completed coverage for rect intersect

govector_test.go

@@ -227,19 +227,7 @@ func TestRectIntersect(t *testing.T) {
 		v        Vector2d
 		expected result
 	}{
-		{
+		// inside
-			rect: AABB2d{
-				A: Point2d{5, 5},
-				B: Point2d{15, 15},
-			},
-			p: Point2d{10, 0},
-			v: Vector2d{0, 10},
-			expected: result{
-				collided: true,
-				inside:   false,
-				pos:      Point2d{10, 5},
-			},
-		},
 		{
 			rect: AABB2d{
 				A: Point2d{0, 0},
@@ -253,6 +241,76 @@ func TestRectIntersect(t *testing.T) {
 				pos:      Point2d{1, 1},
 			},
 		},
+		// bottom
+		{
+			rect: AABB2d{
+				A: Point2d{5, 5},
+				B: Point2d{15, 15},
+			},
+			p: Point2d{10, 0},
+			v: Vector2d{0, 10},
+			expected: result{
+				collided: true,
+				inside:   false,
+				pos:      Point2d{10, 5},
+			},
+		},
+		// wall left
+		{
+			rect: AABB2d{
+				A: Point2d{0, 0},
+				B: Point2d{10, 10},
+			},
+			p: Point2d{-1, 5},
+			v: Vector2d{2, 0},
+			expected: result{
+				collided: true,
+				inside:   false,
+				pos:      Point2d{0, 5},
+			},
+		},
+		// wall right
+		{
+			rect: AABB2d{
+				A: Point2d{0, 0},
+				B: Point2d{10, 10},
+			},
+			p: Point2d{11, 5},
+			v: Vector2d{-2, 0},
+			expected: result{
+				collided: true,
+				inside:   false,
+				pos:      Point2d{10, 5},
+			},
+		},
+		// wall top
+		{
+			rect: AABB2d{
+				A: Point2d{0, 0},
+				B: Point2d{10, 10},
+			},
+			p: Point2d{5, 11},
+			v: Vector2d{0, -2},
+			expected: result{
+				collided: true,
+				inside:   false,
+				pos:      Point2d{5, 10},
+			},
+		},
+		// outside
+		{
+			rect: AABB2d{
+				A: Point2d{0, 0},
+				B: Point2d{10, 10},
+			},
+			p: Point2d{5, -1},
+			v: Vector2d{0, -1},
+			expected: result{
+				collided: false,
+				inside:   false,
+				pos:      Point2d{5, -1},
+			},
+		},
 	}
 	for _, test := range tests {
 		coll, inside, pos := RectIntersection(test.rect, test.p, test.v)
@@ -261,9 +319,10 @@ func TestRectIntersect(t *testing.T) {
 		}
 		if inside != test.expected.inside {
 			t.Errorf("RectIntersection Error")
+			t.Errorf("unexpected inside: expected: %t, actual: %t", test.expected.inside, inside)
 		}
 		if pos != test.expected.pos {
-			t.Errorf("RectIntersection Error")
+			t.Errorf("unexpected collision point: expected: %+v, actual: %+v", test.expected.pos, pos)
 		}
 	}