add test coverage for rangeBy

Author: romainmenke

lib/__tests__/parse.test.js

@@ -40,6 +40,26 @@ describe('no interpolations', () => {
 			line: 1,
 			column: 38,
 		});
+		expect(decl.rangeBy({})).toEqual({
+			start: {
+				column: 28,
+				line: 1,
+			},
+			end: {
+				column: 39,
+				line: 1,
+			},
+		});
+		expect(decl.rangeBy({ word: 'red' })).toEqual({
+			start: {
+				column: 35,
+				line: 1,
+			},
+			end: {
+				column: 38,
+				line: 1,
+			},
+		});
 	});
 
 	test('two components', () => {
@@ -111,6 +131,26 @@ describe('no interpolations', () => {
 			line: 2,
 			column: 45,
 		});
+		expect(secondComponent.rangeBy({})).toEqual({
+			start: {
+				column: 28,
+				line: 2,
+			},
+			end: {
+				column: 47,
+				line: 2,
+			},
+		});
+		expect(secondComponent.rangeBy({ word: 'blue' })).toEqual({
+			start: {
+				column: 42,
+				line: 2,
+			},
+			end: {
+				column: 46,
+				line: 2,
+			},
+		});
 	});
 
 	test('empty component', () => {