 | 8 | During this kata we will try to find how to use property based testing from different points of view: 9 | 10 | * Using property based testing and [TDD][tdd] at the same time. 11 | * Using property based testing to cover legacy code. 12 | * Using the already tested code to check if the tests are working fine (manual mutation testing). 13 | 14 | If you want to learn just property based testing using an already implemented application go to the branch ``write-tests``. If you prefer to practice TDD in the ``master`` branch you will find the kata already resolved. If you prefer to practice mutation testing stay in the ``master`` branch. 15 | 16 | ## Getting started 17 | 18 | Karumi developers love ice cream. And one of our favorites ice cream is named Maxibon: 19 | 20 | ![Maxibon][maxibon] 21 | 22 | Summer is comming and our small team sometime needs Maxibons to work better. But in the Karumi HQs finding a Maxibon is not always easy. We start every week with 10 Maxibons but once there are just 2 Maxibons or less we need to buy more. 23 | 24 | Karumi developers can consume zero or a positive number of maxibons. The Karumi team is composed by five engineers and everytime some of these engineers go to the kitchen they grab some maxibons as follows: 25 | 26 | * If the developer is Pedro, he grabs three maxibons. 27 | * If the developer is Davide, he does not grab any maxibon. 28 | * If the developer is Alberto, he grabs one maxibon. 29 | * If the developer is Jorge, he grabs two maxibons. 30 | * If the developer is Sergio, he grabs one maxibon. 31 | 32 | When a Karumi engineer goes to the kitchen, they can go in group if needed, and there are just 2 maxibons or less left he has to send a message through the Slack API saying ``"Hi guys, I'm . We need more maxibons!"``. And the number of maxibons available will be automatically incremented by 10 :). If the number of maxibons left is lower than the number of maxibons the developer tries to get he will get just the number of maxibons available. 33 | 34 | ## Tasks 35 | 36 | Your task as Java Developer is to resolve this problem or test an already implemented software, depending on the path you have choosen before to start. 37 | 38 | * If you want to practice TDD write a little piece of software to implement the already described scenario following the TDD cycle. 39 | * If you don not want to follow the TDD path create an empty project, add [JUnit-QuickCheck][junit-quickcheck] as a dependency and start writing code. 40 | * If you prefer to just learn how to use [property based testing][property-based-testing] you can use this repository just checkout to the branch ``write-tests``. 41 | 42 | ## Extra tasks: 43 | 44 | * Change the initial number of maxibons to be configurable. 45 | * Add the verbose modifier to the properties to review if the generation is working fine. 46 | * Change your production code to check if your tests fail or not. 47 | * Configure the number of generations used per property. 48 | 49 | **This repository is ready to build the application, pass the checkstyle and your tests in Travis-CI environments.** 50 | 51 | #License 52 | 53 | Copyright 2016 Karumi 54 | 55 | Licensed under the Apache License, Version 2.0 (the "License"); 56 | you may not use this file except in compliance with the License. 57 | You may obtain a copy of the License at 58 | 59 | http://www.apache.org/licenses/LICENSE-2.0 60 | 61 | Unless required by applicable law or agreed to in writing, software 62 | distributed under the License is distributed on an "AS IS" BASIS, 63 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 64 | See the License for the specific language governing permissions and 65 | limitations under the License. 