Support for AARCH64 architecture on Linux (#279)

Fixes #278

Author: musketyr

src/main/java/io/specto/hoverfly/junit/core/SystemConfigFactory.java

@@ -36,7 +36,11 @@ SystemConfig createSystemConfig() {
         }
 
         if (systemInfo.is64BitSystem()) {
-            archType = ArchType.ARCH_AMD64;
+            if (systemInfo.isOsLinux() && systemInfo.isArmArchitecture()) {
+                archType = ArchType.ARCH_ARM64;
+            } else {
+                archType = ArchType.ARCH_AMD64;
+            }
         } else {
             archType = ArchType.ARCH_386;
         }
@@ -66,6 +70,7 @@ String getName() {
 
     enum ArchType {
         ARCH_AMD64("amd64"),
+        ARCH_ARM64("arm64"),
         ARCH_386("386");
 
         private final String name;

src/main/java/io/specto/hoverfly/junit/core/SystemInfo.java

@@ -11,6 +11,7 @@ class SystemInfo {
     private final boolean isOsMac = SystemUtils.IS_OS_MAC;
     private final boolean isOsLinux = SystemUtils.IS_OS_LINUX;
     private final boolean is64BitSystem = SystemUtils.OS_ARCH.contains("64");
+    private final boolean isArmArchitecture = SystemUtils.OS_ARCH.contains("aarch");
     private final String osName = SystemUtils.OS_NAME;
 
     boolean isOsWindows() {
@@ -29,6 +30,10 @@ boolean is64BitSystem() {
         return is64BitSystem;
     }
 
+    boolean isArmArchitecture() {
+        return isArmArchitecture;
+    }
+
     String getOsName() {
         return osName;
     }

src/test/java/io/specto/hoverfly/junit/core/SystemConfigFactoryTest.java

@@ -6,8 +6,7 @@
 import org.junit.Test;
 import org.powermock.reflect.Whitebox;
 
-import static io.specto.hoverfly.junit.core.SystemConfigFactory.ArchType.ARCH_386;
-import static io.specto.hoverfly.junit.core.SystemConfigFactory.ArchType.ARCH_AMD64;
+import static io.specto.hoverfly.junit.core.SystemConfigFactory.ArchType.*;
 import static io.specto.hoverfly.junit.core.SystemConfigFactory.OsName.*;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.catchThrowable;
@@ -46,6 +45,18 @@ public void shouldCreateSystemConfigForLinux() {
         assertThat(systemConfig.getOsName()).isEqualTo(LINUX);
     }
 
+    @Test
+    public void shouldCreateSystemConfigWithArm64BitArchType() {
+
+        when(systemInfo.isOsLinux()).thenReturn(true);
+        when(systemInfo.is64BitSystem()).thenReturn(true);
+        when(systemInfo.isArmArchitecture()).thenReturn(true);
+
+        SystemConfig systemConfig = factory.createSystemConfig();
+
+        assertThat(systemConfig.getArchType()).isEqualTo(ARCH_ARM64);
+    }
+
     @Test
     public void shouldCreateSystemConfigForMac() {