diff --git a/src/test/java/de/ids_mannheim/korap/query/TestFrameConstraint.java b/src/test/java/de/ids_mannheim/korap/query/TestFrameConstraint.java
index ed5c41d..729f5c9 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestFrameConstraint.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestFrameConstraint.java
@@ -1,18 +1,17 @@
 package de.ids_mannheim.korap.query;
 
+import static org.junit.Assert.assertEquals;
+
 import java.io.IOException;
 import java.util.Collection;
 
-import de.ids_mannheim.korap.query.FrameConstraint;
-import de.ids_mannheim.korap.util.QueryException;
 import org.apache.lucene.search.spans.Spans;
-
-import static org.junit.Assert.*;
 import org.junit.Test;
-import org.junit.Ignore;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
+import de.ids_mannheim.korap.util.QueryException;
+
 /**
  * @author diewald
  */
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestKrillQuery.java b/src/test/java/de/ids_mannheim/korap/query/TestKrillQuery.java
index 6d4ed84..7348014 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestKrillQuery.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestKrillQuery.java
@@ -1,19 +1,17 @@
 package de.ids_mannheim.korap.query;
 
-import java.util.*;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
 import org.apache.lucene.search.spans.SpanQuery;
-import de.ids_mannheim.korap.KrillQuery;
-import de.ids_mannheim.korap.query.QueryBuilder;
-import de.ids_mannheim.korap.query.wrap.SpanQueryWrapper;
-
-import de.ids_mannheim.korap.util.QueryException;
-
-import static org.junit.Assert.*;
 import org.junit.Test;
-import org.junit.Ignore;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
+import de.ids_mannheim.korap.query.wrap.SpanQueryWrapper;
+import de.ids_mannheim.korap.util.QueryException;
+
 
 /**
  * @author diewald
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestKrillQueryJSON.java b/src/test/java/de/ids_mannheim/korap/query/TestKrillQueryJSON.java
index 47a43eb..fc9574d 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestKrillQueryJSON.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestKrillQueryJSON.java
@@ -1,22 +1,19 @@
 package de.ids_mannheim.korap.query;
 
-import java.util.*;
-import java.io.*;
-import static de.ids_mannheim.korap.TestSimple.*;
+import static de.ids_mannheim.korap.TestSimple.getJsonQuery;
+import static de.ids_mannheim.korap.TestSimple.getJsonString;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
-import org.apache.lucene.search.spans.SpanQuery;
-import de.ids_mannheim.korap.query.wrap.SpanQueryWrapper;
-
-import de.ids_mannheim.korap.KrillQuery;
-import de.ids_mannheim.korap.query.QueryBuilder;
-import de.ids_mannheim.korap.util.QueryException;
-
-import static org.junit.Assert.*;
 import org.junit.Test;
-import org.junit.Ignore;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
+import de.ids_mannheim.korap.KrillQuery;
+import de.ids_mannheim.korap.query.wrap.SpanQueryWrapper;
+import de.ids_mannheim.korap.util.QueryException;
+
 @RunWith(JUnit4.class)
 public class TestKrillQueryJSON {
 
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestSpanAlterQuery.java b/src/test/java/de/ids_mannheim/korap/query/TestSpanAlterQuery.java
index b259fb8..a1e5dd8 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestSpanAlterQuery.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestSpanAlterQuery.java
@@ -1,18 +1,16 @@
 package de.ids_mannheim.korap.query;
 
-import java.util.*;
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
 import de.ids_mannheim.korap.query.wrap.SpanAlterQueryWrapper;
 import de.ids_mannheim.korap.query.wrap.SpanRegexQueryWrapper;
 import de.ids_mannheim.korap.query.wrap.SpanSegmentQueryWrapper;
-
 import de.ids_mannheim.korap.util.QueryException;
 
