Create DetectedLanguageTest.java

src/test/java/com/github/brenoepics/at4j/data/DetectedLanguageTest.java

@@ -0,0 +1,58 @@
+package com.github.brenoepics.at4j.data;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class DetectedLanguageTest {
+
+		@Test
+		void ofJSON_withValidJson_returnsDetectedLanguage() throws JsonProcessingException {
+				String json = "{\"language\":\"en\",\"score\":0.9,\"isTranslationSupported\":true,\"isTransliterationSupported\":false}";
+				ObjectMapper mapper = new ObjectMapper();
+				ObjectNode jsonNode  = mapper.convertValue(mapper.readTree(json), ObjectNode.class);
+
+				DetectedLanguage detectedLanguage = DetectedLanguage.ofJSON(jsonNode);
+
+				assertEquals("en", detectedLanguage.getLanguageCode());
+				assertEquals(0.9, detectedLanguage.getScore(), 0.0001);
+				assertTrue(detectedLanguage.isTranslationSupported());
+				assertFalse(detectedLanguage.isTransliterationSupported());
+		}
+
+		@Test
+		void ofJSON_withMissingFields_returnsDetectedLanguageWithDefaults() throws JsonProcessingException {
+				String json = "{\"language\":\"en\",\"score\":0.9}";
+				ObjectMapper mapper = new ObjectMapper();
+				ObjectNode jsonNode = mapper.convertValue(mapper.readTree(json), ObjectNode.class);
+
+				DetectedLanguage detectedLanguage = DetectedLanguage.ofJSON(jsonNode);
+
+				assertEquals("en", detectedLanguage.getLanguageCode());
+				assertEquals(0.9, detectedLanguage.getScore(), 0.0001);
+				assertFalse(detectedLanguage.isTranslationSupported());
+				assertFalse(detectedLanguage.isTransliterationSupported());
+		}
+
+		@Test
+		void ofJSON_withInvalidJson_returnsNull() throws JsonProcessingException {
+				String json = "{\"invalid\":\"json\"}";
+				ObjectMapper mapper = new ObjectMapper();
+				ObjectNode jsonNode = mapper.convertValue(mapper.readTree(json), ObjectNode.class);
+
+				DetectedLanguage detectedLanguage = DetectedLanguage.ofJSON(jsonNode);
+
+				assertNull(detectedLanguage);
+		}
+
+		@Test
+		void toString_returnsCorrectFormat() {
+				DetectedLanguage detectedLanguage = new DetectedLanguage("en", 0.9f, true, false);
+
+				String expected = "DetectedLanguage{language='en', score=0.9, isTranslationSupported=true, isTransliterationSupported=false}";
+				assertEquals(expected, detectedLanguage.toString());
+		}
+}