4 files changed, 25 insertions, 10 deletions
diff --git a/java/src/test/java/org/pablotron/luigi/tests/CacheTest.java b/java/src/test/java/org/pablotron/luigi/tests/CacheTest.java
index f0e2ab5..f59d2b8 100644
--- a/java/src/test/java/org/pablotron/luigi/tests/CacheTest.java
+++ b/java/src/test/java/org/pablotron/luigi/tests/CacheTest.java
@@ -2,6 +2,7 @@ package org.pablotron.luigi.tests;
 
 import java.util.Map;
 import java.util.HashMap;
+import java.io.IOException;
 
 import org.pablotron.luigi.Template;
 import org.pablotron.luigi.Filter;
@@ -31,20 +32,20 @@ public final class CacheTest {
   }};
 
   @Test
-  public void testCache() throws LuigiError {
+  public void testCache() throws LuigiError, IOException {
     final Cache cache = new Cache(TEST_TEMPLATES);
 
     assertEquals("foofoofoo", cache.run("foo", TEST_ARGS));
   }
 
   @Test
-  public void testCacheWithCustomFilters() throws LuigiError {
+  public void testCacheWithCustomFilters() throws LuigiError, IOException {
     final Cache cache = new Cache(TEST_TEMPLATES, TEST_FILTERS);
     assertEquals("foo-custom-foo-filter-foo", cache.run("foo-custom", TEST_ARGS));
   }
 
   @Test
-  public void testCacheGetWithResultHandler() throws LuigiError {
+  public void testCacheGetWithResultHandler() throws LuigiError, IOException {
     final Cache cache = new Cache(TEST_TEMPLATES);
     final StringBuilder sb = new StringBuilder();
     final TestResultHandler rh = new TestResultHandler(sb);
diff --git a/java/src/test/java/org/pablotron/luigi/tests/FiltersTest.java b/java/src/test/java/org/pablotron/luigi/tests/FiltersTest.java
index 4800318..25034b0 100644
--- a/java/src/test/java/org/pablotron/luigi/tests/FiltersTest.java
+++ b/java/src/test/java/org/pablotron/luigi/tests/FiltersTest.java
@@ -5,7 +5,6 @@ import org.pablotron.luigi.Template;
 import org.pablotron.luigi.Filter;
 import org.pablotron.luigi.errors.LuigiError;
 import org.pablotron.luigi.errors.FilterError;
-import org.pablotron.luigi.ResultHandler;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import org.junit.jupiter.api.Test;
diff --git a/java/src/test/java/org/pablotron/luigi/tests/TemplateTest.java b/java/src/test/java/org/pablotron/luigi/tests/TemplateTest.java
index 83a137d..9862ae1 100644
--- a/java/src/test/java/org/pablotron/luigi/tests/TemplateTest.java
+++ b/java/src/test/java/org/pablotron/luigi/tests/TemplateTest.java
@@ -2,10 +2,10 @@ package org.pablotron.luigi.tests;
 
 import java.util.Map;
 import java.util.HashMap;
+import java.io.IOException;
 
 import org.pablotron.luigi.Template;
 import org.pablotron.luigi.errors.LuigiError;
-import org.pablotron.luigi.ResultHandler;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
@@ -44,7 +44,7 @@ public final class TemplateTest {
   }
 
   @Test
-  public void testResultHandler() throws LuigiError {
+  public void testResultHandler() throws LuigiError, IOException {
     final Template t = new Template("foo%{bar}");
     final StringBuilder sb = new StringBuilder();
     final TestResultHandler rh = new TestResultHandler(sb);
@@ -56,7 +56,7 @@ public final class TemplateTest {
   }
 
   @Test
-  public void testStaticResultHandler() throws LuigiError {
+  public void testStaticResultHandler() throws LuigiError, IOException {
     final StringBuilder sb = new StringBuilder();
     final TestResultHandler rh = new TestResultHandler(sb);
 
diff --git a/java/src/test/java/org/pablotron/luigi/tests/TestResultHandler.java b/java/src/test/java/org/pablotron/luigi/tests/TestResultHandler.java
index a847e79..d924cff 100644
--- a/java/src/test/java/org/pablotron/luigi/tests/TestResultHandler.java
+++ b/java/src/test/java/org/pablotron/luigi/tests/TestResultHandler.java
@@ -1,15 +1,30 @@
 package org.pablotron.luigi.tests;
 
-import org.pablotron.luigi.ResultHandler;
+import java.io.IOException;
 
-public final class TestResultHandler implements ResultHandler {
+public final class TestResultHandler implements Appendable {
   private final StringBuilder sb;
 
   public TestResultHandler(final StringBuilder sb) {
     this.sb = sb;
   }
 
-  public void append(final String s) {
+  public Appendable append(final char c) throws IOException {
+    sb.append(c);
+		return this;
+  }
+
+  public Appendable append(final CharSequence s) throws IOException {
     sb.append(s);
+		return this;
+  }
+
+  public Appendable append(
+    final CharSequence s,
+    final int start,
+    final int end
+  ) throws IOException {
+    sb.append(s, start, end);
+		return this;
   }
 };