package day25

import (
	"testing"
)

func TestReadFileExample(t *testing.T) {
	filename := "example"
	g := ReadGraphFile(filename)
	t.Logf("read graph %+v", g)
}

func TestRemoveEdge(t *testing.T) {
	filename := "example"
	g := ReadGraphFile(filename)
	t.Logf("read graph %+v", g)

	g.RemoveEdge("bvb", "hfx")
	t.Logf("after removing bvb-hfv %+v", g)
}

func TestRunFindCycle(t *testing.T) {
	filename := "example"
	g := ReadGraphFile(filename)
	g.DoThreeRemovals()
}

func TestCreateExampleMermaid(t *testing.T) {
	filename := "example"
	g := ReadGraphFile(filename)

	g.SaveAsMermaid("example-graph.mmd")
}

func TestComponentOnInitial(t *testing.T) {
	// should be all nodes
	filename := "example"
	g := ReadGraphFile(filename)
	comp := g.ComponentFrom("bvb")
	t.Logf("got component %+v", comp)
	if comp.Cardinality() != len(g.Nodes) {
		t.Errorf("should have same size!")
	}
}

func TestComponentOnMini(t *testing.T) {
	// should be all nodes
	filename := "example2"
	g := ReadGraphFile(filename)
	comp := g.ComponentFrom("jqt")
	t.Logf("got component %+v", comp)
	if comp.Cardinality() == len(g.Nodes) {
		t.Errorf("should have different size!")
	}
}

func TestRemoveAllCycles(t *testing.T) {
	filename := "example"
	g := ReadGraphFile(filename)
	g.SaveAsMermaid("example-before-removing.mmd")
	edges := g.RemoveAllCycles()
	t.Logf("removed edges %+v", edges)
	g.SaveAsMermaid("example-after-removing.mmd")
}