Adding tests

Author: mattgperry

CHANGELOG.md

@@ -4,11 +4,11 @@ Motion adheres to [Semantic Versioning](http://semver.org/).
 
 Undocumented APIs should be considered internal and may change without warning.
 
-## [12.17.0] 2025-06-08
+## [12.18.0] 2025-06-12
 
 ### Added
 
--   Support for defining a timeline position relative to the start of the most recently added animation (e.g. `<0.5`, `<-1`)
+-   Support for defining a timeline position relative to the start of the most recently added animation (e.g. `<+0.5`, `<-1`)
 
 ## [12.17.3] 2025-06-12
 

packages/framer-motion/src/animation/sequence/utils/__tests__/calc-time.test.ts

@@ -23,8 +23,10 @@ describe("calcNextTime", () => {
 
         // Relative to previous
         expect(calcNextTime(5, "<1", 100, labels)).toBe(101)
+        expect(calcNextTime(5, "<+1", 100, labels)).toBe(101)
         expect(calcNextTime(5, "<-1", 100, labels)).toBe(99)
         expect(calcNextTime(5, "<2.5", 100, labels)).toBe(102.5)
+        expect(calcNextTime(5, "<+2.5", 100, labels)).toBe(102.5)
         expect(calcNextTime(5, "<-2.5", 100, labels)).toBe(97.5)
         expect(calcNextTime(5, "<-150", 100, labels)).toBe(0)
     })