.idea/compiler.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <annotationProcessing>
+      <profile name="Maven default annotation processors profile" enabled="true">
+        <sourceOutputDir name="target/generated-sources/annotations" />
+        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
+        <outputRelativeToContentRoot value="true" />
+        <module name="unit-test" />
+      </profile>
+    </annotationProcessing>
+  </component>
+</project>

.idea/jarRepositories.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Central Repository" />
+      <option name="url" value="https://repo.maven.apache.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+  </component>
+</project>

.idea/misc.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_25" default="true" project-jdk-name="25" project-jdk-type="JavaSDK" />
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

.idea/workspace.xml

@@ -0,0 +1,93 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AutoImportSettings">
+    <option name="autoReloadType" value="SELECTIVE" />
+  </component>
+  <component name="ChangeListManager">
+    <list default="true" id="584a2518-0bc5-4360-bc03-3335f62346fb" name="Changes" comment="commit unit-develop" />
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
+  </component>
+  <component name="ProjectColorInfo">{
+  &quot;customColor&quot;: &quot;&quot;,
+  &quot;associatedIndex&quot;: 6
+}</component>
+  <component name="ProjectId" id="3HBqDO3prNwKXkNae6M7Qu2HsQk" />
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent"><![CDATA[{
+  "keyToString": {
+    "Maven.unit-test [org.apache.maven.plugins:maven-clean-plugin:3.2.0:clean].executor": "Run",
+    "ModuleVcsDetector.initialDetectionPerformed": "true",
+    "RunOnceActivity.ShowReadmeOnStart": "true",
+    "RunOnceActivity.TerminalTabsStorage.copyFrom.TerminalArrangementManager.252": "true",
+    "RunOnceActivity.git.unshallow": "true",
+    "TestNG.NegativeCalculatorTest.negativeTest.executor": "Run",
+    "TestNG.PositiveCalculatorTest.positiveTest.executor": "Run",
+    "git-widget-placeholder": "unit-develop",
+    "kotlin-language-version-configured": "true"
+  }
+}]]></component>
+  <component name="RunManager" selected="TestNG.NegativeCalculatorTest.negativeTest">
+    <configuration name="NegativeCalculatorTest.negativeTest" type="TestNG" temporary="true" nameIsGenerated="true">
+      <module name="unit-test" />
+      <option name="PACKAGE_NAME" value="" />
+      <option name="MAIN_CLASS_NAME" value="NegativeCalculatorTest" />
+      <option name="METHOD_NAME" value="negativeTest" />
+      <option name="TEST_OBJECT" value="METHOD" />
+      <properties />
+      <listeners />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="PositiveCalculatorTest.positiveTest" type="TestNG" temporary="true" nameIsGenerated="true">
+      <module name="unit-test" />
+      <option name="PACKAGE_NAME" value="" />
+      <option name="MAIN_CLASS_NAME" value="PositiveCalculatorTest" />
+      <option name="METHOD_NAME" value="positiveTest" />
+      <option name="TEST_OBJECT" value="METHOD" />
+      <properties />
+      <listeners />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <recent_temporary>
+      <list>
+        <item itemvalue="TestNG.NegativeCalculatorTest.negativeTest" />
+        <item itemvalue="TestNG.PositiveCalculatorTest.positiveTest" />
+      </list>
+    </recent_temporary>
+  </component>
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="584a2518-0bc5-4360-bc03-3335f62346fb" name="Changes" comment="" />
+      <created>1785351688906</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1785351688906</updated>
+    </task>
+    <task id="LOCAL-00001" summary="commit unit-develop">
+      <option name="closed" value="true" />
+      <created>1785410404811</created>
+      <option name="number" value="00001" />
+      <option name="presentableId" value="LOCAL-00001" />
+      <option name="project" value="LOCAL" />
+      <updated>1785410404811</updated>
+    </task>
+    <option name="localTasksCounter" value="2" />
+    <servers />
+  </component>
+  <component name="VcsManagerConfiguration">
+    <MESSAGE value="commit unit-develop" />
+    <option name="LAST_COMMIT_MESSAGE" value="commit unit-develop" />
+  </component>
+</project>

README.md

@@ -1 +0,0 @@
-Примеры выполнения заданий 

pom.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>unit-test</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <!-- todo: добавить необходимые зависимости -->
+        <dependency>
+            <groupId>org.testng</groupId>
+            <artifactId>testng</artifactId>
+            <version>7.10.2</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+</project>

src/main/java/Main.java

@@ -0,0 +1,20 @@
+import model.Calculator;
+
+import java.util.Scanner;
+
+public class Main {
+    public static void main(String[] args) {
+        String[] params = readParams();
+        System.out.println(Calculator.execute(params));
+    }
+
+    private static String[] readParams() {
+        // todo: считать из консоли данные, затем вернуть их в виде массива строк
+        Scanner in = new Scanner(System.in);
+
+        String operator = in.nextLine();
+        String value1 = in.nextLine();
+        String value2 = in.nextLine();
+        return new String[]{operator, value1, value2};
+    }
+}