66 | 67 | [karumilogo]: https://cloud.githubusercontent.com/assets/858090/11626547/e5a1dc66-9ce3-11e5-908d-537e07e82090.png 68 | [property-based-testing]: http://es.slideshare.net/ScottWlaschin/an-introduction-to-property-based-testing 69 | [junit-quickcheck]: http://pholser.github.io/junit-quickcheck/site/0.6/ 70 | [maxibon]: ./art/maxibon.jpg 71 | [tdd]: https://en.wikipedia.org/wiki/Test-driven_development 72 | -------------------------------------------------------------------------------- /art/maxibon.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Karumi/MaxibonKataJava/3fafa0e231121619de3840aba4fb412cb990d91b/art/maxibon.jpg -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | group 'MaxibonsKataJava' 2 | version '1.0-SNAPSHOT' 3 | 4 | apply plugin: 'java' 5 | apply plugin: 'checkstyle' 6 | 7 | sourceCompatibility = 1.8 8 | 9 | repositories { 10 | mavenCentral() 11 | } 12 | 13 | dependencies { 14 | testCompile group: 'org.slf4j', name: 'slf4j-simple', version: '1.7.21' 15 | testCompile group: 'com.pholser', name: 'junit-quickcheck-core', version: '0.6' 16 | testCompile group: 'com.pholser', name: 'junit-quickcheck-generators', version: '0.6' 17 | testCompile group: 'org.apache.commons', name: 'commons-lang3', version: '3.4' 18 | testCompile group: 'org.mockito', name: 'mockito-all', version: '1.10.19' 19 | } 20 | 21 | task checkstyle(type: Checkstyle) { 22 | configFile file("${project.rootDir}/config/checkstyle/checkstyle.xml") 23 | source 'src' 24 | include '**/*.java' 25 | exclude '**/gen/**' 26 | 27 | classpath = files() 28 | } 29 | -------------------------------------------------------------------------------- /config/checkstyle/checkstyle.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 7 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | 121 | 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 | 132 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Karumi/MaxibonKataJava/3fafa0e231121619de3840aba4fb412cb990d91b/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Thu Jun 30 17:06:54 CEST 2016 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-2.5-all.zip 7 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 10 | DEFAULT_JVM_OPTS="" 11 | 12 | APP_NAME="Gradle" 13 | APP_BASE_NAME=`basename "$0"` 14 | 15 | # Use the maximum available, or set MAX_FD != -1 to use that value. 16 | MAX_FD="maximum" 17 | 18 | warn ( ) { 19 | echo "$*" 20 | } 21 | 22 | die ( ) { 23 | echo 24 | echo "$*" 25 | echo 26 | exit 1 27 | } 28 | 29 | # OS specific support (must be 'true' or 'false'). 30 | cygwin=false 31 | msys=false 32 | darwin=false 33 | case "`uname`" in 34 | CYGWIN* ) 35 | cygwin=true 36 | ;; 37 | Darwin* ) 38 | darwin=true 39 | ;; 40 | MINGW* ) 41 | msys=true 42 | ;; 43 | esac 44 | 45 | # For Cygwin, ensure paths are in UNIX format before anything is touched. 46 | if $cygwin ; then 47 | [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"` 48 | fi 49 | 50 | # Attempt to set APP_HOME 51 | # Resolve links: $0 may be a link 52 | PRG="$0" 53 | # Need this for relative symlinks. 54 | while [ -h "$PRG" ] ; do 55 | ls=`ls -ld "$PRG"` 56 | link=`expr "$ls" : '.*-> \(.*\)$'` 57 | if expr "$link" : '/.*' > /dev/null; then 58 | PRG="$link" 59 | else 60 | PRG=`dirname "$PRG"`"/$link" 61 | fi 62 | done 63 | SAVED="`pwd`" 64 | cd "`dirname \"$PRG\"`/" >&- 65 | APP_HOME="`pwd -P`" 66 | cd "$SAVED" >&- 67 | 68 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 69 | 70 | # Determine the Java command to use to start the JVM. 71 | if [ -n "$JAVA_HOME" ] ; then 72 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 73 | # IBM's JDK on AIX uses strange locations for the executables 74 | JAVACMD="$JAVA_HOME/jre/sh/java" 75 | else 76 | JAVACMD="$JAVA_HOME/bin/java" 77 | fi 78 | if [ ! -x "$JAVACMD" ] ; then 79 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 80 | 81 | Please set the JAVA_HOME variable in your environment to match the 82 | location of your Java installation." 