d30ff6cfae
Instead of constantly making these updates, let's just remove the year since things are stored in git anyways, and this is not an actual modern legal risk anymore.
1089 lines
23 KiB
Go
1089 lines
23 KiB
Go
// Mgmt
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// Copyright (C) James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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//
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// Additional permission under GNU GPL version 3 section 7
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//
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// If you modify this program, or any covered work, by linking or combining it
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// with embedded mcl code and modules (and that the embedded mcl code and
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// modules which link with this program, contain a copy of their source code in
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// the authoritative form) containing parts covered by the terms of any other
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// license, the licensors of this program grant you additional permission to
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// convey the resulting work. Furthermore, the licensors of this program grant
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// the original author, James Shubin, additional permission to update this
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// additional permission if he deems it necessary to achieve the goals of this
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// additional permission.
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//go:build !root
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package pgraph
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import (
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"reflect"
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"testing"
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)
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func TestCount1(t *testing.T) {
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G := &Graph{}
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if i := G.NumVertices(); i != 0 {
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t.Errorf("should have 0 vertices instead of: %d", i)
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}
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if i := G.NumEdges(); i != 0 {
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t.Errorf("should have 0 edges instead of: %d", i)
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}
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v1 := NV("v1")
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v2 := NV("v2")
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e1 := NE("e1")
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G.AddEdge(v1, v2, e1)
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if i := G.NumVertices(); i != 2 {
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t.Errorf("should have 2 vertices instead of: %d", i)
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}
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if i := G.NumEdges(); i != 1 {
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t.Errorf("should have 1 edges instead of: %d", i)
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}
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}
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func TestAddVertex1(t *testing.T) {
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G := &Graph{Name: "g2"}
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v1 := NV("v1")
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v2 := NV("v2")
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v3 := NV("v3")
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v4 := NV("v4")
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v5 := NV("v5")
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v6 := NV("v6")
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e1 := NE("e1")
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e2 := NE("e2")
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e3 := NE("e3")
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e4 := NE("e4")
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e5 := NE("e5")
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//e6 := NE("e6")
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G.AddEdge(v1, v2, e1)
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G.AddEdge(v2, v3, e2)
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G.AddEdge(v3, v1, e3)
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G.AddEdge(v4, v5, e4)
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G.AddEdge(v5, v6, e5)
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if i := G.NumVertices(); i != 6 {
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t.Errorf("should have 6 vertices instead of: %d", i)
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}
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}
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func TestAddEdge1(t *testing.T) {
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g, _ := NewGraph("g")
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v1 := NV("v1")
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v2 := NV("v2")
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g.AddVertex(v1)
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g.AddVertex(v2)
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if i := g.NumEdges(); i != 0 {
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t.Errorf("should have 0 edges but got %d", i)
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}
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e1 := NE("e1")
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g.AddEdge(v1, v2, e1)
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if i := g.NumEdges(); i != 1 {
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t.Errorf("should have 1 edge but got %d", i)
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}
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}
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func TestDFS1(t *testing.T) {
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G, _ := NewGraph("g3")
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v1 := NV("v1")
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v2 := NV("v2")
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v3 := NV("v3")
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v4 := NV("v4")
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v5 := NV("v5")
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v6 := NV("v6")
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e1 := NE("e1")
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e2 := NE("e2")
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e3 := NE("e3")
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e4 := NE("e4")
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e5 := NE("e5")
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//e6 := NE("e6")
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G.AddEdge(v1, v2, e1)
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G.AddEdge(v2, v3, e2)
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G.AddEdge(v3, v1, e3)
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G.AddEdge(v4, v5, e4)
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G.AddEdge(v5, v6, e5)
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//G.AddEdge(v6, v4, e6)
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out1 := G.DFS(v1)
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if i := len(out1); i != 3 {
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t.Errorf("should have 3 vertices instead of: %d", i)
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t.Errorf("found: %v", out1)
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for _, v := range out1 {
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t.Errorf("value: %s", v)
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}
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}
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out2 := G.DFS(v4)
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if i := len(out2); i != 3 {
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t.Errorf("should have 3 vertices instead of: %d", i)
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t.Errorf("found: %v", out1)
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for _, v := range out1 {
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t.Errorf("value: %s", v)
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}
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}
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}
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func TestDFS2(t *testing.T) {
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G, _ := NewGraph("g4")
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v1 := NV("v1")
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v2 := NV("v2")
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v3 := NV("v3")
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e1 := NE("e1")
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e2 := NE("e2")
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e3 := NE("e3")
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G.AddEdge(v1, v2, e1)
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G.AddEdge(v2, v3, e2)
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G.AddEdge(v3, v1, e3)
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out := G.DFS(v1)
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if i := len(out); i != 3 {
