simplify Junit parametrizable (closes #13)

src/test/java/org/greenbytes/http/sfv/AbstractSpecificationTests.java

@@ -34,6 +34,11 @@ public static class TestParams {
         public JsonValue expected_value;
         public JsonValue expected_params;
         public String canonical;
+
+        // provides the test name to Junit runner
+        @Override public String toString() {
+            return filename + ":" + name;
+        }
     }
 
     public static Collection<Object[]> makeParameters(String... filenames) {
@@ -51,7 +56,7 @@ private static Collection<Object[]> internalMakeParameters(String filename) {
         JsonReader reader = Json.createReader(AbstractSpecificationTests.class.getClassLoader().getResourceAsStream(filename));
         for (JsonValue vt : reader.readArray()) {
             TestParams p = makeOneTest(basename, vt);
-            result.add(new Object[] { basename + ": " + p.name, p });
+            result.add(new Object[] { p });
         }
 
         return result;

src/test/java/org/greenbytes/http/sfv/SpecificationBinaryTests.java

@@ -0,0 +1,4 @@
+package org.greenbytes.http.sfv;
+
+public class SpecificationBinaryTests {
+}

src/test/java/org/greenbytes/http/sfv/SpecificationTests.java

@@ -41,8 +41,8 @@ public static Collection<Object[]> parameters() {
                 "param-listlist.json", "string.json", "string-generated.json", "token.json", "token-generated.json");
     }
 
-    public SpecificationTests(Object x, Object y) {
-        this.p = (TestParams) y;
+    public SpecificationTests(TestParams params) {
+        this.p = params;
     }
 
     @Test