83 | fi 84 | else 85 | JAVACMD="java" 86 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 87 | 88 | Please set the JAVA_HOME variable in your environment to match the 89 | location of your Java installation." 90 | fi 91 | 92 | # Increase the maximum file descriptors if we can. 93 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 94 | MAX_FD_LIMIT=`ulimit -H -n` 95 | if [ $? -eq 0 ] ; then 96 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 97 | MAX_FD="$MAX_FD_LIMIT" 98 | fi 99 | ulimit -n $MAX_FD 100 | if [ $? -ne 0 ] ; then 101 | warn "Could not set maximum file descriptor limit: $MAX_FD" 102 | fi 103 | else 104 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 105 | fi 106 | fi 107 | 108 | # For Darwin, add options to specify how the application appears in the dock 109 | if $darwin; then 110 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 111 | fi 112 | 113 | # For Cygwin, switch paths to Windows format before running java 114 | if $cygwin ; then 115 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 116 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 158 | function splitJvmOpts() { 159 | JVM_OPTS=("$@") 160 | } 161 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 162 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 163 | 164 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 165 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | rootProject.name = 'com.karumi.maxibonskata' 2 | 3 | -------------------------------------------------------------------------------- /src/main/java/com/karumi/maxibonkata/Chat.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 Karumi. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.karumi.maxibonkata; 18 | 19 | public interface Chat { 20 | 21 | void sendMessage(String message); 22 | } 23 | -------------------------------------------------------------------------------- /src/main/java/com/karumi/maxibonkata/ConsoleChat.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 Karumi. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.karumi.maxibonkata; 18 | 19 | public class ConsoleChat implements Chat { 20 | 21 | @Override public void sendMessage(String message) { 22 | System.out.println(message); 23 | } 24 | 25 | } 26 | -------------------------------------------------------------------------------- /src/main/java/com/karumi/maxibonkata/Developer.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 Karumi. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.karumi.maxibonkata; 18 | 19 | class Developer { 20 | 21 | private final String name; 22 | private final int numberOfMaxibonsToGrab; 23 | 24 | Developer(String name, int numberOfMaxibonsToGrab) { 25 | if (numberOfMaxibonsToGrab < 0) { 26 | numberOfMaxibonsToGrab = 0; 27 | } 28 | this.name = name; 29 | this.numberOfMaxibonsToGrab = numberOfMaxibonsToGrab; 30 | } 31 | 32 | public String getName() { 33 | return name; 34 | } 35 | 36 | public int getNumberOfMaxibonsToGrab() { 37 | return numberOfMaxibonsToGrab; 38 | } 39 | 40 | @Override public String toString() { 41 | return "Developer{" 42 | + "name='" + name + '\'' 43 | + ", numberOfMaxibonsToGrab=" + numberOfMaxibonsToGrab 44 | + '}'; 45 | } 46 | } 47 | -------------------------------------------------------------------------------- /src/main/java/com/karumi/maxibonkata/KarumiHQs.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 Karumi. