diff --git a/Calculator/.gitignore b/Calculator/.gitignore new file mode 100644 index 000000000..d509c26f9 --- /dev/null +++ b/Calculator/.gitignore @@ -0,0 +1,55 @@ +HELP.md +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### Java ### +# Compiled class file +*.class + +.idea +.idea/**/dataSources/ +.idea/**/dataSources.ids +.idea/**/dataSources.local.xml +.idea/**/sqlDataSources.xml +.idea/**/dynamic.xml +.idea/**/uiDesigner.xml +.idea/**/dbnavigator.xml + +# Gradle +.idea/**/gradle.xml +.idea/**/libraries + +# Gradle and Maven with auto-import +# When using Gradle or Maven with auto-import, you should exclude module files, +# since they will be recreated, and may cause churn. Uncomment if using +# auto-import. +.idea/artifacts +.idea/compiler.xml +.idea/jarRepositories.xml +.idea/modules.xml +.idea/*.iml +.idea/modules +*.iml +*.ipr +*.iws + +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ +.idea/caches/build_file_checksums.ser +.idea/$CACHE_FILE$ + +# Package Files # +*.jar +*.war +*.nar +*.ear +*.zip +*.tar.gz +*.rar + +# Log file +*.log \ No newline at end of file diff --git a/Calculator/build.gradle b/Calculator/build.gradle new file mode 100644 index 000000000..2ed2b1786 --- /dev/null +++ b/Calculator/build.gradle @@ -0,0 +1,21 @@ +plugins { + id 'java' +} + +group 'com.devcourse' +version '1.0-SNAPSHOT' + +repositories { + mavenCentral() +} + +dependencies { + testImplementation 'org.junit.jupiter:junit-jupiter-api:5.9.2' + testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.9.2' + + testImplementation 'org.assertj:assertj-core:3.24.2' +} + +test { + useJUnitPlatform() +} \ No newline at end of file diff --git a/Calculator/gradle/wrapper/gradle-wrapper.properties b/Calculator/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 000000000..41dfb8790 --- /dev/null +++ b/Calculator/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/Calculator/gradlew b/Calculator/gradlew new file mode 100755 index 000000000..1b6c78733 --- /dev/null +++ b/Calculator/gradlew @@ -0,0 +1,234 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/Calculator/gradlew.bat b/Calculator/gradlew.bat new file mode 100644 index 000000000..ac1b06f93 --- /dev/null +++ b/Calculator/gradlew.bat @@ -0,0 +1,89 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%" == "" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%" == "" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if "%ERRORLEVEL%" == "0" goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if "%ERRORLEVEL%"=="0" goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/Calculator/settings.gradle b/Calculator/settings.gradle new file mode 100644 index 000000000..930f769a2 --- /dev/null +++ b/Calculator/settings.gradle @@ -0,0 +1,2 @@ +rootProject.name = 'Calculator' + diff --git a/Calculator/src/main/java/CalculateService.java b/Calculator/src/main/java/CalculateService.java new file mode 100644 index 000000000..370c3f034 --- /dev/null +++ b/Calculator/src/main/java/CalculateService.java @@ -0,0 +1,165 @@ +import java.util.Deque; +import java.util.LinkedList; +import java.util.Scanner; + +public class CalculateService implements CalculatorFunction { + + private String name; + private LinkedList expForCal = new LinkedList<>(); + private String result; + static StringBuilder num = new StringBuilder(); + static Deque queue = new LinkedList<>(); + + public CalculateService(String name) { + this.name = name; + } + + @Override + public void doService(Calculator calculator) { + + String expression; + LinkedList expForCal; + String result; + + while (true) { + try { + expression = readExpression(); + expForCal = fullTextParsing(expression); + result = calculate(expForCal); + break; + + } catch (Exception e) { + System.out.println("다시 입력해주세요."); + } + } + + System.out.println(result); + + calculator.getResultSaveService().save(new Result(expression, result)); + + } + + public String calculate(LinkedList expForCal) throws Exception { + return plusOrMinus(divideOrMultiple(expForCal)); + } + + public String plusOrMinus(LinkedList expression) { + + Double sum = Double.valueOf(0); + + while (!expression.isEmpty()) { + String current = expression.pollFirst(); + + if (current.equals("-")) { + sum -= Double.valueOf(expression.pollFirst()); + } else if (current.equals("+")) { + sum += Double.valueOf(expression.pollFirst()); + } else { + sum += Double.valueOf(current); + } + } + + String result = String.valueOf(sum); + int deciPoint = result.indexOf("."); + + // 