1 files changed, 35 insertions, 0 deletions

diff --git a/test/uk/ac/ox/cs/pagoda/global_tests/CheckAnswers.java b/test/uk/ac/ox/cs/pagoda/global_tests/CheckAnswers.java
new file mode 100644
index 0000000..14050ce
--- /dev/null
+++ b/test/uk/ac/ox/cs/pagoda/global_tests/CheckAnswers.java
@@ -0,0 +1,35 @@
+package uk.ac.ox.cs.pagoda.global_tests;
+
+import com.google.gson.Gson;
+import com.google.gson.reflect.TypeToken;
+import org.testng.Assert;
+import uk.ac.ox.cs.pagoda.query.QueryRecord;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.lang.reflect.Type;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Set;
+
+/**
+ * It provides auxiliary methods for checking answers.
+ * */
+public class CheckAnswers {
+
+    private CheckAnswers() {
+    }
+
+    public static void assertSameAnswers(Path computedAnswersFile, Path givenAnswersFile) throws IOException {
+        BufferedReader computedReader = Files.newBufferedReader(computedAnswersFile);
+        BufferedReader givenReader = Files.newBufferedReader(givenAnswersFile);
+
+        Gson gson = QueryRecord.GsonCreator.getInstance();
+
+        Type cqType = new TypeToken<Set<QueryRecord>>() {}.getType();
+        Set<QueryRecord> computedAnswers = gson.fromJson(computedReader, cqType);
+        Set<QueryRecord> givenAnswers = gson.fromJson(givenReader, cqType);
+
+        Assert.assertEquals(computedAnswers, givenAnswers);
+    }
+}