Function TestCapAddCap

s2/cap_test.go:421–452

(t *testing.T)

}

func TestCapAddCap(t *testing.T) {
	tests := []struct {
		have  Cap
		other Cap
		want  Cap
	}{
		// Identity cases.
		{emptyCap, emptyCap, emptyCap},
		{fullCap, fullCap, fullCap},

		// Anything plus empty equals itself.
		{fullCap, emptyCap, fullCap},
		{emptyCap, fullCap, fullCap},
		{xAxis, emptyCap, xAxis},
		{emptyCap, xAxis, xAxis},
		{yAxis, emptyCap, yAxis},
		{emptyCap, yAxis, yAxis},

		// Two halves make a whole.
		{xAxis, xComp, fullCap},

		// Two zero-height orthogonal axis caps make a half-cap.
		{xAxis, yAxis, CapFromCenterAngle(xAxisPt, s1.Angle(math.Pi/2.0))},
	}

	for _, test := range tests {
		got := test.have.AddCap(test.other)
		if !got.ApproxEqual(test.want) {
			t.Errorf("%v.AddCap(%v) = %v, want %v", test.have, test.other, got, test.want)
		}
	}
}

func TestCapContainsCell(t *testing.T) {
	faceRadius := math.Atan(math.Sqrt2)