add json adapter

Author: quicklybly

analyzer/build.gradle.kts

@@ -13,7 +13,6 @@ dependencies {
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
 }
 
-
 tasks.test {
     useJUnitPlatform()
-}
+}

analyzer/src/main/java/com/quicklybly/itmo/bytecodeanalyzer/Analyzer.java

@@ -22,7 +22,7 @@ public static void main(String[] args) throws IOException {
         var analyzer = new Analyzer();
 
         var statistic = analyzer.analyzeJar(path);
-        statistic.printStatistic();
+        System.out.println(statistic);
     }
 
     public Statistic analyzeJar(Path path) throws IOException {

analyzer/src/main/java/com/quicklybly/itmo/bytecodeanalyzer/api/Statistic.java

@@ -24,15 +24,34 @@ public void writeOverriddenCount(int overriddenCount) {
         averageOverriddenCountHolder.updateAverage(overriddenCount);
     }
 
-    public void printStatistic() {
-        System.out.println("Average field count: " + fieldAverageHolder.getAverage());
-        System.out.println("ABC: " + abcMetric.getAbc());
-        System.out.println("Inheritance max depth: " + maxInheritanceDepth);
-        System.out.println("Inheritance average depth: " + averageInheritanceDepthHolder.getAverage());
-        System.out.println("Average override count: " + averageOverriddenCountHolder.getAverage());
+    @Override
+    public String toString() {
+        return "Statistic{" +
+                "fieldAverageHolder=" + fieldAverageHolder +
+                ", averageInheritanceDepthHolder=" + averageInheritanceDepthHolder +
+                ", averageOverriddenCountHolder=" + averageOverriddenCountHolder +
+                ", maxInheritanceDepth=" + maxInheritanceDepth +
+                ", abcMetric=" + abcMetric +
+                '}';
     }
 
     public AbcMetric getAbcMetric() {
         return abcMetric;
     }
+
+    public double getAverageFieldCount() {
+        return fieldAverageHolder.getAverage();
+    }
+
+    public double getAverageInheritanceDepth() {
+        return averageInheritanceDepthHolder.getAverage();
+    }
+
+    public double getAverageOverriddenCount() {
+        return averageOverriddenCountHolder.getAverage();
+    }
+
+    public int getMaxInheritanceDepth() {
+        return maxInheritanceDepth;
+    }
 }

analyzer/src/main/java/com/quicklybly/itmo/bytecodeanalyzer/api/StatisticMapper.java

@@ -0,0 +1,25 @@
+package com.quicklybly.itmo.bytecodeanalyzer.api;
+
+public class StatisticMapper {
+
+    private StatisticMapper() {
+        throw new IllegalStateException("Utility class");
+    }
+
+    public static String toJson(Statistic statistic) {
+        return String.format(
+                "{"
+                        + "\"fieldAverage\":%s,"
+                        + "\"averageInheritanceDepth\":%s,"
+                        + "\"averageOverriddenCountHolder\":%s,"
+                        + "\"maxInheritanceDepth\":%d,"
+                        + "\"abc\":%s"
+                        + "}",
+                statistic.getAverageFieldCount(),
+                statistic.getAverageInheritanceDepth(),
+                statistic.getAverageOverriddenCount(),
+                statistic.getMaxInheritanceDepth(),
+                statistic.getAbcMetric().getAbc()
+        );
+    }
+}

analyzer/src/main/java/com/quicklybly/itmo/bytecodeanalyzer/model/AbcMetric.java

@@ -58,4 +58,11 @@ public int hashCode() {
         result = 31 * result + Long.hashCode(condition);
         return result;
     }
+
+    @Override
+    public String toString() {
+        return "AbcMetric{" +
+                "abc=" + getAbc() +
+                '}';
+    }
 }

analyzer/src/main/java/com/quicklybly/itmo/bytecodeanalyzer/model/AverageHolder.java

@@ -15,4 +15,11 @@ public void updateAverage(Integer value) {
             count++;
         }
     }
+
+    @Override
+    public String toString() {
+        return "AverageHolder{" +
+                "average=" + getAverage() +
+                '}';
+    }
 }

example/build.gradle.kts

@@ -8,6 +8,7 @@ dependencies {
     implementation(project(":analyzer"))
 
     testImplementation(platform("org.junit:junit-bom:5.10.0"))
+    testImplementation("org.assertj:assertj-core:3.24.2")
     testImplementation("org.junit.jupiter:junit-jupiter")
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
 }

example/src/test/java/com/quicklybly/itmo/bytecodeanalizer/example/IntegrationTest.java

@@ -7,6 +7,7 @@
 import java.nio.file.Path;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
+import static org.assertj.core.api.Assertions.assertThat;
 
 public class IntegrationTest {
 
@@ -25,6 +26,11 @@ public void analyzeComplexClass() throws IOException {
         Analyzer analyzer = new Analyzer();
 
         Statistic stats = analyzer.analyzeJar(jarPath);
-        stats.printStatistic(); // todo
+
+        assertThat(stats.getMaxInheritanceDepth()).isEqualTo(4);
+        assertThat(stats.getAverageInheritanceDepth()).isEqualTo(4.0);
+        assertThat(stats.getAverageFieldCount()).isEqualTo(2.0);
+        assertThat(stats.getAverageOverriddenCount()).isEqualTo(1.0);
+        assertThat(stats.getAbcMetric().getAbc()).isBetween(9.0, 10.0);
     }
 }