Add TiltValidator

Author: eliasgruenewald

.gitignore

@@ -1,3 +1,6 @@
+.idea/
+*.iml
+
 
 # Created by https://www.toptal.com/developers/gitignore/api/java,intellij,macos,git,maven
 # Edit at https://www.toptal.com/developers/gitignore?templates=java,intellij,macos,git,maven
@@ -186,4 +189,4 @@ buildNumber.properties
 # https://github.com/takari/maven-wrapper#usage-without-binary-jar
 .mvn/wrapper/maven-wrapper.jar
 
-# End of https://www.toptal.com/developers/gitignore/api/java,intellij,macos,git,maven
+# End of https://www.toptal.com/developers/gitignore/api/java,intellij,macos,git,maven

src/main/java/TiltValidator.java

@@ -0,0 +1,49 @@
+import org.apache.commons.io.IOUtils;
+import org.everit.json.schema.Schema;
+import org.everit.json.schema.ValidationException;
+import org.everit.json.schema.loader.SchemaLoader;
+import org.json.JSONObject;
+import org.json.JSONTokener;
+
+import java.io.IOException;
+import java.net.URI;
+
+public class TiltValidator {
+
+    public static final String TILT_SCHEMA_URL = "https://raw.githubusercontent.com/Transparency-Information-Language/schema/master/tilt-schema.json";
+
+    /*
+        Returns true if document is valid according to given schema
+     */
+    public static boolean validateDocumentFromUrl(String documentUrl, String schemaUrl) {
+        try {
+            String schema_content = IOUtils.toString(URI.create(schemaUrl), "utf8");
+            JSONObject rawSchema = new JSONObject(new JSONTokener(schema_content));
+            Schema schema = SchemaLoader.load(rawSchema);
+
+            String instance_content = IOUtils.toString(URI.create(documentUrl), "utf8");
+            schema.validate(new JSONObject(instance_content));
+
+            System.out.println("Document " + documentUrl + " seems to be valid!\n");
+            return true;
+        } catch (ValidationException e) {
+            for(String s : e.getAllMessages())
+                System.out.println(s);
+            //for(Exception ex : e.getCausingExceptions())
+            //    System.out.println(ex.getMessage());
+            return false;
+        } catch (IOException e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+    /*
+        Validate by standard tilt schema
+     */
+    public static boolean validateDocumentFromUrl(String documentUrl) {
+        return validateDocumentFromUrl(documentUrl, TILT_SCHEMA_URL);
+    }
+
+
+}

src/test/java/MainTest.java

@@ -17,7 +17,7 @@
 import java.net.URI;
 import java.util.*;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.*;
 
 public class MainTest {
 
@@ -158,27 +158,16 @@ public void validateLegacy() throws Exception {
     } */
 
     @Test
-    public void validateDocument() {
-        try {
-            String schema_content = IOUtils.toString(URI.create(TILT_SCHEMA_URL), "utf8");
-            JSONObject rawSchema = new JSONObject(new JSONTokener(schema_content));
-            Schema schema = SchemaLoader.load(rawSchema);
-
-            String instance_content = IOUtils.toString(URI.create(TILT_VALID_DOCUMENT_URL), "utf8");
-            schema.validate(new JSONObject(instance_content));
-            System.out.println("Document " + TILT_VALID_DOCUMENT_URL + " seems to be valid!\n");
-
-            instance_content = IOUtils.toString(URI.create(TILT_INVALID_DOCUMENT_URL), "utf8");
-            schema.validate(new JSONObject(instance_content));
-            System.out.println("Document " + TILT_INVALID_DOCUMENT_URL + "seems to be valid!");
-        } catch (ValidationException e) {
-            for(String s : e.getAllMessages())
-                System.out.println(s);
-            //for(Exception ex : e.getCausingExceptions())
-            //    System.out.println(ex.getMessage());
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
+    public void validateDocuments() {
+        System.out.println("--- Document #1 ---");
+        boolean validationResult = TiltValidator.validateDocumentFromUrl(TILT_VALID_DOCUMENT_URL, TILT_SCHEMA_URL);
+        assertTrue(validationResult);
+    }
+
+    @Test public void validateAnotherDocument() {
+        System.out.println("--- Document #2 ---");
+        boolean validationResult = TiltValidator.validateDocumentFromUrl(TILT_INVALID_DOCUMENT_URL);
+        assertFalse(validationResult);
     }
 }