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t.Errorf("should have 3 vertices instead of: %d", i)
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t.Errorf("found: %v", out)
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for _, v := range out {
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t.Errorf("value: %s", v)
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}
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}
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}
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func TestFilterGraph1(t *testing.T) {
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G, _ := NewGraph("g5")
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v1 := NV("v1")
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v2 := NV("v2")
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v3 := NV("v3")
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v4 := NV("v4")
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v5 := NV("v5")
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v6 := NV("v6")
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e1 := NE("e1")
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e2 := NE("e2")
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e3 := NE("e3")
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e4 := NE("e4")
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e5 := NE("e5")
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//e6 := NE("e6")
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G.AddEdge(v1, v2, e1)
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G.AddEdge(v2, v3, e2)
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G.AddEdge(v3, v1, e3)
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G.AddEdge(v4, v5, e4)
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G.AddEdge(v5, v6, e5)
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//G.AddEdge(v6, v4, e6)
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save := []Vertex{v1, v2, v3}
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out, err := G.FilterGraph(save)
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if err != nil {
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t.Errorf("failed with: %v", err)
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}
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if i := out.NumVertices(); i != 3 {
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t.Errorf("should have 3 vertices instead of: %d", i)
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}
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}
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func TestFilterGraph2(t *testing.T) {
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G, _ := NewGraph("g5")
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v1 := NV("v1")
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v2 := NV("v2")
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v3 := NV("v3")
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v4 := NV("v4")
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e1 := NE("e1")
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G.AddEdge(v1, v2, e1)
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G.AddVertex(v3)
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G.AddVertex(v4)
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save := []Vertex{v1, v2, v3}
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out, err := G.FilterGraph(save)
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if err != nil {
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t.Errorf("failed with: %v", err)
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}
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if c, i := len(save), out.NumVertices(); c != i {
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t.Errorf("should have %d vertices instead of: %d", c, i)
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}
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}
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func TestFilterGraph3(t *testing.T) {
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G, _ := NewGraph("g5")
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v1 := NV("v1")
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v2 := NV("v2")
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v3 := NV("v3")
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v4 := NV("v4")
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v5 := NV("v5")
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e1 := NE("e1")
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e2 := NE("e2")
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G.AddEdge(v1, v2, e1)
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G.AddEdge(v3, v4, e2)
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G.AddVertex(v5)
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save := []Vertex{v1, v2, v3}
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out, err := G.FilterGraph(save)
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if err != nil {
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t.Errorf("failed with: %v", err)
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}
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if c, i := len(save), out.NumVertices(); c != i {
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t.Errorf("should have %d vertices instead of: %d", c, i)
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}
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if c, i := 1, out.NumEdges(); c != i {
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t.Errorf("should have %d edges instead of: %d", c, i)
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}
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}
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func TestDisconnectedGraphs1(t *testing.T) {
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G, _ := NewGraph("g6")
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v1 := NV("v1")
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v2 := NV("v2")
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v3 := NV("v3")
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v4 := NV("v4")
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v5 := NV("v5")
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v6 := NV("v6")
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e1 := NE("e1")
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e2 := NE("e2")
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e3 := NE("e3")
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e4 := NE("e4")
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e5 := NE("e5")
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//e6 := NE("e6")
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G.AddEdge(v1, v2, e1)
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G.AddEdge(v2, v3, e2)
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G.AddEdge(v3, v1, e3)
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G.AddEdge(v4, v5, e4)
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G.AddEdge(v5, v6, e5)
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//G.AddEdge(v6, v4, e6)
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graphs, err := G.DisconnectedGraphs()
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if err != nil {
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t.Errorf("failed with: %v", err)
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}
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if i := len(graphs); i != 2 {
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t.Errorf("should have 2 graphs instead of: %d", i)
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}
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}
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func TestDeleteVertex1(t *testing.T) {
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G, _ := NewGraph("g7")
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v1 := NV("v1")
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v2 := NV("v2")
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v3 := NV("v3")
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e1 := NE("e1")
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e2 := NE("e2")
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e3 := NE("e3")
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G.AddEdge(v1, v2, e1)
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G.AddEdge(v2, v3, e2)
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G.AddEdge(v3, v1, e3)
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if i := G.NumVertices(); i != 3 {
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t.Errorf("should have 3 vertices instead of: %d", i)
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}
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G.DeleteVertex(v2)
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if i := G.NumVertices(); i != 2 {
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t.Errorf("should have 2 vertices instead of: %d", i)
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}
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G.DeleteVertex(v1)
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if i := G.NumVertices(); i != 1 {
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t.Errorf("should have 1 vertices instead of: %d", i)
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}
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G.DeleteVertex(v3)
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if i := G.NumVertices(); i != 0 {
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t.Errorf("should have 0 vertices instead of: %d", i)
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}
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G.DeleteVertex(v2) // duplicate deletes don't error...
