Move User in tests to the tobuilder package.

src/test/java/org/jilt/test/ToBuilderTest.java

@@ -2,6 +2,8 @@
 
 import org.jilt.test.data.tobuilder.ToBuilderValue;
 import org.jilt.test.data.tobuilder.ToBuilderValueBuilder;
+import org.jilt.test.data.tobuilder.User;
+import org.jilt.test.data.tobuilder.UserBuilder;
 import org.junit.Test;
 
 import java.util.Collections;
@@ -17,4 +19,22 @@ public void test_to_builder() {
 
         assertThat(value).isEqualTo(builder);
     }
+
+    @Test
+    public void only_a_single_required_property_can_be_set_with_to_builder_in_staged() {
+        User original = UserBuilder.user()
+                .email("email@example.com")
+                .firstName("First")
+                .lastName("Last")
+                .build();
+        User modified = UserBuilder.modifiedUser(original)
+                .firstName("_changed_")
+                .build();
+
+        assertThat(modified.email).isEqualTo("email@example.com");
+        assertThat(modified.username).isEqualTo("email@example.com");
+        assertThat(modified.firstName).isEqualTo("_changed_");
+        assertThat(modified.lastName).isEqualTo("Last");
+        assertThat(modified.displayName).isEqualTo("First Last");
+    }
 }

src/test/java/org/jilt/test/data/user/User.java → src/test/java/org/jilt/test/data/tobuilder/User.java

@@ -1,4 +1,4 @@
-package org.jilt.test.data.user;
+package org.jilt.test.data.tobuilder;
 
 import org.jilt.Builder;
 import org.jilt.BuilderStyle;