정수 -> 소수점 제거 + if (deciPoint == result.length() - 2 && result.charAt(deciPoint + 1) == '0') { + return String.valueOf((Math.round(sum))); + } + + return String.valueOf(sum); + } + + public LinkedList divideOrMultiple(LinkedList expForCal) throws Exception { + + Double v; + + while (!expForCal.isEmpty()) { + String peek = expForCal.peek(); + + if (peek.equals("*")) { + expForCal.pollFirst(); + v = Double.parseDouble(queue.pollLast()) * Double.parseDouble(expForCal.poll()); + queue.add(String.valueOf(v)); + + } else if (peek.equals("/")) { + expForCal.pollFirst(); + v = Double.parseDouble(queue.pollLast()) / Double.parseDouble(expForCal.poll()); + + if (v.isInfinite() || v.isNaN()) { + System.out.print("0 으로 나눌 수 없습니다. "); + throw new ArithmeticException(); + } + + queue.add(String.valueOf(v)); + } else { + String poll = expForCal.pollFirst(); + queue.add(poll); + } + + } + + queue.stream().forEach(o -> expForCal.add(o)); + queue.clear(); + return expForCal; + } + + public String readExpression() { + Scanner scanner = new Scanner(System.in); + + String input = scanner.nextLine(); + String inputRefined = input.replaceAll("\\s", ""); + return inputRefined; + } + + public LinkedList fullTextParsing(String inputRefined) throws Exception { + + LinkedList equationElements = new LinkedList<>(); + + if (!isValidFormula(inputRefined)) { + System.out.printf("계산식이 올바르지 않습니다. "); + throw new Exception("BAD_INPUT"); + } + + for (int i = 0; i < inputRefined.length(); i++) { + char c = inputRefined.charAt(i); + + if (Character.isDigit(c)) { + num.append(c); + } else { + if (!num.isEmpty()) equationElements.add(num.toString()); + num.setLength(0); + equationElements.add(c + ""); + } + } + + equationElements.add(num.toString()); + num.setLength(0); + + return equationElements; + } + + public boolean isValidFormula(String inputRefined) { + + boolean startWithNum = true; + boolean onlyAllowed = true; + + char firstChar = inputRefined.charAt(0); + + if (firstChar == '+' || firstChar == '*' || firstChar == '/') { + System.out.println("유효하지 않은 수식입니다!"); + startWithNum = false; + } + + if (!inputRefined.matches("^([0-9/./+/*///-]*)[0-9]$")) { + onlyAllowed = false; + } + + return startWithNum && onlyAllowed; + } + + @Override + public String getName() { + return this.name; + } +} diff --git a/Calculator/src/main/java/Calculator.java b/Calculator/src/main/java/Calculator.java new file mode 100644 index 000000000..2e480c42b --- /dev/null +++ b/Calculator/src/main/java/Calculator.java @@ -0,0 +1,58 @@ +import java.util.HashMap; +import java.util.Map; +import java.util.Scanner; + +public class Calculator { + + private Integer optionNumber = 2; + private ResultSaveService resultSaveService; + private CalculateService calculateService; + private static Map menus = new HashMap<>(); + private StringBuilder menusBuilder = new StringBuilder(); + private CalculatorFunction calculatorFunction; + + public Calculator(ResultSaveService resultSaveService, CalculateService calculateService) { + this.resultSaveService = resultSaveService; + this.calculateService = calculateService; + } + + public static void main(String[] args) { + + ResultSaveService saveService = new ResultSaveService("조회"); + CalculateService calService = new CalculateService("계산"); + Calculator calculator = new Calculator(saveService, calService); + + calculator.menus.put(1, saveService); + calculator.menus.put(2, calService); + + + for (int i = 1; i <= calculator.menus.size(); i++) { + calculator.menusBuilder.append(i + ". " + menus.get(i).getName() + "\n"); + } + + calculator.menusBuilder.append("\n"); + calculator.menusBuilder.append("선택 : "); + + calculator.run(); + } + + private void run() { + + while (true) { + System.out.print(menusBuilder); + Scanner scanner = new Scanner(System.in); + + try { + calculatorFunction = menus.get(scanner.nextInt()); + calculatorFunction.doService(this); + } catch (Exception e) { + System.out.println("입력이 올바르지 않습니다.