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if i := G.NumVertices(); i != 0 {
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t.Errorf("should have 0 vertices instead of: %d", i)
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}
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}
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func TestDeleteVertex2(t *testing.T) {
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G := &Graph{}
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v1 := NV("v1")
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G.DeleteVertex(v1) // check this doesn't panic
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if i := G.NumVertices(); i != 0 {
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t.Errorf("should have 0 vertices instead of: %d", i)
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}
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}
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func TestVertexContains1(t *testing.T) {
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v1 := NV("v1")
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v2 := NV("v2")
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v3 := NV("v3")
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if VertexContains(v1, []Vertex{v1, v2, v3}) != true {
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t.Errorf("should be true instead of false.")
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}
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v4 := NV("v4")
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v5 := NV("v5")
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v6 := NV("v6")
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if VertexContains(v4, []Vertex{v5, v6}) != false {
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t.Errorf("should be false instead of true.")
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}
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v7 := NV("v7")
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v8 := NV("v8")
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v9 := NV("v9")
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if VertexContains(v8, []Vertex{v7, v8, v9}) != true {
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t.Errorf("should be true instead of false.")
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}
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v1b := NV("v1") // same value, different objects
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if VertexContains(v1b, []Vertex{v1, v2, v3}) != false {
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t.Errorf("should be false instead of true.")
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}
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}
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func TestTopoSort1(t *testing.T) {
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G, _ := NewGraph("g9")
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v1 := NV("v1")
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v2 := NV("v2")
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v3 := NV("v3")
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v4 := NV("v4")
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v5 := NV("v5")
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v6 := NV("v6")
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e1 := NE("e1")
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e2 := NE("e2")
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e3 := NE("e3")
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e4 := NE("e4")
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e5 := NE("e5")
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e6 := NE("e6")
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G.AddEdge(v1, v2, e1)
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G.AddEdge(v1, v3, e2)
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G.AddEdge(v2, v4, e3)
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G.AddEdge(v3, v4, e4)
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G.AddEdge(v4, v5, e5)
