Add Format.has() method to test for whether a Format has a Raster

Author: jericks

src/main/groovy/geoscript/layer/Format.groovy

@@ -197,6 +197,15 @@ class Format {
         names
     }
 
+    /**
+     * Whether the Format has a Raster by the given name
+     * @param name The Raster name
+     * @return Whether the Format has a Raster by the given name
+     */
+    boolean has(String name) {
+        getNames().contains(name)
+    }
+
     /**
      * Get metadata
      * @param name The optional Raster name

src/test/groovy/geoscript/layer/FormatTestCase.groovy

@@ -17,13 +17,18 @@ class FormatTestCase {
         assertNotNull(format)
         assertNotNull(format.stream)
         assertTrue(format instanceof GeoTIFF)
+        assertTrue(format.has("alki"))
+        assertFalse(format.has("badname"))
 
         // Existing NetCDF
         file = new File(getClass().getClassLoader().getResource("O3-NO2.nc").toURI())
         format = Format.getFormat(file)
         assertNotNull(format)
         assertNotNull(format.stream)
         assertTrue(format instanceof NetCDF)
+        assertTrue(format.has("NO2"))
+        assertTrue(format.has("O3"))
+        assertFalse(format.has("A123"))
 
         // New png file
         file = new File("doesnotexist.png")