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diff --git a/src/test/java/com/jsyn/swing/TestRangeModels.java b/src/test/java/com/jsyn/swing/TestRangeModels.java
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+++ b/src/test/java/com/jsyn/swing/TestRangeModels.java
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+/*
+ * Copyright 2009 Phil Burk, Mobileer Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.jsyn.swing;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class TestRangeModels {
+
+    public void checkDoubleRange(double dmin, double dmax, double dval) {
+        int resolution = 1000;
+        DoubleBoundedRangeModel model = new DoubleBoundedRangeModel("test", resolution, dmin, dmax,
+                dval);
+        assertEquals(dmin, model.getDoubleMinimum(), 0.0001, "setup min");
+        assertEquals(dmax, model.getDoubleMaximum(), 0.0001, "setup max");
+        assertEquals(dval, model.getDoubleValue(), 0.0001, "setup value");
+
+        model.setDoubleValue(dmin);
+        assertEquals(dmin, model.getDoubleValue(), 0.0001, "min double value");
+        assertEquals(0, model.getValue(), "min value");
+
+        double dmid = (dmax + dmin) / 2.0;
+        model.setDoubleValue(dmid);
+        assertEquals(dmid, model.getDoubleValue(), 0.0001, "middle double value");
+        assertEquals(resolution / 2, model.getValue(), "middle value");
+
+        model.setDoubleValue(dmax);
+        assertEquals(dmax, model.getDoubleValue(), 0.0001, "max double value");
+        assertEquals(resolution, model.getValue(), "max value");
+
+    }
+
+    @Test
+    public void testDoubleRange() {
+        checkDoubleRange(10.0, 20.0, 12.0);
+        checkDoubleRange(-1.0, 1.0, 0.5);
+    }
+}