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G.AddEdge(v5, v6, e6)
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indegree := G.InDegree() // map[Vertex]int
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if i := indegree[v1]; i != 0 {
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t.Errorf("indegree of v1 should be 0 instead of: %d", i)
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}
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if i := indegree[v2]; i != 1 {
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t.Errorf("indegree of v2 should be 1 instead of: %d", i)
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}
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if i := indegree[v3]; i != 1 {
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t.Errorf("indegree of v3 should be 1 instead of: %d", i)
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}
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if i := indegree[v4]; i != 2 {
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t.Errorf("indegree of v4 should be 2 instead of: %d", i)
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}
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if i := indegree[v5]; i != 1 {
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t.Errorf("indegree of v5 should be 1 instead of: %d", i)
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}
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if i := indegree[v6]; i != 1 {
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t.Errorf("indegree of v6 should be 1 instead of: %d", i)
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}
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outdegree := G.OutDegree() // map[Vertex]int
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if i := outdegree[v1]; i != 2 {
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t.Errorf("outdegree of v1 should be 2 instead of: %d", i)
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}
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if i := outdegree[v2]; i != 1 {
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t.Errorf("outdegree of v2 should be 1 instead of: %d", i)
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}
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if i := outdegree[v3]; i != 1 {
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t.Errorf("outdegree of v3 should be 1 instead of: %d", i)
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}
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if i := outdegree[v4]; i != 1 {
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t.Errorf("outdegree of v4 should be 1 instead of: %d", i)
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}
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if i := outdegree[v5]; i != 1 {
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t.Errorf("outdegree of v5 should be 1 instead of: %d", i)
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}
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if i := outdegree[v6]; i != 0 {
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t.Errorf("outdegree of v6 should be 0 instead of: %d", i)
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}
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s, err := G.TopologicalSort()
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// either possibility is a valid toposort
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match := reflect.DeepEqual(s, []Vertex{v1, v2, v3, v4, v5, v6}) || reflect.DeepEqual(s, []Vertex{v1, v3, v2, v4, v5, v6})
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if err != nil || !match {
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t.Errorf("topological sort failed, error: %v", err)
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str := "Found:"
|
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for _, v := range s {
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str += " " + v.String()
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}
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t.Errorf(str)
