Add serialization tests for ListFacet

main/src/com/google/refine/browsing/facets/ListFacet.java

@@ -214,6 +214,7 @@ public class ListFacet implements Facet {
     }
         
     public void initializeFromConfig(ListFacetConfig config, Project project) {
+        _config = config;
         if (_config.columnName.length() > 0) {
             Column column = project.columnModel.getColumnByName(_config.columnName);
             if (column != null) {

main/tests/server/src/com/google/refine/tests/browsing/facets/ListFacetTests.java

@@ -0,0 +1,80 @@
+package com.google.refine.tests.browsing.facets;
+
+import org.json.JSONObject;
+import org.testng.annotations.Test;
+
+import com.google.refine.browsing.Engine;
+import com.google.refine.browsing.facets.Facet;
+import com.google.refine.browsing.facets.ListFacet.ListFacetConfig;
+import com.google.refine.model.Project;
+import com.google.refine.tests.RefineTest;
+import com.google.refine.tests.util.TestUtils;
+
+public class ListFacetTests extends RefineTest {
+    
+    private static String jsonConfig = "{"
+            + "\"type\":\"list\","
+            + "\"name\":\"facet A\","
+            + "\"columnName\":\"Column A\","
+            + "\"expression\":\"value+\\\"bar\\\"\","
+            + "\"omitBlank\":false,"
+            + "\"omitError\":false,"
+            + "\"selection\":[{\"v\":{\"v\":\"foobar\",\"l\":\"true\"}}],"
+            + "\"selectBlank\":false,"
+            + "\"selectError\":false,"
+            + "\"invert\":false"
+            + "}";
+    
+    private static String jsonFacetError = "{"
+            + "\"name\":\"facet A\","
+            + "\"expression\":\"value+\\\"bar\\\"\","
+            + "\"columnName\":\"Column A\","
+            + "\"invert\":false,"
+            + "\"error\":\"No column named Column A\"}\" are not equal as JSON strings.\n" + 
+            "}";
+    
+    private static String jsonFacet = "{"
+            + "\"name\":\"facet A\","
+            + "\"expression\":\"value+\\\"bar\\\"\","
+            + "\"columnName\":\"Column A\","
+            + "\"invert\":false,"
+            + "\"choices\":["
+            + "     {\"v\":{\"v\":\"foobar\",\"l\":\"foobar\"},\"c\":1,\"s\":true},"
+            + "     {\"v\":{\"v\":\"barbar\",\"l\":\"barbar\"},\"c\":1,\"s\":false}"
+            + "]}";
+
+    @Test
+    public void serializeListFacetConfig() {
+        ListFacetConfig facetConfig = new ListFacetConfig();
+        facetConfig.initializeFromJSON(new JSONObject(jsonConfig));
+        TestUtils.isSerializedTo(facetConfig, jsonConfig);
+    }
+    
+    @Test
+    public void serializeListFacet() {
+        Project project = createCSVProject("Column A\n" +
+                "foo\n" +
+                "bar\n");
+        Engine engine = new Engine(project);
+        
+        ListFacetConfig facetConfig = new ListFacetConfig();
+        facetConfig.initializeFromJSON(new JSONObject(jsonConfig));
+        
+        Facet facet = facetConfig.apply(project);
+        facet.computeChoices(project, engine.getAllFilteredRows());
+        
+        TestUtils.isSerializedTo(facet, jsonFacet);
+    }
+    
+    @Test
+    public void serializeListFacetWithError() {
+        Project project = createCSVProject("other column\n" +
+                "foo\n" +
+                "bar\n");
+       
+        ListFacetConfig facetConfig = new ListFacetConfig();
+        facetConfig.initializeFromJSON(new JSONObject(jsonConfig));
+        Facet facet = facetConfig.apply(project);
+        TestUtils.isSerializedTo(facet, jsonFacetError);
+    }
+}