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edge_vector_shape_test_test.go
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edge_vector_shape_test_test.go
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// Copyright 2017 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package s2
import (
"testing"
)
func TestEdgeVectorShapeEmpty(t *testing.T) {
var shape edgeVectorShape
if got, want := shape.NumEdges(), 0; got != want {
t.Errorf("shape.NumEdges() = %v, want %v", got, want)
}
if got, want := shape.NumChains(), 0; got != want {
t.Errorf("shape.NumChains() = %v, want %v", got, want)
}
if got, want := shape.Dimension(), 1; got != want {
t.Errorf("shape.Dimension() = %v, want %v", got, want)
}
if !shape.IsEmpty() {
t.Errorf("shape.IsEmpty() = false, want true")
}
if shape.IsFull() {
t.Errorf("shape.IsFull() = true, want false")
}
if shape.ReferencePoint().Contained {
t.Errorf("shape.ReferencePoint().Contained should be false")
}
}
func TestEdgeVectorShapeSingletonConstructor(t *testing.T) {
a := PointFromCoords(1, 0, 0)
b := PointFromCoords(0, 1, 0)
var shape Shape = edgeVectorShapeFromPoints(a, b)
if shape.NumEdges() != 1 {
t.Errorf("shape created from one edge should only have one edge, got %v", shape.NumEdges())
}
if shape.NumChains() != 1 {
t.Errorf("should only have one edge got %v", shape.NumChains())
}
edge := shape.Edge(0)
if edge.V0 != a {
t.Errorf("vertex 0 of the edge should be the same as was used to create it. got %v, want %v", edge.V0, a)
}
if edge.V1 != b {
t.Errorf("vertex 1 of the edge should be the same as was used to create it. got %v, want %v", edge.V1, b)
}
if shape.IsEmpty() {
t.Errorf("shape.IsEmpty() = true, want false")
}
if shape.IsFull() {
t.Errorf("shape.IsFull() = true, want false")
}
}
// TODO(roberts): TestEdgeVectorShapeEdgeAccess