--- /dev/null
+/*
+BSD 3-Clause License
+
+Copyright (c) 2018, Mungo Carstairs
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+package intervalstore.nonc;
+
+import intervalstore.api.IntervalI;
+
+/**
+ * A simplified feature instance sufficient for unit test purposes
+ */
+public class SimpleFeature implements IntervalI
+{
+ final private int begin;
+
+ final private int end;
+
+ private String description;
+
+ /**
+ * Constructor
+ *
+ * @param from
+ * @param to
+ * @param desc
+ */
+ public SimpleFeature(int from, int to, String desc)
+ {
+ begin = from;
+ end = to;
+ description = desc;
+ }
+
+ /**
+ * Copy constructor
+ *
+ * @param sf1
+ */
+ public SimpleFeature(SimpleFeature sf1)
+ {
+ this(sf1.begin, sf1.end, sf1.description);
+ }
+
+ @Override
+ public int getBegin()
+ {
+ return begin;
+ }
+
+ @Override
+ public int getEnd()
+ {
+ return end;
+ }
+
+ public String getDescription()
+ {
+ return description;
+ }
+
+ @Override
+ public int hashCode()
+ {
+ return begin + 37 * end
+ + (description == null ? 0 : description.hashCode());
+ }
+
+ /**
+ * Equals method that requires two instances to have the same description, as
+ * well as start and end position.
+ */
+ @Override
+ public boolean equals(Object obj)
+ {
+ if (obj != null && obj instanceof SimpleFeature)
+ {
+ SimpleFeature o = (SimpleFeature) obj;
+ if (this.begin == o.begin && this.end == o.end)
+ {
+ if (this.description == null)
+ {
+ return o.description == null;
+ }
+ return this.description.equals(o.description);
+ }
+ }
+ return false;
+ }
+
+ @Override
+ public String toString()
+ {
+ return begin + ":" + end + ":" + description;
+ }
+
+}