Refactor to regex and tests.

Closes Debugger lists immediate array dimension last #606.

java/test/processing/mode/java/debug/VariableNodeTests.java

@@ -0,0 +1,81 @@
+package processing.mode.java.debug;
+
+import com.sun.jdi.StringReference;
+import com.sun.jdi.Value;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.mockito.Mockito;
+
+
+public class VariableNodeTests {
+
+  @Test
+  public void describeInt() {
+    Value value = buildMockValue("5");
+    VariableNode node = new VariableNode("test", "int", value);
+    Assert.assertEquals(node.getStringValue(), "5");
+  }
+
+  @Test
+  public void describeFloat() {
+    Value value = buildMockValue("5.5");
+    VariableNode node = new VariableNode("test", "float", value);
+    Assert.assertEquals(node.getStringValue(), "5.5");
+  }
+
+  @Test
+  public void describeObject() {
+    Value value = buildMockValue("5.5");
+    VariableNode node = new VariableNode("test", "Other", value);
+    Assert.assertEquals(node.getStringValue(), "instance of Other");
+  }
+
+  @Test
+  public void describeString() {
+    Value value = buildMockString("testing");
+    VariableNode node = new VariableNode("test", "java.lang.String", value);
+    Assert.assertEquals(node.getStringValue(), "testing");
+  }
+
+  @Test
+  public void describeSimpleArray() {
+    Value value = buildMockValue("instance of int[5] (id=998)");
+    VariableNode node = new VariableNode("test", "int[]", value);
+    Assert.assertEquals(node.getStringValue(), "instance of int[5]");
+  }
+
+  @Test
+  public void describeNestedArraySingleDimensionUnknown() {
+    Value value = buildMockValue("instance of int[][5] (id=998)");
+    VariableNode node = new VariableNode("test", "int[][]", value);
+    Assert.assertEquals(node.getStringValue(), "instance of int[5][]");
+  }
+
+  @Test
+  public void describeNestedArrayMultiDimensionUnknown() {
+    Value value = buildMockValue("instance of int[][][5] (id=998)");
+    VariableNode node = new VariableNode("test", "int[][][]", value);
+    Assert.assertEquals(node.getStringValue(), "instance of int[5][][]");
+  }
+
+  @Test
+  public void describeNestedArrayMixed() {
+    Value value = buildMockValue("instance of int[][][5][7] (id=998)");
+    VariableNode node = new VariableNode("test", "int[][][][]", value);
+    Assert.assertEquals(node.getStringValue(), "instance of int[5][7][][]");
+  }
+
+  private Value buildMockValue(String toStringValue) {
+    Value value = Mockito.mock(Value.class);
+    Mockito.when(value.toString()).thenReturn(toStringValue);
+    return value;
+  }
+
+  private StringReference buildMockString(String innerValue) {
+    StringReference value = Mockito.mock(StringReference.class);
+    Mockito.when(value.value()).thenReturn(innerValue);
+    return value;
+  }
+
+}