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package digraph
import (
"fmt"
"testing"
)
func TestParseBasic(t *testing.T) {
spec := `a -> b ; first
b -> c ; second
b -> d ; third
z -> a`
nodes := ParseBasic(spec)
if len(nodes) != 5 {
t.Fatalf("bad: %v", nodes)
}
a := nodes["a"]
if a.Name != "a" {
t.Fatalf("bad: %v", a)
}
aEdges := a.Edges()
if len(aEdges) != 1 {
t.Fatalf("bad: %v", a.Edges())
}
if fmt.Sprintf("%v", aEdges[0]) != "first" {
t.Fatalf("bad: %v", aEdges[0])
}
b := nodes["b"]
if len(b.Edges()) != 2 {
t.Fatalf("bad: %v", b.Edges())
}
c := nodes["c"]
if len(c.Edges()) != 0 {
t.Fatalf("bad: %v", c.Edges())
}
d := nodes["d"]
if len(d.Edges()) != 0 {
t.Fatalf("bad: %v", d.Edges())
}
z := nodes["z"]
zEdges := z.Edges()
if len(zEdges) != 1 {
t.Fatalf("bad: %v", z.Edges())
}
if fmt.Sprintf("%v", zEdges[0]) != "Edge" {
t.Fatalf("bad: %v", zEdges[0])
}
}
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