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}
|
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}
|
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|
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func TestTopoSort2(t *testing.T) {
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G, _ := NewGraph("g10")
|
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v1 := NV("v1")
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v2 := NV("v2")
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v3 := NV("v3")
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v4 := NV("v4")
|
|
v5 := NV("v5")
|
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v6 := NV("v6")
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e1 := NE("e1")
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e2 := NE("e2")
|
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e3 := NE("e3")
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e4 := NE("e4")
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e5 := NE("e5")
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e6 := NE("e6")
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G.AddEdge(v1, v2, e1)
|
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G.AddEdge(v2, v3, e2)
|
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G.AddEdge(v3, v4, e3)
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G.AddEdge(v4, v5, e4)
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|
G.AddEdge(v5, v6, e5)
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|
G.AddEdge(v4, v2, e6) // cycle
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|
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if _, err := G.TopologicalSort(); err == nil {
|
|
t.Errorf("topological sort passed, but graph is cyclic")
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}
|
|
}
|
|
|
|
// empty
|
|
func TestReachability0(t *testing.T) {
|
|
{
|
|
G, _ := NewGraph("g")
|
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result, err := G.Reachability(nil, nil)
|
|
if err != nil {
|
|
t.Logf("reachability failed: %+v", err)
|
|
if result != nil {
|
|
str := "Got:"
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for _, v := range result {
|
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str += " " + v.String()
|
|
}
|
|
t.Errorf(str)
|
|
}
|
|
}
|
|
}
|
|
{
|
|
G, _ := NewGraph("g")
|
|
v1 := NV("v1")
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|
v6 := NV("v6")
|
|
|
|
result, err := G.Reachability(v1, v6)
|
|
if err != nil {
|
|
t.Logf("reachability failed: %+v", err)
|
|
return
|
|
}
|
|
expected := []Vertex{}
|
|
|
|
if !reflect.DeepEqual(result, expected) {
|
|
t.Logf("reachability failed")
|
|
str := "Got:"
|
|
for _, v := range result {
|
|
str += " " + v.String()
|
|
}
|
|
t.Errorf(str)
|
|
}
|
|
}
|
|
{
|
|
G, _ := NewGraph("g")
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
v4 := NV("v4")
|
|
v5 := NV("v5")
|
|
v6 := NV("v6")
|
|
e1 := NE("e1")
|
|
e2 := NE("e2")
|
|
e3 := NE("e3")
|
|
e4 := NE("e4")
|
|
e5 := NE("e5")
|
|
G.AddEdge(v1, v2, e1)
|
|
G.AddEdge(v2, v3, e2)
|
|
G.AddEdge(v1, v4, e3)
|
|
G.AddEdge(v3, v4, e4)
|
|
G.AddEdge(v3, v5, e5)
|
|
|
|
result, err := G.Reachability(v1, v6)
|
|
if err != nil {
|
|
t.Logf("reachability failed: %+v", err)
|
|
return
|
|
}
|
|
expected := []Vertex{}
|
|
|
|
if !reflect.DeepEqual(result, expected) {
|
|
t.Logf("reachability failed")
|
|
str := "Got:"
|
|
for _, v := range result {
|
|
str += " " + v.String()
|
|
}
|
|
t.Errorf(str)
|
|
}
|
|
}
|
|
}
|
|
|
|
// simple linear path
|
|
func TestReachability1(t *testing.T) {
|
|
G, _ := NewGraph("g")
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
v4 := NV("v4")
|
|
v5 := NV("v5")
|
|
v6 := NV("v6")
|
|
e1 := NE("e1")
|
|
e2 := NE("e2")
|
|
e3 := NE("e3")
|
|
e4 := NE("e4")
|
|
e5 := NE("e5")
|
|
//e6 := NE("e6")
|
|
G.AddEdge(v1, v2, e1)
|
|
G.AddEdge(v2, v3, e2)
|
|
G.AddEdge(v3, v4, e3)
|
|
G.AddEdge(v4, v5, e4)
|
|
G.AddEdge(v5, v6, e5)
|
|
|
|
result, err := G.Reachability(v1, v6)
|
|
if err != nil {
|
|
t.Logf("reachability failed: %+v", err)
|
|
return
|
|
}
|
|
