tree 8995124e6c9e1a92ac8db42f687c393ca1d4f7e0
parent 6e2d5a66ca24c0fde90b3d6840a972341a1100f1
author Andrey Kulikov <andreykulikov@google.com> 1670009265 +0000
committer Andrey Kulikov <andreykulikov@google.com> 1670431475 +0000

Define offsets in lazy animate item placement tests in floats

It makes the test results more reliable. There are multiple ways to define an offset based on the fraction. First one is
startPosition + ((endPosition - startPosition) * fraction).roundToInt()
And the second one is:
endPosition - ((endPosition - startPosition) * fraction).roundToInt()
Lets say startPosition is 0 and startPosition is 9. Then for the first expression we have
0 + ((9 - 0) * 0.5).roundToInt() = 4.5.roundToInt() = 5
And for the second one we have
9 - ((9 - 0) * 0.5).roundToInt() = 9 - 4.5.roundToInt() = 9 - 5 = 4
But if instead we will be using floats for calculations and only round the result to int right before doing the assertion both expressions will produce 4.5f which we round to 5.

Test: run those tests
Change-Id: I9e590a066b2e41b6e00a293e7a7fcde09a312b69