Add tests for MobSkillFactory

src/test/java/server/life/MobSkillFactoryTest.java

@@ -0,0 +1,70 @@
+package server.life;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+import org.mockito.MockitoAnnotations;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class MobSkillFactoryTest {
+
+    @TempDir
+    private Path wzPath;
+
+    @BeforeEach
+    void setWzPath() {
+        MockitoAnnotations.openMocks(this);
+        writeTestFileToTempDir();
+        System.setProperty("wz-path", "%s/wz".formatted(wzPath.toString()));
+    }
+
+    private void writeTestFileToTempDir() {
+        try {
+            String testFileContents = readTestFileContents();
+            writeTempDirFile(testFileContents);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private String readTestFileContents() throws IOException {
+        return new String(getClass()
+                .getClassLoader()
+                .getResourceAsStream("MobSkill-test.img.xml")
+                .readAllBytes()
+        );
+    }
+
+    private void writeTempDirFile(String fileContents) throws IOException {
+        Path tempDirDirectory = wzPath.resolve("wz/Skill.wz");
+        Files.createDirectories(tempDirDirectory);
+        Path tempDirFile = Files.createFile(tempDirDirectory.resolve("MobSkill.img.xml"));
+        Files.writeString(tempDirFile, fileContents);
+    }
+
+    @Test
+    void shouldLoadExistingMobSkill() {
+        MobSkill mobSkill = MobSkillFactory.getMobSkill(MobSkillType.ATTACK_UP, 1);
+
+        assertNotNull(mobSkill);
+        assertAll("MobSkill",
+                () -> assertEquals(115, mobSkill.getX()),
+                () -> assertEquals(5, mobSkill.getMpCon()),
+                () -> assertEquals(40_000, mobSkill.getCoolTime()),
+                () -> assertEquals(30_000, mobSkill.getDuration())
+        );
+    }
+
+    @Test
+    void shouldReturnNullForNonExistingMobSkill() {
+        MobSkill mobSkill = MobSkillFactory.getMobSkill(MobSkillType.DEFENSE_UP, 1);
+
+        assertNull(mobSkill);
+    }
+
+}