expected := []Vertex{v1, v2, v3, v4, v5, v6}
|
|
|
|
if !reflect.DeepEqual(result, expected) {
|
|
t.Logf("reachability failed")
|
|
str := "Got:"
|
|
for _, v := range result {
|
|
str += " " + v.String()
|
|
}
|
|
t.Errorf(str)
|
|
}
|
|
}
|
|
|
|
// pick one of two correct paths
|
|
func TestReachability2(t *testing.T) {
|
|
G, _ := NewGraph("g")
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
v4 := NV("v4")
|
|
v5 := NV("v5")
|
|
v6 := NV("v6")
|
|
e1 := NE("e1")
|
|
e2 := NE("e2")
|
|
e3 := NE("e3")
|
|
e4 := NE("e4")
|
|
e5 := NE("e5")
|
|
e6 := NE("e6")
|
|
G.AddEdge(v1, v2, e1)
|
|
G.AddEdge(v1, v3, e2)
|
|
G.AddEdge(v2, v4, e3)
|
|
G.AddEdge(v3, v4, e4)
|
|
G.AddEdge(v4, v5, e5)
|
|
G.AddEdge(v5, v6, e6)
|
|
|
|
result, err := G.Reachability(v1, v6)
|
|
if err != nil {
|
|
t.Logf("reachability failed: %+v", err)
|
|
return
|
|
}
|
|
expected1 := []Vertex{v1, v2, v4, v5, v6}
|
|
expected2 := []Vertex{v1, v3, v4, v5, v6}
|
|
|
|
// !xor test
|
|
if reflect.DeepEqual(result, expected1) == reflect.DeepEqual(result, expected2) {
|
|
t.Logf("reachability failed")
|
|
str := "Got:"
|
|
for _, v := range result {
|
|
str += " " + v.String()
|
|
}
|
|
t.Errorf(str)
|
|
}
|
|
}
|
|
|
|
// pick shortest path
|
|
func TestReachability3(t *testing.T) {
|
|
G, _ := NewGraph("g")
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
v4 := NV("v4")
|
|
v5 := NV("v5")
|
|
v6 := NV("v6")
|
|
e1 := NE("e1")
|
|
e2 := NE("e2")
|
|
e3 := NE("e3")
|
|
e4 := NE("e4")
|
|
e5 := NE("e5")
|
|
e6 := NE("e6")
|
|
G.AddEdge(v1, v2, e1)
|
|
G.AddEdge(v2, v3, e2)
|
|
G.AddEdge(v3, v4, e3)
|
|
G.AddEdge(v4, v5, e4)
|
|
G.AddEdge(v1, v5, e5)
|
|
G.AddEdge(v5, v6, e6)
|
|
|
|
result, err := G.Reachability(v1, v6)
|
|
if err != nil {
|
|
t.Logf("reachability failed: %+v", err)
|
|
return
|
|
}
|
|
expected := []Vertex{v1, v5, v6}
|
|
|
|
if !reflect.DeepEqual(result, expected) {
|
|
t.Logf("reachability failed")
|
|
str := "Got:"
|
|
for _, v := range result {
|
|
str += " " + v.String()
|
|
}
|
|
t.Errorf(str)
|
|
}
|
|
}
|
|
|
|
// direct path
|
|
func TestReachability4(t *testing.T) {
|
|
G, _ := NewGraph("g")
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
v4 := NV("v4")
|
|
v5 := NV("v5")
|
|
v6 := NV("v6")
|
|
e1 := NE("e1")
|
|
e2 := NE("e2")
|
|
e3 := NE("e3")
|
|
e4 := NE("e4")
|
|
e5 := NE("e5")
|
|
e6 := NE("e6")
|
|
G.AddEdge(v1, v2, e1)
|
|
G.AddEdge(v2, v3, e2)
|
|
G.AddEdge(v3, v4, e3)
|
|
G.AddEdge(v4, v5, e4)
|
|
G.AddEdge(v5, v6, e5)
|
|
G.AddEdge(v1, v6, e6)
|
|
|
|
result, err := G.Reachability(v1, v6)
|
|
if err != nil {
|
|
t.Logf("reachability failed: %+v", err)
|
|
return
|
|
}
|
|
expected := []Vertex{v1, v6}
|
|
|
|
if !reflect.DeepEqual(result, expected) {
|
|
t.Logf("reachability failed")
|
|
str := "Got:"
|
|
for _, v := range result {
|
|
str += " " + v.String()
|
|
}
|
|
t.Errorf(str)
|
|
}
|
|
}
|
|
|
|
func TestReverse1(t *testing.T) {
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
v4 := NV("v4")
|
|
v5 := NV("v5")
|
|
v6 := NV("v6")
|
|
|
|
if rev := Reverse([]Vertex{}); !reflect.DeepEqual(rev, []Vertex{}) {
|
|
t.Errorf("reverse of vertex slice failed (empty)")
|
|
}
|
|
|
|
if rev := Reverse([]Vertex{v1}); !reflect.DeepEqual(rev, []Vertex{v1}) {
|
|
t.Errorf("reverse of vertex slice failed (single)")
|
|
}
|
|
|
|
if rev := Reverse([]Vertex{v1, v2, v3, v4, v5, v6}); !reflect.DeepEqual(rev, []Vertex{v6, v5, v4, v3, v2, v1}) {
|
|
t.Errorf("reverse of vertex slice failed (1..6)")
|
|
}
|
|
|
|
if rev := Reverse([]Vertex{v6, v5, v4, v3, v2, v1}); !reflect.DeepEqual(rev, []Vertex{v1, v2, v3, v4, v5, v6}) {
|
|
t.Errorf("reverse of vertex slice failed (6..1)")
|
|
}
|
|
}
|
|
|
|
func TestCopy1(t *testing.T) {
|
|
g1 := &Graph{}
|
|
g2 := g1.Copy() // check this doesn't panic
|
|
if !reflect.DeepEqual(g1.String(), g2.String()) {
|
|
t.Errorf("graph copy failed")
|
|
}
|
|
}
|
|
|
|
func TestGraphCmp1(t *testing.T) {
|
|
g1 := &Graph{}
|
|
g2 := &Graph{}
|
|
g3 := &Graph{}
|
|
g3.AddVertex(NV("v1"))
|
|
g4 := &Graph{}
|
|
g4.AddVertex(NV("v2"))
|
|
|
|
if err := g1.GraphCmp(g2, strVertexCmpFn, strEdgeCmpFn); err != nil {
|
|
t.Errorf("should have no error during GraphCmp, but got: %v", err)
