github.com/jonasi/terraform@v0.6.10-0.20160125170522-e865c342cc1f/digraph/basic_test.go (about)

     1  package digraph
     2  
     3  import (
     4  	"fmt"
     5  	"testing"
     6  )
     7  
     8  func TestParseBasic(t *testing.T) {
     9  	spec := `a -> b ; first
    10  b -> c ; second
    11  b -> d ; third
    12  z -> a`
    13  	nodes := ParseBasic(spec)
    14  	if len(nodes) != 5 {
    15  		t.Fatalf("bad: %v", nodes)
    16  	}
    17  
    18  	a := nodes["a"]
    19  	if a.Name != "a" {
    20  		t.Fatalf("bad: %v", a)
    21  	}
    22  	aEdges := a.Edges()
    23  	if len(aEdges) != 1 {
    24  		t.Fatalf("bad: %v", a.Edges())
    25  	}
    26  	if fmt.Sprintf("%v", aEdges[0]) != "first" {
    27  		t.Fatalf("bad: %v", aEdges[0])
    28  	}
    29  
    30  	b := nodes["b"]
    31  	if len(b.Edges()) != 2 {
    32  		t.Fatalf("bad: %v", b.Edges())
    33  	}
    34  
    35  	c := nodes["c"]
    36  	if len(c.Edges()) != 0 {
    37  		t.Fatalf("bad: %v", c.Edges())
    38  	}
    39  
    40  	d := nodes["d"]
    41  	if len(d.Edges()) != 0 {
    42  		t.Fatalf("bad: %v", d.Edges())
    43  	}
    44  
    45  	z := nodes["z"]
    46  	zEdges := z.Edges()
    47  	if len(zEdges) != 1 {
    48  		t.Fatalf("bad: %v", z.Edges())
    49  	}
    50  	if fmt.Sprintf("%v", zEdges[0]) != "Edge" {
    51  		t.Fatalf("bad: %v", zEdges[0])
    52  	}
    53  }