src/main/java/model/Calculator.java

@@ -0,0 +1,68 @@
+package model;
+
+public class Calculator {
+
+    public static String execute(String[] params) {
+        String operator = params[0];
+        double value1;
+        double value2;
+        // todo: доработать код, чтобы все негативные тесты проходили успешно
+        //value1 = Double.parseDouble(params[1]);
+        //value2 = Double.parseDouble(params[2]);
+        value1 = validDouble(params[1]);
+        value2 = validDouble(params[2]);
+        double result = calculate(operator, value1, value2);
+        if (result > Integer.MAX_VALUE || result < Integer.MIN_VALUE) {
+            throw new CalculatorException("Превышен порог значений");
+        }
+        return String.valueOf(result);
+    }
+
+    private static double calculate(String operator, double a, double b) {
+        if (operator == null) {
+            throw new CalculatorException("Оператор не может быть null");
+        }
+        switch (operator) {
+            case "+":
+                return add(a, b);
+            case "-":
+                return subst(a, b);
+            case "*":
+                return mult(a, b);
+            case "/":
+                return div(a, b);
+        }
+        throw new CalculatorException("Неизвестный оператор");
+    }
+
+    private static double add(double a, double b) {
+        return a + b;
+    }
+
+    private static double subst(double a, double b) {
+        return a - b;
+    }
+
+    private static double div(double a, double b) {
+        if (b == 0) {
+            throw new CalculatorException();
+        }
+        return a / b;
+    }
+
+    private static double mult(double a, double b) {
+        return a * b;
+    }
+
+    private static double validDouble (String number) throws CalculatorException{
+        if (number == null) {
+            throw new CalculatorException("Число не может быть null");
+        }
+        try{
+            return Double.parseDouble(number);
+        }
+        catch (NumberFormatException e){
+            throw new CalculatorException("Некорректное число: " + number, e);
+        }
+    }
+}

src/main/java/model/CalculatorException.java

@@ -0,0 +1,23 @@
+package model;
+
+public class CalculatorException extends RuntimeException {
+
+    private static final long serialVersionUID = -1135355618665392597L;
+    private static final String MESSAGE = "Ошибка вычисления!";
+
+    public CalculatorException() {
+        super(MESSAGE);
+    }
+
+    public CalculatorException(String str) {
+        super(MESSAGE + " " + str);
+    }
+
+    public CalculatorException(Throwable e) {
+        super(MESSAGE, e);
+    }
+
+    public CalculatorException(String str, Throwable e) {
+        super(MESSAGE + " " + str, e);
+    }
+}

src/test/java/NegativeCalculatorTest.java

@@ -0,0 +1,48 @@
+import model.Calculator;
+import model.CalculatorException;
+import org.testng.Assert;
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
+
+public class NegativeCalculatorTest {
+    // todo: @DataProvider for negativeData
+    // todo: negative test
+    @DataProvider
+    public Object[][] negativeData(){
+        return new Object [][]{
+                {"+", String.valueOf(Integer.MAX_VALUE), "1"},
+                {"+", String.valueOf(Integer.MIN_VALUE), "-1"},
+                {"*", String.valueOf((double)Integer.MAX_VALUE+1), "2"},
+                {"*", String.valueOf((double)Integer.MIN_VALUE-1), "2"},
+
+                {"/", "10", "0"},
+
+                {"+", "", "5"},
+                {"-", "3", ""},
+                {"*", "", ""},
+
+                {"+", "abc", "5"},
+                {"-", "3", "xyz"},
+                {"*", "12.5a", "3"},
+                {"/", "4", "2.3.5"},
+
+                {"+", "@#$", "5"},
+                {"-", "3", "!@#"},
+
+                {"+", " ", "5"},
+                {"-", "3", " "},
+
+                {"", "10", "5"},
+                {"=", "5", "3"},
+
+                {null, "5", "3"},
+                {"+", null, "3"},
+        };
+    }
+
+    @Test (dataProvider = "negativeData", expectedExceptions = CalculatorException.class)
+    public void negativeTest(String operator, String a, String b){
+        String[] params = {operator, a, b};
+        Calculator.execute(params);
+    }
+}

src/test/java/PositiveCalculatorTest.java

@@ -0,0 +1,43 @@
+import model.Calculator;
+import org.testng.Assert;
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
+
+public class PositiveCalculatorTest {
+    // todo: @DataProvider for positiveData
+    // todo: positive test
+    @DataProvider
+    public Object[][] positiveData(){
+        return new Object [][]{
+                {"+", "3", "4", 7.0},
+                {"+", "10.5", "2.3", 12.8},
+                {"+", "-5.5", "3.2", -2.3},
+
+                {"-", "10", "5", 5.0},
+                {"-", "15.7", "3.2", 12.5},
+                {"-", "-2.5", "-1.5", -1.0},
+
+                {"*", "3", "0", 0.0},
+                {"*", "2.5", "4.0", 10.0},
+                {"*", "-3.0", "2.5", -7.5},
+
+                {"/", "10", "2", 5.0},
+                {"/", "15.0", "4.0", 3.75},
+                {"/", "-10.0", "4.0", -2.5},
+
+
+                {"+", String.valueOf(Integer.MAX_VALUE - 1), "1", (double)Integer.MAX_VALUE},
+                {"+", String.valueOf(Integer.MIN_VALUE + 1), "-1", (double)Integer.MIN_VALUE},
+                {"*", String.valueOf(Integer.MIN_VALUE), "1", (double)Integer.MIN_VALUE},
+                {"/", String.valueOf(Integer.MAX_VALUE), "2", (double)Integer.MAX_VALUE/2},
+        };
+    }
+
+    @Test(dataProvider = "positiveData")
+    public void positiveTest(String operator, String a, String b, double expected){
+        String[] params = {operator, a, b};
+        double result = Double.parseDouble(Calculator.execute(params));
+        Assert.assertEquals(result, expected, 0.001);
+    }
+
+}