|
|
}
|
|
|
|
if err := g1.GraphCmp(g3, strVertexCmpFn, strEdgeCmpFn); err == nil {
|
|
t.Errorf("should have error during GraphCmp, but got nil")
|
|
}
|
|
|
|
if err := g3.GraphCmp(g4, strVertexCmpFn, strEdgeCmpFn); err == nil {
|
|
t.Errorf("should have error during GraphCmp, but got nil")
|
|
}
|
|
}
|
|
|
|
// FIXME: i think we should allow equivalent elements in the graph to compare...
|
|
// FIXME: currently this fails :(
|
|
//func TestGraphCmp2(t *testing.T) {
|
|
// g1 := &Graph{}
|
|
// g2 := &Graph{}
|
|
// g1.AddVertex(NV("v1"), NV("v1"))
|
|
// g2.AddVertex(NV("v1"), NV("v1"))
|
|
//
|
|
// if err := g1.GraphCmp(g2, strVertexCmpFn, strEdgeCmpFn); err != nil {
|
|
// t.Errorf("should have no error during GraphCmp, but got: %v", err)
|
|
// }
|
|
//}
|
|
|
|
func TestSort0(t *testing.T) {
|
|
vs := []Vertex{}
|
|
s := Sort(vs)
|
|
|
|
if !reflect.DeepEqual(s, []Vertex{}) {
|
|
t.Errorf("sort failed!")
|
|
if s == nil {
|
|
t.Logf("output is nil!")
|
|
} else {
|
|
str := "Got:"
|
|
for _, v := range s {
|
|
str += " " + v.String()
|
|
}
|
|
t.Errorf(str)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestSort1(t *testing.T) {
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
v4 := NV("v4")
|
|
v5 := NV("v5")
|
|
v6 := NV("v6")
|
|
|
|
vs := []Vertex{v3, v2, v6, v1, v5, v4}
|
|
s := Sort(vs)
|
|
|
|
if !reflect.DeepEqual(s, []Vertex{v1, v2, v3, v4, v5, v6}) {
|
|
t.Errorf("sort failed!")
|
|
str := "Got:"
|
|
for _, v := range s {
|
|
str += " " + v.String()
|
|
}
|
|
t.Errorf(str)
|
|
}
|
|
|
|
if !reflect.DeepEqual(vs, []Vertex{v3, v2, v6, v1, v5, v4}) {
|
|
t.Errorf("sort modified input!")
|
|
str := "Got:"
|
|
for _, v := range vs {
|
|
str += " " + v.String()
|
|
}
|
|
t.Errorf(str)
|
|
}
|
|
}
|
|
|
|
func TestSprint1(t *testing.T) {
|
|
g, _ := NewGraph("graph1")
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
v4 := NV("v4")
|
|
v5 := NV("v5")
|
|
v6 := NV("v6")
|
|
e1 := NE("e1")
|
|
e2 := NE("e2")
|
|
e3 := NE("e3")
|
|
e4 := NE("e4")
|
|
e5 := NE("e5")
|
|
g.AddEdge(v1, v2, e1)
|
|
g.AddEdge(v2, v3, e2)
|
|
g.AddEdge(v3, v4, e3)
|
|
g.AddEdge(v4, v5, e4)
|
|
g.AddEdge(v5, v6, e5)
|
|
|
|
str := g.Sprint()
|
|
t.Logf("graph is:\n%s", str)
|
|
count := 0
|
|
for count < 100000 { // about one second
|
|
x := g.Sprint()
|
|
if str != x {
|
|
t.Errorf("graph sprint is not consistent")
|
|
return
|
|
}
|
|
count++
|
|
}
|
|
}
|
|
|
|
func TestDeleteEdge1(t *testing.T) {
|
|
g, _ := NewGraph("g")
|
|
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
|
|
e1 := NE("e1")
|
|
e2 := NE("e2")
|
|
e3 := NE("e3")
|
|
e4 := NE("e4")
|
|
e5 := NE("e5")
|
|
e6 := NE("e6")
|
|
|
|
g.AddEdge(v1, v2, e1)
|
|
g.AddEdge(v2, v3, e2)
|
|
g.AddEdge(v1, v3, e3)
|
|
g.AddEdge(v2, v1, e4)
|
|
g.AddEdge(v3, v2, e5)
|
|
g.AddEdge(v3, v1, e6)
|
|
|
|
g.DeleteEdge(e1)
|
|
g.DeleteEdge(e2)
|
|
g.DeleteEdge(e3)
|
|
g.DeleteEdge(e3)
|
|
|
|
if g.NumEdges() != 3 {
|
|
t.Errorf("expected number of edges: 3, instead of: %d", g.NumEdges())
|
|
}
|
|
}
|
|
|
|
func TestDeleteEdge2(t *testing.T) {
|
|
g, _ := NewGraph("g")
|
|
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
v4 := NV("v4")
|
|
|
|
e1 := NE("e1")
|
|
e2 := NE("e2")
|
|
e3 := NE("e3")
|
|
e4 := NE("e4")
|
|
e5 := NE("e5")
|
|
e6 := NE("e6")
|
|
e7 := NE("e7")
|
|
|
|
g.AddEdge(v1, v2, e1)
|
|
g.AddEdge(v1, v2, e2)
|
|
g.AddEdge(v1, v3, e3)
|
|
g.AddEdge(v1, v4, e4)
|
|
g.AddEdge(v2, v1, e5)
|
|
g.AddEdge(v3, v1, e6)
|
|
g.AddEdge(v4, v1, e7)
|
|
|
|
g.DeleteEdge(e1)
|
|
g.DeleteEdge(e2)
|
|
g.DeleteEdge(e3)
|
|
g.DeleteEdge(e5)
|
|
g.DeleteEdge(e6)
|
|
|
|
ie := g.IncomingGraphEdges(v1)
|
|
oe := g.OutgoingGraphEdges(v1)
|
|
|
|
if !reflect.DeepEqual(ie, []Edge{e7}) {
|
|
res := ""
|
|
for _, e := range ie {
|
|
res += e.String() + " "
|
|
}
|
|
t.Errorf("expected incoming graph edges for vertex v1: e7, instead of: %s", res)
|
|
}
|
|
|
|
if !reflect.DeepEqual(oe, []Edge{e4}) {
|
|
res := ""
|
|
for _, e := range oe {
|
|
res += e.String() + " "
|
|
}
|
|
t.Errorf("expected outgoing graph edges for vertex v1: e4, instead of: %s", res)
|
|
}
|
|
}
|
|
|
|
func TestFindEdge1(t *testing.T) {
