Update CubicHermiteSplineSpec.kt

sanity · Dec 30, 2016 · 807e53f · 807e53f
1 parent 7d66477
commit 807e53f
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/src/test/kotlin/com/github/sanity/pav/spline/CubicHermiteSplineSpec.kt b/src/test/kotlin/com/github/sanity/pav/spline/CubicHermiteSplineSpec.kt
@@ -20,13 +20,14 @@ class CubicHermiteSplineSpec : FreeSpec() {
         "Spline should intersect (x2,y2)" {
             chs.interpolate(x2) shouldBe exactly(y2)
         }
+        val delta = 0.01
         "Spline slope at x1,y1 should be approximately m1" {
-            val slope = (chs.interpolate(1.51)-chs.interpolate(x1)) / 0.01
+            val slope = (chs.interpolate(x1 + delta)-chs.interpolate(x1)) / delta
             slope shouldBe (m1 plusOrMinus 0.05)
         }
         "Spline slope at x2,y2 should be approximately m2" {
-            val slope = (chs.interpolate(3.21)-chs.interpolate(x2)) / 0.01
+            val slope = (chs.interpolate(x2 + delta)-chs.interpolate(x2)) / delta
             slope shouldBe (m2 plusOrMinus 0.05)
         }
     }
-}
+}