-import static org.junit.Assert.*;
-import org.junit.Test;
-import org.junit.Ignore;
-import org.junit.runner.RunWith;
-import org.junit.runners.JUnit4;
-
 @RunWith(JUnit4.class)
 public class TestSpanAlterQuery {
     @Test
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestSpanElementQuery.java b/src/test/java/de/ids_mannheim/korap/query/TestSpanElementQuery.java
index de50d78..08eac87 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestSpanElementQuery.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestSpanElementQuery.java
@@ -1,13 +1,8 @@
 package de.ids_mannheim.korap.query;
 
-import java.util.*;
-import org.apache.lucene.index.Term;
+import static org.junit.Assert.assertEquals;
 
-import de.ids_mannheim.korap.query.SpanElementQuery;
-
-import static org.junit.Assert.*;
 import org.junit.Test;
-import org.junit.Ignore;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestSpanSegmentAlterQuery.java b/src/test/java/de/ids_mannheim/korap/query/TestSpanSegmentAlterQuery.java
index f509acb..8e568d8 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestSpanSegmentAlterQuery.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestSpanSegmentAlterQuery.java
@@ -1,18 +1,16 @@
 package de.ids_mannheim.korap.query;
 
-import java.util.*;
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
 import de.ids_mannheim.korap.query.wrap.SpanAlterQueryWrapper;
 import de.ids_mannheim.korap.query.wrap.SpanRegexQueryWrapper;
 import de.ids_mannheim.korap.query.wrap.SpanSegmentQueryWrapper;
-
 import de.ids_mannheim.korap.util.QueryException;
 
-import static org.junit.Assert.*;
-import org.junit.Test;
-import org.junit.Ignore;
-import org.junit.runner.RunWith;
-import org.junit.runners.JUnit4;
-
 @RunWith(JUnit4.class)
 public class TestSpanSegmentAlterQuery {
     @Test
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestSpanSegmentQuery.java b/src/test/java/de/ids_mannheim/korap/query/TestSpanSegmentQuery.java
index 791af7c..c5ac4a5 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestSpanSegmentQuery.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestSpanSegmentQuery.java
@@ -1,18 +1,17 @@
 package de.ids_mannheim.korap.query;
 
-import java.util.*;
-import de.ids_mannheim.korap.query.wrap.SpanSegmentQueryWrapper;
-import de.ids_mannheim.korap.query.wrap.SpanRegexQueryWrapper;
-import de.ids_mannheim.korap.query.wrap.SpanAlterQueryWrapper;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 
-import de.ids_mannheim.korap.util.QueryException;
-
-import static org.junit.Assert.*;
 import org.junit.Test;
-import org.junit.Ignore;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
+import de.ids_mannheim.korap.query.wrap.SpanAlterQueryWrapper;
+import de.ids_mannheim.korap.query.wrap.SpanRegexQueryWrapper;
+import de.ids_mannheim.korap.query.wrap.SpanSegmentQueryWrapper;
+import de.ids_mannheim.korap.util.QueryException;
+
 @RunWith(JUnit4.class)
 public class TestSpanSegmentQuery {
     @Test
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestSpanSegmentSequenceQuery.java b/src/test/java/de/ids_mannheim/korap/query/TestSpanSegmentSequenceQuery.java
index 5230ed0..5e7ed91 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestSpanSegmentSequenceQuery.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestSpanSegmentSequenceQuery.java
@@ -1,19 +1,17 @@
 package de.ids_mannheim.korap.query;
 
-import java.util.*;
-import de.ids_mannheim.korap.query.wrap.SpanSegmentQueryWrapper;
-import de.ids_mannheim.korap.query.wrap.SpanRegexQueryWrapper;
-import de.ids_mannheim.korap.query.wrap.SpanAlterQueryWrapper;
-import de.ids_mannheim.korap.query.wrap.SpanSequenceQueryWrapper;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 
-import de.ids_mannheim.korap.util.QueryException;
-
-import static org.junit.Assert.*;
 import org.junit.Test;
-import org.junit.Ignore;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
+import de.ids_mannheim.korap.query.wrap.SpanRegexQueryWrapper;
+import de.ids_mannheim.korap.query.wrap.SpanSegmentQueryWrapper;
+import de.ids_mannheim.korap.query.wrap.SpanSequenceQueryWrapper;
+import de.ids_mannheim.korap.util.QueryException;
+
 @RunWith(JUnit4.class)
 public class TestSpanSegmentSequenceQuery {
 