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.karumi.maxibonkata; 18 | 19 | import java.util.Collections; 20 | import java.util.List; 21 | 22 | public class KarumiHQs { 23 | 24 | private final Chat chat; 25 | 26 | private int maxibonsLeft; 27 | 28 | public KarumiHQs() { 29 | this(new ConsoleChat()); 30 | } 31 | 32 | public KarumiHQs(Chat chat) { 33 | this.chat = chat; 34 | this.maxibonsLeft = 10; 35 | } 36 | 37 | public void openFridge(Developer developer) { 38 | openFridge(Collections.singletonList(developer)); 39 | } 40 | 41 | public void openFridge(List developers) { 42 | for (Developer developer : developers) { 43 | grabMaxibons(developer); 44 | if (shouldBuyMoreMaxibons()) { 45 | notifyWeShouldBuyMaxibon(developer); 46 | buyMaxibons(); 47 | } 48 | } 49 | } 50 | 51 | private void grabMaxibons(Developer developer) { 52 | maxibonsLeft -= developer.getNumberOfMaxibonsToGrab(); 53 | if (maxibonsLeft < 0) { 54 | maxibonsLeft = 0; 55 | } 56 | } 57 | 58 | private boolean shouldBuyMoreMaxibons() { 59 | return maxibonsLeft <= 2; 60 | } 61 | 62 | private void notifyWeShouldBuyMaxibon(Developer developer) { 63 | chat.sendMessage("Hi guys, I'm " + developer.getName() + ". We need more maxibons!"); 64 | } 65 | 66 | private void buyMaxibons() { 67 | maxibonsLeft += 10; 68 | } 69 | 70 | public int getMaxibonsLeft() { 71 | return maxibonsLeft; 72 | } 73 | } 74 | -------------------------------------------------------------------------------- /src/main/java/com/karumi/maxibonkata/Karumies.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 Karumi. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.karumi.maxibonkata; 18 | 19 | public class Karumies { 20 | 21 | public static final Developer PEDRO = new Developer("Pedro", 3); 22 | public static final Developer ALBERTO = new Developer("Alberto", 1); 23 | public static final Developer DAVIDE = new Developer("Davide", 0); 24 | public static final Developer SERGIO = new Developer("Sergio", 2); 25 | public static final Developer JORGE = new Developer("Jorge", 1); 26 | 27 | } 28 | -------------------------------------------------------------------------------- /src/test/java/com/karumi/maxibonkata/DeveloperProperties.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 Karumi. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.karumi.maxibonkata; 18 | 19 | import com.pholser.junit.quickcheck.Property; 20 | import com.pholser.junit.quickcheck.runner.JUnitQuickcheck; 21 | import org.junit.Test; 22 | import org.junit.runner.RunWith; 23 | 24 | import static junit.framework.Assert.assertTrue; 25 | import static junit.framework.TestCase.assertEquals; 26 | 27 | @RunWith(JUnitQuickcheck.class) public class DeveloperProperties { 28 | 29 | private static final String ANY_NAME = "Pedro"; 30 | private static final int ANY_NUMBER_OF_MAXIBONS = 1; 31 | 32 | @Property public void theNumberOfMaxibonsAssignedIsPositiveOrZero(int numberOfMaxibons) { 33 | Developer developer = new Developer(ANY_NAME, numberOfMaxibons); 34 | assertTrue(developer.getNumberOfMaxibonsToGrab() >= 0); 35 | } 36 | 37 | @Property public void theNameIsAssignedInConstruction(String name) { 38 | Developer developer = new Developer(name, ANY_NUMBER_OF_MAXIBONS); 39 | assertEquals(name, developer.getName()); 40 | } 41 | 42 | @Test public void theNumberOfMaxibonsAssociatedToEveryKarumieIsAlreadyAssigned() { 43 | assertEquals(3, Karumies.PEDRO.getNumberOfMaxibonsToGrab()); 44 | assertEquals(0, Karumies.DAVIDE.getNumberOfMaxibonsToGrab()); 45 | assertEquals(1, Karumies.ALBERTO.getNumberOfMaxibonsToGrab()); 46 | assertEquals(2, Karumies.SERGIO.getNumberOfMaxibonsToGrab()); 47 | assertEquals(1, Karumies.JORGE.getNumberOfMaxibonsToGrab()); 48 | } 49 | } 50 | -------------------------------------------------------------------------------- /src/test/java/com/karumi/maxibonkata/DevelopersGenerator.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 Karumi. