rest tests
diff --git a/src/test/java/FoundryRewriteTest.java b/src/test/java/FoundryRewriteTest.java
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+++ b/src/test/java/FoundryRewriteTest.java
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+import com.fasterxml.jackson.databind.JsonNode;
+import de.ids_mannheim.korap.config.BeanConfiguration;
+import de.ids_mannheim.korap.config.KustvaktConfiguration;
+import de.ids_mannheim.korap.query.serialize.QuerySerializer;
+import de.ids_mannheim.korap.resource.LayerMapper;
+import de.ids_mannheim.korap.resource.RewriteProcessor;
+import de.ids_mannheim.korap.resource.rewrite.CollectionCleanupFilter;
+import de.ids_mannheim.korap.resource.rewrite.CollectionConstraint;
+import de.ids_mannheim.korap.resource.rewrite.FoundryInject;
+import de.ids_mannheim.korap.resource.rewrite.RewriteHandler;
+import de.ids_mannheim.korap.utils.JsonUtils;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+/**
+ * @author hanl
+ * @date 18/06/2015
+ */
+//todo: refactor and structure tests
+public class FoundryRewriteTest {
+
+    private static String simple_add_query = "[pos=ADJA]";
+    private static String simple_rewrite_query = "[base=Haus]";
+    private static String complex_rewrite_query = "<c=INFC>";
+    private static String complex_rewrite_query2 = "[orth=laufe/i & base!=Lauf]";
+    private static String complex_rewrite_query3 = "[(base=laufen | base=gehen) & tt/pos=VVFIN]";
+
+    private static KustvaktConfiguration config;
+
+    @BeforeClass
+    public static void init() {
+        BeanConfiguration.loadClasspathContext();
+        config = BeanConfiguration.getBeans().getConfiguration();
+    }
+
+    @Test
+    public void testSimpleFoundryAddThrowsNoError() {
+        RewriteProcessor processor = new RewriteProcessor(config);
+        QuerySerializer s = new QuerySerializer();
+        s.setQuery(simple_add_query, "poliqarp");
+        String result = processor.process(s.toJSON());
+        JsonNode node = JsonUtils.readTree(result);
+
+        assert node != null;
+        assert !node.at("/query/wrap/foundry").isMissingNode();
+    }
+
+    @Test
+    public void testDefaultLayerMapperThrowsNoException() {
+        LayerMapper m = new LayerMapper(config);
+
+        assert m.findFoundry("lemma").equals(config.getDefault_lemma());
+        assert m.findFoundry("pos").equals(config.getDefault_pos());
+        assert m.findFoundry("surface").equals(config.getDefault_surface());
+        assert m.findFoundry("d").equals(config.getDefault_dep());
+        assert m.findFoundry("c").equals(config.getDefault_const());
+    }
+
+    @Test
+    public void testFoundryInjectPosNoErrors() {
+        QuerySerializer s = new QuerySerializer();
+        RewriteHandler handler = new RewriteHandler();
+        s.setQuery("[pos=ADJA]", "poliqarp");
+        handler.add(new FoundryInject(config));
+        String result = handler.apply(s.toJSON(), null);
+        JsonNode node = JsonUtils.readTree(result);
+
+        assert node != null;
+        assert !node.at("/query/wrap/foundry").isMissingNode();
+        assert !node.at("/query/wrap/rewrites").isMissingNode();
+        assert node.at("/query/wrap/rewrites/0/@type").asText()
+                .equals("koral:rewrite");
+    }
+
+    @Test
+    public void testFoundryInjectJoinedQueryNoErrors() {
+        QuerySerializer s = new QuerySerializer();
+        RewriteHandler handler = new RewriteHandler();
+        s.setQuery("[orth=laufe/i & base!=Lauf]", "poliqarp");
+        handler.add(new FoundryInject(config));
+        String result = handler.apply(s.toJSON(), null);
+        JsonNode node = JsonUtils.readTree(result);
+
+        assert node != null;
+        assert node.at("/query/wrap/@type").asText().equals("koral:termGroup");
+        assert !node.at("/query/wrap/operands/0/foundry").isMissingNode();
+        assert !node.at("/query/wrap/operands/0/rewrites").isMissingNode();
+        assert !node.at("/query/wrap/operands/1/foundry").isMissingNode();
+        assert !node.at("/query/wrap/operands/1/rewrites").isMissingNode();
+    }
+
+    @Test
+    public void testFoundryInjectGroupedQueryNoErrors() {
+        QuerySerializer s = new QuerySerializer();
+        RewriteHandler handler = new RewriteHandler();
+        s.setQuery("[(base=laufen | base=gehen) & tt/pos=VVFIN]", "poliqarp");
+        handler.add(new FoundryInject(config));
+        String result = handler.apply(s.toJSON(), null);
+        JsonNode node = JsonUtils.readTree(result);
+
+        assert node != null;
+        assert node.at("/query/wrap/@type").asText().equals("koral:termGroup");
+        assert !node.at("/query/wrap/operands/0/operands/0/foundry")
+                .isMissingNode();