|
|
g, _ := NewGraph("g")
|
|
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
v4 := NV("v4")
|
|
v5 := NV("v5")
|
|
v6 := NV("v6")
|
|
v7 := NV("v7")
|
|
|
|
e1 := NE("e1")
|
|
e2 := NE("e2")
|
|
e3 := NE("e3")
|
|
e4 := NE("e4")
|
|
e5 := NE("e5")
|
|
e6 := NE("e6")
|
|
e7 := NE("e7")
|
|
e8 := NE("e8")
|
|
e9 := NE("e9")
|
|
e10 := NE("e10")
|
|
|
|
g.AddEdge(v1, v2, e1)
|
|
g.AddEdge(v1, v4, e2)
|
|
g.AddEdge(v1, v3, e3)
|
|
g.AddEdge(v2, v3, e4)
|
|
g.AddEdge(v2, v4, e5)
|
|
g.AddEdge(v2, v6, e6)
|
|
g.AddEdge(v2, v5, e7)
|
|
g.AddEdge(v3, v6, e8)
|
|
g.AddEdge(v4, v7, e9)
|
|
g.AddEdge(v5, v7, e10)
|
|
|
|
if !(g.HasVertex(v1) && g.HasVertex(v4) && g.HasVertex(v7)) {
|
|
t.Errorf("graph expected to have vertices v1, v4, and v7")
|
|
}
|
|
if g.FindEdge(v1, v4) != e2 {
|
|
t.Errorf("edge e2 was not returned")
|
|
}
|
|
if g.FindEdge(v1, v7) != nil {
|
|
t.Errorf("an edge was found although it did not exist")
|
|
}
|
|
}
|
|
|
|
func TestFindEdge2(t *testing.T) {
|
|
g, _ := NewGraph("g")
|
|
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
v4 := NV("v4")
|
|
v5 := NV("v5")
|
|
v6 := NV("v6")
|
|
|
|
e1 := NE("e1")
|
|
e2 := NE("e2")
|
|
e3 := NE("e3")
|
|
|
|
g.AddEdge(v1, v4, e1)
|
|
g.AddEdge(v2, v5, e2)
|
|
g.AddEdge(v3, v6, e3)
|
|
|
|
if g.FindEdge(v1, v4) != e1 {
|
|
t.Errorf("edge e1 was not returned")
|
|
}
|
|
if g.FindEdge(v2, v5) != e2 {
|
|
t.Errorf("edge e1 was not returned")
|
|
}
|
|
if g.FindEdge(v3, v6) != e3 {
|
|
t.Errorf("edge e1 was not returned")
|
|
}
|
|
if g.FindEdge(v2, v6) != nil {
|
|
t.Errorf("an edge was found although it did not exist")
|
|
}
|
|
}
|
|
|
|
func TestLookupEdge1(t *testing.T) {
|
|
g, _ := NewGraph("g")
|
|
|
|
v1 := NV("v1")
|
|
v2 := NV("v2")
|
|
v3 := NV("v3")
|
|
v4 := NV("v4")
|
|
v5 := NV("v5")
|
|
v6 := NV("v6")
|
|
v7 := NV("v7")
|
|
|
|
e1 := NE("e1")
|
|
e2 := NE("e2")
|
|
e3 := NE("e3")
|
|
e4 := NE("e4")
|
|
e5 := NE("e5")
|
|
e6 := NE("e6")
|
|
e7 := NE("e7")
|
|
e8 := NE("e8")
|
|
e9 := NE("e9")
|
|
e10 := NE("e10")
|
|
|
|
g.AddEdge(v1, v2, e1)
|
|
g.AddEdge(v1, v4, e2)
|
|
g.AddEdge(v1, v3, e3)
|
|
g.AddEdge(v2, v3, e4)
|
|
g.AddEdge(v2, v4, e5)
|
|
g.AddEdge(v2, v6, e6)
|
|
g.AddEdge(v2, v5, e7)
|
|
g.AddEdge(v3, v6, e8)
|
|
g.AddEdge(v4, v7, e9)
|
|
g.AddEdge(v5, v7, e10)
|
|
|
|
if x, y, found := g.LookupEdge(e1); !found || x != v1 || y != v2 {
|
|
t.Errorf("vertices v1, v2 were not returned")
|
|
}
|
|
if x, y, found := g.LookupEdge(e2); !found || x != v1 || y != v4 {
|
|
t.Errorf("vertices v1, v4 were not returned")
|
|
}
|
|
if x, y, found := g.LookupEdge(e3); !found || x != v1 || y != v3 {
|
|
t.Errorf("vertices v1, v3 were not returned")
|
|
}
|
|
if x, y, found := g.LookupEdge(e4); !found || x != v2 || y != v3 {
|
|
t.Errorf("vertices v2, v3 were not returned")
|
|
}
|
|
if x, y, found := g.LookupEdge(e5); !found || x != v2 || y != v4 {
|
|
t.Errorf("vertices v2, v4 were not returned")
|
|
}
|
|
if x, y, found := g.LookupEdge(e6); !found || x != v2 || y != v6 {
|
|
t.Errorf("vertices v2, v6 were not returned")
|
|
}
|
|
if x, y, found := g.LookupEdge(e7); !found || x != v2 || y != v5 {
|
|
t.Errorf("vertices v2, v5 were not returned")
|
|
}
|
|
if x, y, found := g.LookupEdge(e8); !found || x != v3 || y != v6 {
|
|
t.Errorf("vertices v3, v6 were not returned")
|
|
}
|
|
if x, y, found := g.LookupEdge(e9); !found || x != v4 || y != v7 {
|
|
t.Errorf("vertices v4, v7 were not returned")
|
|
}
|
|
if x, y, found := g.LookupEdge(e10); !found || x != v5 || y != v7 {
|
|
t.Errorf("vertices v5, v7 were not returned")
|
|
}
|
|
|
|
e99 := NE("e99")
|
|
if _, _, found := g.LookupEdge(e99); found {
|
|
t.Errorf("unexpected vertices were found")
|
|
}
|
|
}
|
|
|
|
func TestSetValue(t *testing.T) {
|
|
g, _ := NewGraph("SetValue")
|
|
|
|
key := "k1"
|
|
value := "v1"
|
|
|
|
g.SetValue(key, value)
|
|
if g.kv[key] != value {
|
|
t.Errorf("expecting value of %s at %s position, got %v", value, key, g.kv[key])
|
|
}
|
|
|
|
if v, ok := g.Value(key); !ok {
|
|
t.Errorf("key %s doesn't exist", key)
|
|
} else if v != value {
|
|
t.Errorf("expecting value of %s at %s position, got %v", value, key, v)
|
|
}
|
|
}
|