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.karumi.maxibonkata; 18 | 19 | import com.pholser.junit.quickcheck.generator.GenerationStatus; 20 | import com.pholser.junit.quickcheck.generator.Generator; 21 | import com.pholser.junit.quickcheck.random.SourceOfRandomness; 22 | import org.apache.commons.lang3.RandomStringUtils; 23 | 24 | public class DevelopersGenerator extends Generator { 25 | 26 | public DevelopersGenerator() { 27 | super(Developer.class); 28 | } 29 | 30 | @Override public Developer generate(SourceOfRandomness random, GenerationStatus status) { 31 | String name = RandomStringUtils.randomAlphabetic(random.nextInt(16)); 32 | int numberOfMaxibons = random.nextInt(0, Integer.MAX_VALUE); 33 | return new Developer(name, numberOfMaxibons); 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /src/test/java/com/karumi/maxibonkata/HungryDevelopersGenerator.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 Karumi. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.karumi.maxibonkata; 18 | 19 | import com.pholser.junit.quickcheck.generator.GenerationStatus; 20 | import com.pholser.junit.quickcheck.generator.Generator; 21 | import com.pholser.junit.quickcheck.random.SourceOfRandomness; 22 | import org.apache.commons.lang3.RandomStringUtils; 23 | 24 | public class HungryDevelopersGenerator extends Generator { 25 | 26 | public HungryDevelopersGenerator() { 27 | super(Developer.class); 28 | } 29 | 30 | @Override public Developer generate(SourceOfRandomness random, GenerationStatus status) { 31 | String name = RandomStringUtils.randomAlphabetic(random.nextInt(16)); 32 | int numberOfMaxibons = random.nextInt(8, 10); 33 | return new Developer(name, numberOfMaxibons); 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /src/test/java/com/karumi/maxibonkata/KarumiHQsProperties.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 Karumi. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.karumi.maxibonkata; 18 | 19 | import com.pholser.junit.quickcheck.From; 20 | import com.pholser.junit.quickcheck.Property; 21 | import com.pholser.junit.quickcheck.runner.JUnitQuickcheck; 22 | import java.util.List; 23 | import org.junit.Before; 24 | import org.junit.Test; 25 | import org.junit.runner.RunWith; 26 | 27 | import static junit.framework.TestCase.assertEquals; 28 | import static junit.framework.TestCase.assertTrue; 29 | import static org.mockito.Mockito.mock; 30 | import static org.mockito.Mockito.never; 31 | import static org.mockito.Mockito.verify; 32 | 33 | @RunWith(JUnitQuickcheck.class) public class KarumiHQsProperties { 34 | 35 | private KarumiHQs karumiHQs; 36 | private Chat chat; 37 | 38 | @Before public void setUp() { 39 | chat = mock(Chat.class); 40 | karumiHQs = new KarumiHQs(chat); 41 | } 42 | 43 | @Test public void theNumberOfInitialMaxibonsAreTen() { 44 | assertEquals(10, karumiHQs.getMaxibonsLeft()); 45 | } 46 | 47 | @Property public void theNumberOfMaxibonsCanNeverBeLowerThanTwo( 48 | @From(DevelopersGenerator.class) Developer developer) { 49 | karumiHQs.openFridge(developer); 50 | 51 | assertTrue(karumiHQs.getMaxibonsLeft() > 2); 52 | } 53 | 54 | @Property public void ifThereAreLessThanTwoMaxibonLeft10MaxibonsAreAutomaticallyBought( 55 | @From(HungryDevelopersGenerator.class) Developer developer) { 56 | int initialMaxibons = karumiHQs.getMaxibonsLeft(); 57 | karumiHQs.openFridge(developer); 58 | 59 | int expectedMaxibons = 60 | getMaxibonsAfterOpeningTheFridge(initialMaxibons, developer.getNumberOfMaxibonsToGrab()); 61 | assertEquals(expectedMaxibons, karumiHQs.getMaxibonsLeft()); 62 | } 63 | 64 | @Property public void ifThereAreLessThanTwoMaxibonsLeftAMessageIsSentRequestingMore( 65 | @From(HungryDevelopersGenerator.class) Developer developer) { 66 | karumiHQs.openFridge(developer); 67 | 68 | verify(chat).sendMessage("Hi guys, I'm " + developer.getName() + ". We need more maxibons!"); 69 | } 70 | 71 | @Property public void