Integration tests for builder deserialization with Jackson. The generic test fails due to a bug in Jackson - FasterXML/jackson-databind#921 - and is currently disabled. (#16)

Author: vjkoskela

src/test/java/com/arpnetworking/commons/jackson/databind/module/BuilderModuleTest.java

@@ -15,14 +15,21 @@
  */
 package com.arpnetworking.commons.jackson.databind.module;
 
+import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.Module;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.introspect.AnnotationIntrospectorPair;
+import org.junit.Assert;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.mockito.Mock;
 import org.mockito.Mockito;
 import org.mockito.MockitoAnnotations;
 
+import java.io.IOException;
+import java.util.Objects;
+
 /**
  * Test for the BuilderModule class.
  *
@@ -42,6 +49,150 @@ public void test() {
         Mockito.verify(_context).insertAnnotationIntrospector(Mockito.any(AnnotationIntrospectorPair.class));
     }
 
+    @Test
+    public void testSimpleRoundTrip() throws IOException {
+        final ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.registerModule(new BuilderModule());
+
+        final PojoWithBuilder pojo = new PojoWithBuilder.Builder()
+                .setInt(1)
+                .build();
+        final String pojoAsJson = objectMapper.writeValueAsString(pojo);
+        final PojoWithBuilder actualPojo = objectMapper.readValue(pojoAsJson, PojoWithBuilder.class);
+
+        Assert.assertEquals(pojo, actualPojo);
+    }
+
+    @Test
+    @Ignore
+    public void testGenericRoundTrip() throws IOException {
+        final ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.registerModule(new BuilderModule());
+
+        final GenericPojoWithBuilder<PojoWithBuilder> pojo = new GenericPojoWithBuilder.Builder<PojoWithBuilder>()
+                .setVal(
+                        new PojoWithBuilder.Builder()
+                                .setInt(1)
+                                .build())
+                .build();
+        final String pojoAsJson = objectMapper.writeValueAsString(pojo);
+        final GenericPojoWithBuilder<PojoWithBuilder> actualPojo = objectMapper.readValue(
+                pojoAsJson,
+                TYPE_REFERENCE_GENERIC_POJO_WITH_BUILDER);
+        Assert.assertEquals(pojo, actualPojo);
+    }
+
     @Mock
     private Module.SetupContext _context;
+
+    private static final TypeReference<GenericPojoWithBuilder<PojoWithBuilder>> TYPE_REFERENCE_GENERIC_POJO_WITH_BUILDER = 
+            new TypeReference<GenericPojoWithBuilder<PojoWithBuilder>>(){};
+
+    /**
+     * Test class.
+     */
+    public static class PojoWithBuilder {
+
+        protected PojoWithBuilder(final Builder builder) {
+            _int = builder._int;
+        }
+
+        public int getInt() {
+            return _int;
+        }
+
+        @Override
+        public boolean equals(final Object other) {
+            if (this == other) {
+                return true;
+            }
+            if (!(other instanceof PojoWithBuilder)) {
+                return false;
+            }
+            final PojoWithBuilder otherPojo = (PojoWithBuilder) other;
+            return otherPojo._int == this._int;
+        }
+
+        @Override
+        public int hashCode() {
+            return _int;
+        }
+
+        private final int _int;
+
+        /**
+         * Builder for PojoWithBuilder.
+         */
+        public static class Builder implements com.arpnetworking.commons.builder.Builder<PojoWithBuilder> {
+
+            public Builder setInt(final int value) {
+                _int = value;
+                return this;
+            }
+
+            @Override
+            public PojoWithBuilder build() {
+                return new PojoWithBuilder(this);
+            }
+
+            private Integer _int;
+        }
+    }
+
+    /**
+     * Parameterized test class.
+     *
+     * @param <T> The value type.
+     */
+    public static class GenericPojoWithBuilder<T> {
+
+        protected GenericPojoWithBuilder(final Builder<T> builder) {
+            _val = builder._val;
+        }
+
+        public T getVal() {
+            return _val;
+        }
+
+        @Override
+        public boolean equals(final Object other) {
+            if (this == other) {
+                return true;
+            }
+            if (!(other instanceof GenericPojoWithBuilder)) {
+                return false;
+            }
+            @SuppressWarnings("unchecked")
+            final GenericPojoWithBuilder<T> otherPojo = (GenericPojoWithBuilder<T>) other;
+            return Objects.equals(otherPojo._val, this._val);
+        }
+
+        @Override
+        public int hashCode() {
+            return _val == null ? 0 : _val.hashCode();
+        }
+
+        private final T _val;
+
+        /**
+         * Builder for GenericPojoWithBuilder.
+         *
+         * @param <T> The value type.
+         */
+        public static class Builder<T>
+                implements com.arpnetworking.commons.builder.Builder<GenericPojoWithBuilder<T>> {
+
+            public Builder<T> setVal(final T value) {
+                _val = value;
+                return this;
+            }
+
+            @Override
+            public GenericPojoWithBuilder<T> build() {
+                return new GenericPojoWithBuilder<T>(this);
+            }
+
+            private T _val;
+        }
+    }
 }