+        assert !node.at("/query/wrap/operands/0/operands/0/rewrites")
+                .isMissingNode();
+        assert !node.at("/query/wrap/operands/0/operands/1/foundry")
+                .isMissingNode();
+        assert !node.at("/query/wrap/operands/0/operands/1/rewrites")
+                .isMissingNode();
+
+        assert !node.at("/query/wrap/operands/1/foundry").isMissingNode();
+        assert node.at("/query/wrap/operands/1/rewrites").isMissingNode();
+    }
+
+    @Test
+    public void testCollectionNodeRemoveCorpusIdNoErrors() {
+        RewriteHandler handler = new RewriteHandler();
+        handler.add(new CollectionConstraint());
+        QuerySerializer s = new QuerySerializer();
+        s.setQuery(simple_add_query, "poliqarp");
+        s.setCollection("textClass=politik & corpusID=WPD");
+        String result = s.toJSON();
+        JsonNode node = JsonUtils.readTree(handler.apply(result, null));
+        assert node != null;
+        assert node.at("/collection/operands").size() == 1;
+    }
+
+    @Test
+    public void testCollectionNodeRemoveAllCorpusIdNoErrors() {
+        RewriteHandler handler = new RewriteHandler();
+        handler.add(new CollectionConstraint());
+        QuerySerializer s = new QuerySerializer();
+        s.setQuery(simple_add_query, "poliqarp");
+        s.setCollection("corpusID=BRZ13 & corpusID=WPD");
+        String result = s.toJSON();
+        JsonNode node = JsonUtils.readTree(handler.apply(result, null));
+
+        assert node != null;
+        assert node.at("/collection/operands").size() == 0;
+    }
+
+    @Test
+    public void testCollectionNodeRemoveGroupedCorpusIdNoErrors() {
+        RewriteHandler handler = new RewriteHandler();
+        handler.add(new CollectionConstraint());
+        QuerySerializer s = new QuerySerializer();
+        s.setQuery(simple_add_query, "poliqarp");
+        s.setCollection(
+                "(corpusID=BRZ13 & textClass=Wissenschaft) & corpusID=WPD");
+        String result = s.toJSON();
+        JsonNode node = JsonUtils.readTree(handler.apply(result, null));
+
+        assert node != null;
+        assert node.at("/collection/operands/0/@type").asText()
+                .equals("koral:docGroup");
+        assert node.at("/collection/operands/0/operands/0/key").asText()
+                .equals("textClass");
+    }
+
+    //fixme: will probably fail when one doc groups are being refactored
+    @Test
+    public void testCollectionCleanEmptyDocGroupNoErrors() {
+        RewriteHandler handler = new RewriteHandler();
+        handler.add(new CollectionConstraint());
+        handler.add(new CollectionCleanupFilter());
+        QuerySerializer s = new QuerySerializer();
+        s.setQuery(simple_add_query, "poliqarp");
+        s.setCollection(
+                "(corpusID=BRZ13 & corpusID=WPD) & textClass=Wissenschaft & textClass=Sport");
+        String result = s.toJSON();
+        JsonNode node = JsonUtils.readTree(handler.apply(result, null));
+        assert node != null;
+        assert node.at("/collection/@type").asText().equals("koral:docGroup");
+        assert node.at("/collection/operands").size() == 2;
+        assert node.at("/collection/operands/0/key").asText()
+                .equals("textClass");
+        assert node.at("/collection/operands/1/key").asText()
+                .equals("textClass");
+    }
+
+    @Test
+    public void testCollectionCleanMoveOneDocFromGroupUpNoErrors() {
+        RewriteHandler handler = new RewriteHandler();
+        handler.add(new CollectionConstraint());
+        handler.add(new CollectionCleanupFilter());
+        QuerySerializer s = new QuerySerializer();
+        s.setQuery(simple_add_query, "poliqarp");
+        s.setCollection("(corpusID=BRZ13 & textClass=Wissenschaft)");
+        String result = s.toJSON();
+        JsonNode node = JsonUtils.readTree(handler.apply(result, null));
+        assert node != null;
+        assert node.at("/collection/@type").asText().equals("koral:doc");
+    }
+
+    @Test
+    public void testCollectionCleanEmptyGroupAndMoveOneDocFromGroupUpNoErrors() {
+        RewriteHandler handler = new RewriteHandler();
+        handler.add(new CollectionConstraint());
+        handler.add(new CollectionCleanupFilter());
+        QuerySerializer s = new QuerySerializer();
+        s.setQuery(simple_add_query, "poliqarp");
+        s.setCollection(
+                "(corpusID=BRZ13 & corpusID=WPD) & textClass=Wissenschaft");
+        String result = s.toJSON();
+        JsonNode node = JsonUtils.readTree(handler.apply(result, null));
+        assert node != null;
+        assert node.at("/collection/@type").asText().equals("koral:doc");
+        assert node.at("/collection/key").asText().equals("textClass");
+    }
+
+}