ifThereAreMoreThanTwoMaxibonsLeftNoMessagesAreSentOrderingMore( 72 | @From(NotSoHungryDevelopersGenerator.class) Developer developer) { 73 | karumiHQs.openFridge(developer); 74 | 75 | verify(chat, never()).sendMessage( 76 | "Hi guys, I'm " + developer.getName() + ". We need more maxibons!"); 77 | } 78 | 79 | @Property public void ifSomeKarumiesGoToTheKitchenTheNumberOfMaxibonsCanNotBeLowerThanTwo( 80 | List<@From(KarumiesGenerator.class) Developer> developers) { 81 | karumiHQs.openFridge(developers); 82 | assertTrue(karumiHQs.getMaxibonsLeft() > 2); 83 | } 84 | 85 | @Property public void ifSomeKarumiesGoToTheKitchenTheNumberOfMaxibonsShouldBeTheExpectedOne( 86 | List<@From(KarumiesGenerator.class) Developer> developers) { 87 | int initialMaxibons = karumiHQs.getMaxibonsLeft(); 88 | karumiHQs.openFridge(developers); 89 | 90 | int expectedMaxibons = calculateMaxibonsLeft(initialMaxibons, developers); 91 | assertEquals(expectedMaxibons, karumiHQs.getMaxibonsLeft()); 92 | } 93 | 94 | private int calculateMaxibonsLeft(int initialMaxibons, List developers) { 95 | int maxibonsLeft = initialMaxibons; 96 | for (Developer developer : developers) { 97 | maxibonsLeft -= developer.getNumberOfMaxibonsToGrab(); 98 | if (maxibonsLeft < 0) { 99 | maxibonsLeft = 0; 100 | } 101 | if (maxibonsLeft <= 2) { 102 | maxibonsLeft += 10; 103 | } 104 | } 105 | return maxibonsLeft; 106 | } 107 | 108 | private int getMaxibonsAfterOpeningTheFridge(int initialMaxibons, int numberOfMaxibonsToGrab) { 109 | int maxibonsLeft = initialMaxibons; 110 | maxibonsLeft -= numberOfMaxibonsToGrab; 111 | if (maxibonsLeft < 0) { 112 | maxibonsLeft = 0; 113 | } 114 | if (maxibonsLeft <= 2) { 115 | maxibonsLeft += 10; 116 | } 117 | return maxibonsLeft; 118 | } 119 | } 120 | 121 | -------------------------------------------------------------------------------- /src/test/java/com/karumi/maxibonkata/KarumiesGenerator.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 Karumi. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.karumi.maxibonkata; 18 | 19 | import com.pholser.junit.quickcheck.generator.GenerationStatus; 20 | import com.pholser.junit.quickcheck.generator.Generator; 21 | import com.pholser.junit.quickcheck.random.SourceOfRandomness; 22 | 23 | public class KarumiesGenerator extends Generator { 24 | 25 | private static final Developer[] KARUMIES = new Developer[] { 26 | Karumies.PEDRO, Karumies.ALBERTO, Karumies.DAVIDE, Karumies.JORGE, Karumies.SERGIO 27 | }; 28 | 29 | public KarumiesGenerator() { 30 | super(Developer.class); 31 | } 32 | 33 | @Override public Developer generate(SourceOfRandomness random, GenerationStatus status) { 34 | return KARUMIES[random.nextInt(5)]; 35 | } 36 | } 37 | -------------------------------------------------------------------------------- /src/test/java/com/karumi/maxibonkata/NotSoHungryDevelopersGenerator.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 Karumi. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.karumi.maxibonkata; 18 | 19 | import com.pholser.junit.quickcheck.generator.GenerationStatus; 20 | import com.pholser.junit.quickcheck.generator.Generator; 21 | import com.pholser.junit.quickcheck.random.SourceOfRandomness; 22 | import org.apache.commons.lang3.RandomStringUtils; 23 | 24 | public class NotSoHungryDevelopersGenerator extends Generator { 25 | 26 | public NotSoHungryDevelopersGenerator() { 27 | super(Developer.class); 28 | } 29 | 30 | @Override public Developer generate(SourceOfRandomness random, GenerationStatus status) { 31 | String name = RandomStringUtils.randomAlphabetic(random.nextInt(16)); 32 | int numberOfMaxibons = random.nextInt(0, 7); 33 | return new Developer(name, numberOfMaxibons); 34 | } 35 | } 36 | --------------------------------------------------------------------------------