\n"); + } + + } + } + + public ResultSaveService getResultSaveService() { + return resultSaveService; + } +} diff --git a/Calculator/src/main/java/CalculatorFunction.java b/Calculator/src/main/java/CalculatorFunction.java new file mode 100644 index 000000000..248dab951 --- /dev/null +++ b/Calculator/src/main/java/CalculatorFunction.java @@ -0,0 +1,7 @@ +public interface CalculatorFunction { + + String name = null; + + void doService(Calculator calculator); + String getName(); +} diff --git a/Calculator/src/main/java/Result.java b/Calculator/src/main/java/Result.java new file mode 100644 index 000000000..e06b7e5d8 --- /dev/null +++ b/Calculator/src/main/java/Result.java @@ -0,0 +1,34 @@ +public class Result { + + private String expression; + private String answer; + + public Result(String expression, String answer) { + this.expression = formalize(expression); + this.answer = answer; + } + + private String formalize(String expression) { + StringBuilder sb = new StringBuilder(); + char c; + + for (int i = 0; i < expression.length(); i++) { + c = expression.charAt(i); + + if (!Character.isDigit(c)) sb.append(' ').append(c).append(' '); + else sb.append(c); + } + + if (sb.length() > 1 && sb.charAt(1) == '-') { + sb.deleteCharAt(2); + sb.deleteCharAt(0); + } + + return sb.toString(); + } + + public String fullEquation() { + return expression + " = " + answer + "\n"; + } + +} diff --git a/Calculator/src/main/java/ResultSaveService.java b/Calculator/src/main/java/ResultSaveService.java new file mode 100644 index 000000000..a9f3173c8 --- /dev/null +++ b/Calculator/src/main/java/ResultSaveService.java @@ -0,0 +1,38 @@ +import java.util.*; + +public class ResultSaveService implements CalculatorFunction { + + String name; + LinkedHashMap results = new LinkedHashMap<>(); + + public ResultSaveService(String name) { + this.name = name; + } + + @Override + public void doService(Calculator calculator) { + + if (results.size() == 0) { + + System.out.println("[ 조회된 계산이력 없음 ]\n"); + } else { + StringBuilder savedResults = new StringBuilder(); + Iterator iterator = results.keySet().iterator(); + + while(iterator.hasNext()) { + Result result = results.get(iterator.next()); + savedResults.append(result.fullEquation()); + } + System.out.println(savedResults); + } + } + + @Override + public String getName() { + return this.name; + } + + public void save(Result result) { + results.put(results.size() + 1, result); + } +} diff --git a/Calculator/src/test/java/CalculateServiceTest.java b/Calculator/src/test/java/CalculateServiceTest.java new file mode 100644 index 000000000..fd277eafb --- /dev/null +++ b/Calculator/src/test/java/CalculateServiceTest.java @@ -0,0 +1,78 @@ +import org.assertj.core.api.Assertions; +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.api.DisplayName; +import org.junit.jupiter.api.Test; + +import java.util.LinkedList; + +import static org.assertj.core.api.Assertions.assertThat; +import static org.assertj.core.api.Assertions.assertThatCode; +import static org.junit.jupiter.api.Assertions.*; + +class CalculateServiceTest { + + static private Calculator calculator; + static private CalculateService calculateService; + static private ResultSaveService resultSaveService; + + @BeforeEach + void setUp() { + resultSaveService = new ResultSaveService("조회"); + calculateService = new CalculateService("계산"); + calculator = new Calculator(resultSaveService, calculateService); + } + + @Test + @DisplayName("올바른 계산식") + void fullTextParsing() { + String inputRefined = "2+3/2*6"; + + assertThatCode(() -> calculateService.fullTextParsing(inputRefined)) + .doesNotThrowAnyException(); + } + + @Test + @DisplayName("유효하지 않은 연산자가 앞에 오는 경우") + void isValidFormula() { + + String badInput = "/2*4-3"; + assertThat(new CalculateService("test").isValidFormula(badInput)).isFalse(); + } + + @Test + @DisplayName("빼기 계산 검증") + public void calculate_test_minus() throws Exception { + + String goodInput = "1-10"; // -1 + LinkedList strings = calculateService.fullTextParsing(goodInput); + + Assertions.assertThat(calculateService.plusOrMinus(strings)).isEqualTo("-9"); + } + + @Test + @DisplayName("나누기 계산 검증") + public void calculate_test_divide() throws Exception { + String goodInput = "8/2"; // 4 + LinkedList strings = calculateService.fullTextParsing(goodInput); + + Assertions.assertThat(calculateService.calculate(strings)).isEqualTo("4"); + } + + @Test + @DisplayName("곱하기 계산 검증") + public void calculate_test_multiply() throws Exception { + String goodInput = "-2*1"; // -1 + LinkedList strings = calculateService.fullTextParsing(goodInput); + + Assertions.assertThat(calculateService.calculate(strings)).isEqualTo("-2"); + } + + @Test + @DisplayName("우선순위 계산 검증") + public void calculate_test_complex() throws Exception { + String goodInput = "3+2*4-1*3/3"; // 10 + LinkedList strings = calculateService.fullTextParsing(goodInput); + + Assertions.assertThat(calculateService.calculate(strings)).isEqualTo("10"); + } +} \ No newline at end of file