test: fix testcases to use expected points

Author: f-frhs

src/Spatial.Tests/Euclidean/Circle2DTests.cs

@@ -79,31 +79,45 @@ public void CircleIntersectWithLine2D_NumberOfIntersections(string sc, double ra
         }
 
         //segment contains the all intersections(same to the cases of circle and line)
-        [TestCase("0,0", 1, "-10,+10", "+10,+10", 0)]
-        [TestCase("0,0", 1, "-10,+1", "+10,+1", 1)]
-        [TestCase("0,0", 1, "-10,0", "+10,0", 2)]
-        [TestCase("0,0", 1, "-10,-1", "+10,-1", 1)]
-        [TestCase("0,0", 1, "-10,-10", "+10,-10", 0)]
+        [TestCase("0,0", 1, "-10,+10", "+10,+10", "empty")]
+        [TestCase("0,0", 1, "-10,+1", "+10,+1", "0,+1")]
+        [TestCase("0,0", 1, "-10,0", "+10,0", "-1,0;+1,0")]
+        [TestCase("0,0", 1, "-10,-1", "+10,-1", "0,-1")]
+        [TestCase("0,0", 1, "-10,-10", "+10,-10", "empty")]
         //segments cross the circle's contour just 1 time
-        [TestCase("0,0", 1, "+0,+10", "+10,+10", 0)]
-        [TestCase("0,0", 1, "+0,+1", "+10,+1", 1)]
-        [TestCase("0,0", 1, "+0,0", "+10,0", 1)]
-        [TestCase("0,0", 1, "+0,-1", "+10,-1", 1)]
-        [TestCase("0,0", 1, "+0,-10", "+10,-10", 0)]
+        [TestCase("0,0", 1, "+0,+10", "+10,+10", "empty")]
+        [TestCase("0,0", 1, "+0,+1", "+10,+1", "0,1")]
+        [TestCase("0,0", 1, "+0,0", "+10,0", "1,0")]
+        [TestCase("0,0", 1, "+0,-1", "+10,-1", "0,-1")]
+        [TestCase("0,0", 1, "+0,-10", "+10,-10", "empty")]
         //segment contains no intersections(px of the startingPoint is too big to intersect with the circle)
-        [TestCase("0,0", 1, "+10,+10", "+100,+10", 0)]
-        [TestCase("0,0", 1, "+10,+01", "+100,+1", 0)]
-        [TestCase("0,0", 1, "+10,+00", "+100,0", 0)]
-        [TestCase("0,0", 1, "+10,-01", "+100,-1", 0)]
-        [TestCase("0,0", 1, "+10,-10", "+100,-10", 0)]
-        public void CircleIntersectWithLineSegment2D_NumberOfIntersections(string sCenter, double radius, string sStart, string sEnd, int expectedNumberOfIntersections)
+        [TestCase("0,0", 1, "+10,+10", "+100,+10", "empty")]
+        [TestCase("0,0", 1, "+10,+01", "+100,+1", "empty")]
+        [TestCase("0,0", 1, "+10,+00", "+100,0", "empty")]
+        [TestCase("0,0", 1, "+10,-01", "+100,-1", "empty")]
+        [TestCase("0,0", 1, "+10,-10", "+100,-10", "empty")]
+        public void CircleIntersectWithLineSegment2D_NumberOfIntersections(string sCenter, double radius, string sStart, string sEnd, string expectedIntersectionsAsString)
         {
             var circle = new Circle2D(Point2D.Parse(sCenter), radius);
             var segment = new LineSegment2D(Point2D.Parse(sStart), Point2D.Parse(sEnd));
 
             var actual = circle.IntersectWith(segment);
 
-            Assert.That(actual.Count(), Is.EqualTo(expectedNumberOfIntersections));
+            var expected = parseToPointsArray(expectedIntersectionsAsString);
+            CollectionAssert.AreEquivalent(expected, actual);
+        }
+
+        private Point2D[] parseToPointsArray(string input)
+        {
+            if (input.ToLower().Contains("empty"))
+            {
+                return new Point2D[] { };
+            }
+
+            var result = input.Split(';')
+                .Select(s => Point2D.Parse(s))
+                .ToArray();
+            return result;
         }
     }
 }