Add more complex emoji selection tests

src/SelectionManager.test.ts

@@ -211,14 +211,9 @@ describe('SelectionManager', () => {
         assert.equal(selectionManager.selectionText, ' ');
       });
       it('should treat emojis using the zero-width-joiner as a single word', () => {
+        // Note that the first 3 emojis include the invisible ZWJ char
         buffer.lines.set(0, stringArrayToRow([
-          ' ',
-          '👨‍', // Note that the first 3 emojis include the invisible ZWJ char
-          '👩‍',
-          '👧‍',
-          '👦',
-          ' ',
-          'a'
+          ' ', '👨‍', '👩‍', '👧‍', '👦', ' ', 'a'
         ])); // The a is here to prevent the space being trimmed in selectionText
         selectionManager.selectWordAt([0, 0]);
         assert.equal(selectionManager.selectionText, ' ');
@@ -235,6 +230,71 @@ describe('SelectionManager', () => {
         selectionManager.selectWordAt([5, 0]);
         assert.equal(selectionManager.selectionText, ' ');
       });
+      it('should treat emojis and characters joined together as a word', () => {
+        buffer.lines.set(0, stringToRow(' ⚽ab cd⚽ ef⚽gh')); // The a is here to prevent the space being trimmed in selectionText
+        selectionManager.selectWordAt([0, 0]);
+        assert.equal(selectionManager.selectionText, ' ');
+        selectionManager.selectWordAt([1, 0]);
+        assert.equal(selectionManager.selectionText, '⚽ab');
+        selectionManager.selectWordAt([2, 0]);
+        assert.equal(selectionManager.selectionText, '⚽ab');
+        selectionManager.selectWordAt([3, 0]);
+        assert.equal(selectionManager.selectionText, '⚽ab');
+        selectionManager.selectWordAt([4, 0]);
+        assert.equal(selectionManager.selectionText, ' ');
+        selectionManager.selectWordAt([5, 0]);
+        assert.equal(selectionManager.selectionText, 'cd⚽');
+        selectionManager.selectWordAt([6, 0]);
+        assert.equal(selectionManager.selectionText, 'cd⚽');
+        selectionManager.selectWordAt([7, 0]);
+        assert.equal(selectionManager.selectionText, 'cd⚽');
+        selectionManager.selectWordAt([8, 0]);
+        assert.equal(selectionManager.selectionText, ' ');
+        selectionManager.selectWordAt([9, 0]);
+        assert.equal(selectionManager.selectionText, 'ef⚽gh');
+        selectionManager.selectWordAt([10, 0]);
+        assert.equal(selectionManager.selectionText, 'ef⚽gh');
+        selectionManager.selectWordAt([11, 0]);
+        assert.equal(selectionManager.selectionText, 'ef⚽gh');
+        selectionManager.selectWordAt([12, 0]);
+        assert.equal(selectionManager.selectionText, 'ef⚽gh');
+        selectionManager.selectWordAt([13, 0]);
+        assert.equal(selectionManager.selectionText, 'ef⚽gh');
+      });
+      it('should treat complex emojis and characters joined together as a word', () => {
+        // This emoji is the flag for England and is made up of: 1F3F4 E0067 E0062 E0065 E006E E0067 E007F
+        buffer.lines.set(0, stringArrayToRow([
+          ' ', '🏴󠁧󠁢󠁥󠁮󠁧󠁿', 'a', 'b', ' ', 'c', 'd', '🏴󠁧󠁢󠁥󠁮󠁧󠁿', ' ', 'e', 'f', '🏴󠁧󠁢󠁥󠁮󠁧󠁿', 'g', 'h', ' ', 'a'
+        ])); // The a is here to prevent the space being trimmed in selectionText
+        selectionManager.selectWordAt([0, 0]);
+        assert.equal(selectionManager.selectionText, ' ');
+        selectionManager.selectWordAt([1, 0]);
+        assert.equal(selectionManager.selectionText, '🏴󠁧󠁢󠁥󠁮󠁧󠁿ab');
+        selectionManager.selectWordAt([2, 0]);
+        assert.equal(selectionManager.selectionText, '🏴󠁧󠁢󠁥󠁮󠁧󠁿ab');
+        selectionManager.selectWordAt([3, 0]);
+        assert.equal(selectionManager.selectionText, '🏴󠁧󠁢󠁥󠁮󠁧󠁿ab');
+        selectionManager.selectWordAt([4, 0]);
+        assert.equal(selectionManager.selectionText, ' ');
+        selectionManager.selectWordAt([5, 0]);
+        assert.equal(selectionManager.selectionText, 'cd🏴󠁧󠁢󠁥󠁮󠁧󠁿');
+        selectionManager.selectWordAt([6, 0]);
+        assert.equal(selectionManager.selectionText, 'cd🏴󠁧󠁢󠁥󠁮󠁧󠁿');
+        selectionManager.selectWordAt([7, 0]);
+        assert.equal(selectionManager.selectionText, 'cd🏴󠁧󠁢󠁥󠁮󠁧󠁿');
+        selectionManager.selectWordAt([8, 0]);
+        assert.equal(selectionManager.selectionText, ' ');
+        selectionManager.selectWordAt([9, 0]);
+        assert.equal(selectionManager.selectionText, 'ef🏴󠁧󠁢󠁥󠁮󠁧󠁿gh');
+        selectionManager.selectWordAt([10, 0]);
+        assert.equal(selectionManager.selectionText, 'ef🏴󠁧󠁢󠁥󠁮󠁧󠁿gh');
+        selectionManager.selectWordAt([11, 0]);
+        assert.equal(selectionManager.selectionText, 'ef🏴󠁧󠁢󠁥󠁮󠁧󠁿gh');
+        selectionManager.selectWordAt([12, 0]);
+        assert.equal(selectionManager.selectionText, 'ef🏴󠁧󠁢󠁥󠁮󠁧󠁿gh');
+        selectionManager.selectWordAt([13, 0]);
+        assert.equal(selectionManager.selectionText, 'ef🏴󠁧󠁢󠁥󠁮󠁧󠁿gh');
+      });
     });
   });