Ensure sharp.format.vips is present and correct #1813

test/unit/metadata.js

@@ -232,6 +232,26 @@ describe('Image metadata', function () {
       done();
     });
   });
+  it('vips', () =>
+    sharp(fixtures.inputV)
+      .metadata()
+      .then(metadata => {
+        assert.strictEqual('vips', metadata.format);
+        assert.strictEqual('undefined', typeof metadata.size);
+        assert.strictEqual(70, metadata.width);
+        assert.strictEqual(60, metadata.height);
+        assert.strictEqual(3, metadata.channels);
+        assert.strictEqual('uchar', metadata.depth);
+        assert.strictEqual(72, metadata.density);
+        assert.strictEqual('undefined', typeof metadata.chromaSubsampling);
+        assert.strictEqual(false, metadata.isProgressive);
+        assert.strictEqual(false, metadata.hasProfile);
+        assert.strictEqual(false, metadata.hasAlpha);
+        assert.strictEqual('undefined', typeof metadata.orientation);
+        assert.strictEqual('undefined', typeof metadata.exif);
+        assert.strictEqual('undefined', typeof metadata.icc);
+      })
+  );
 
   it('File in, Promise out', function (done) {
     sharp(fixtures.inputJpg).metadata().then(function (metadata) {

test/unit/util.js

@@ -118,6 +118,13 @@ describe('Utilities', function () {
         assert.strictEqual(true, sharp.format.raw[direction].stream);
       });
     });
+    it('vips format supports filesystem only', function () {
+      ['input', 'output'].forEach(function (direction) {
+        assert.strictEqual(true, sharp.format.vips[direction].file);
+        assert.strictEqual(false, sharp.format.vips[direction].buffer);
+        assert.strictEqual(false, sharp.format.vips[direction].stream);
+      });
+    });
   });
 
   describe('Versions', function () {