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create utility files
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‎pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.hackerrank</groupId>
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<artifactId>junit-ordered-test-runner</artifactId>
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<version>1.0</version>
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<packaging>jar</packaging>
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<name>${project.groupId}:${project.artifactId}</name>
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<description>An application to provide support for executing tests in the specific order
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and generate the customized XML report.
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</description>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>1.8</maven.compiler.source>
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<maven.compiler.target>1.8</maven.compiler.target>
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</properties>
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<licenses>
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<license>
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<name>Apache License 2.0</name>
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<url>http://opensource.org/licenses/Apache-2.0</url>
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</license>
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</licenses>
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<developers>
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<developer>
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<name>Abhimanyu Singh</name>
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<email>abhimanyusingh@hackerrank.com</email>
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<organization>HackerRank</organization>
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<organizationUrl>https://www.hackerrank.com/</organizationUrl>
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</developer>
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</developers>
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<scm>
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<connection>scm:git:git://github.com/interviewstreet/junit-ordered-test-runner.git</connection>
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<developerConnection>scm:git:ssh://github.com:interviewstreet/junit-ordered-test-runner.git</developerConnection>
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<url>http://github.com/interviewstreet/junit-ordered-test-runner/tree/master</url>
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</scm>
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<dependencies>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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<type>jar</type>
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</dependency>
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<dependency>
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<groupId>com.fasterxml.jackson.core</groupId>
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<artifactId>jackson-databind</artifactId>
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<version>2.9.6</version>
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<type>jar</type>
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</dependency>
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<dependency>
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<groupId>commons-lang</groupId>
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<artifactId>commons-lang</artifactId>
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<version>2.6</version>
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<type>jar</type>
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</dependency>
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<dependency>
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<groupId>org.jdom</groupId>
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<artifactId>jdom</artifactId>
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<version>1.1</version>
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<type>jar</type>
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</dependency>
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</dependencies>
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</project>

‎src/main/java/com/hackerrank/test/utility/Color.java‎

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/*
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* Copyright 2018 HackerRank.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hackerrank.test.utility;
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/**
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*
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* @author Abhimanyu Singh
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* @author abhimanyusingh@hackerrank.com
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* @version 1.0
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* @since 1.0
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*/
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public class Color {
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public static final String RESET = "\033[0m";
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public static final String BLACK = "\033[0;30m";
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public static final String RED = "\033[0;31m";
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public static final String GREEN = "\033[0;32m";
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public static final String YELLOW = "\033[0;33m";
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public static final String BLUE = "\033[0;34m";
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public static final String WHITE = "\033[0;37m";
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public static final String BLACK_BOLD = "\033[1;30m";
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public static final String RED_BOLD = "\033[1;31m";
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public static final String GREEN_BOLD = "\033[1;32m";
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public static final String YELLOW_BOLD = "\033[1;33m";
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public static final String BLUE_BOLD = "\033[1;34m";
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public static final String WHITE_BOLD = "\033[1;37m";
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}

‎src/main/java/com/hackerrank/test/utility/NumberFormatter.java‎

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/*
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* Copyright 2018 HackerRank.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hackerrank.test.utility;
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import java.math.BigDecimal;
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/**
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*
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* @author Abhimanyu Singh
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* @author abhimanyusingh@hackerrank.com
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* @version 1.0
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* @since 1.0
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*/
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public class NumberFormatter {
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/**
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*
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* @param value double value
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* @param precision number of decimal places
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* @return string representation of rounded double to fixed decimal places
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*/
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public static String stringValue(double value, int precision) {
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return new BigDecimal(value)
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.setScale(precision, BigDecimal.ROUND_HALF_EVEN)
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.toString();
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}
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/**
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*
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* @param value double value
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* @param precision number of decimal places
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* @return rounded double to fixed decimal places
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*/
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public static double doubleValue(double value, int precision) {
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return new BigDecimal(value)
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.setScale(precision, BigDecimal.ROUND_HALF_EVEN)
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.doubleValue();
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}
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}

‎src/main/java/com/hackerrank/test/utility/Order.java‎

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/*
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* Copyright 2018 HackerRank.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hackerrank.test.utility;
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import java.lang.annotation.ElementType;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.lang.annotation.Target;
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/**
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*
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* @author Abhimanyu Singh
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* @author abhimanyusingh@hackerrank.com
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* @version 1.0
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* @since 1.0
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*/
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@Retention(RetentionPolicy.RUNTIME)
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@Target({
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ElementType.METHOD
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})
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public @interface Order {
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/**
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*
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* @return order
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*/
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public int value();
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}

‎src/main/java/com/hackerrank/test/utility/OrderedTestRunner.java‎

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/*
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* Copyright 2018 HackerRank.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hackerrank.test.utility;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import static java.util.stream.Collectors.toList;
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import org.junit.runners.BlockJUnit4ClassRunner;
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import org.junit.runners.model.FrameworkMethod;
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import org.junit.runners.model.InitializationError;
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/**
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*
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* @author Abhimanyu Singh
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* @author abhimanyusingh@hackerrank.com
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* @version 1.0
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* @since 1.0
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*/
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public class OrderedTestRunner extends BlockJUnit4ClassRunner {
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/**
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*
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* @param clazz test class
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* @throws InitializationError initialization error
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*/
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public OrderedTestRunner(Class<?> clazz) throws InitializationError {
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super(clazz);
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}
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/**
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*
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* @return test methods ordered by execution order
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*/
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@Override
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protected List<FrameworkMethod> computeTestMethods() {
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Map<FrameworkMethod, Integer> orders = new HashMap();
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List<FrameworkMethod> methods = super.computeTestMethods();
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int maxOrder = 0;
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for (FrameworkMethod method : methods) {
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Order order = method.getAnnotation(Order.class);
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maxOrder = Math.max(maxOrder, order == null ? 0 : order.value());
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orders.put(method, order == null ? null : order.value());
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}
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final int order = maxOrder + 1;
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methods.forEach(method -> orders.computeIfAbsent(method, value -> order));
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return methods.stream()
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.sorted((f1, f2) -> orders.get(f1) - orders.get(f2))
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.collect(toList());
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}
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}

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