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestSpanSequenceQuery.java b/src/test/java/de/ids_mannheim/korap/query/TestSpanSequenceQuery.java
index b55b360..9117f4a 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestSpanSequenceQuery.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestSpanSequenceQuery.java
@@ -1,19 +1,20 @@
 package de.ids_mannheim.korap.query;
 
-import java.util.*;
-import de.ids_mannheim.korap.query.wrap.SpanSequenceQueryWrapper;
-import de.ids_mannheim.korap.query.wrap.SpanClassQueryWrapper;
-import de.ids_mannheim.korap.query.wrap.SpanElementQueryWrapper;
-import de.ids_mannheim.korap.query.wrap.SpanRepetitionQueryWrapper;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
-import de.ids_mannheim.korap.util.QueryException;
-
-import static org.junit.Assert.*;
 import org.junit.Test;
-import org.junit.Ignore;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
+import de.ids_mannheim.korap.query.wrap.SpanClassQueryWrapper;
+import de.ids_mannheim.korap.query.wrap.SpanRepetitionQueryWrapper;
+import de.ids_mannheim.korap.query.wrap.SpanSequenceQueryWrapper;
+import de.ids_mannheim.korap.util.QueryException;
+
 
 /**
  * @author margaretha, diewald
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestSpanWithinQuery.java b/src/test/java/de/ids_mannheim/korap/query/TestSpanWithinQuery.java
index 829167f..3156874 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestSpanWithinQuery.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestSpanWithinQuery.java
@@ -1,20 +1,15 @@
 package de.ids_mannheim.korap.query;
 
-import java.util.*;
-import de.ids_mannheim.korap.query.wrap.SpanSequenceQueryWrapper;
-import de.ids_mannheim.korap.query.SpanWithinQuery;
-import de.ids_mannheim.korap.query.SpanElementQuery;
-import de.ids_mannheim.korap.query.QueryBuilder;
+import static org.junit.Assert.assertEquals;
 
 import org.apache.lucene.search.spans.SpanQuery;
-import de.ids_mannheim.korap.util.QueryException;
-
-import static org.junit.Assert.*;
 import org.junit.Test;
-import org.junit.Ignore;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
+import de.ids_mannheim.korap.query.wrap.SpanSequenceQueryWrapper;
+import de.ids_mannheim.korap.util.QueryException;
+
 @RunWith(JUnit4.class)
 public class TestSpanWithinQuery {
     @Test
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestTemporaryQueryLimitations.java b/src/test/java/de/ids_mannheim/korap/query/TestTemporaryQueryLimitations.java
index 98dffee..921e8db 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestTemporaryQueryLimitations.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestTemporaryQueryLimitations.java
@@ -1,27 +1,20 @@
 package de.ids_mannheim.korap.query;
 
-import java.util.*;
+import static de.ids_mannheim.korap.TestSimple.getJsonString;
+import static org.junit.Assert.assertEquals;
+
 import java.io.IOException;
 
-import org.apache.lucene.search.spans.SpanQuery;
-
-import de.ids_mannheim.korap.KrillIndex;
-import de.ids_mannheim.korap.KrillQuery;
-import de.ids_mannheim.korap.response.Result;
-import de.ids_mannheim.korap.Krill;
-import de.ids_mannheim.korap.response.Match;
-import de.ids_mannheim.korap.index.FieldDocument;
-
-import de.ids_mannheim.korap.util.QueryException;
-
-import static de.ids_mannheim.korap.TestSimple.*;
-
-import static org.junit.Assert.*;
 import org.junit.Test;
-import org.junit.Ignore;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
+import de.ids_mannheim.korap.Krill;
+import de.ids_mannheim.korap.KrillIndex;
+import de.ids_mannheim.korap.index.FieldDocument;
+import de.ids_mannheim.korap.response.Result;
+import de.ids_mannheim.korap.util.QueryException;
+
 /**
  * These tests are meant to fail in a predictable way - but they
  * describe