78 lines
1.3 KiB
Go
78 lines
1.3 KiB
Go
package terraform
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import (
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"strings"
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"testing"
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"github.com/hashicorp/terraform/dag"
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)
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func TestExpandTransform_impl(t *testing.T) {
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var _ GraphVertexTransformer = new(ExpandTransform)
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}
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func TestExpandTransform(t *testing.T) {
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var g Graph
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g.Add(1)
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g.Add(2)
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g.Connect(dag.BasicEdge(1, 2))
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tf := &ExpandTransform{}
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out, err := tf.Transform(&testExpandable{
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Result: &g,
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})
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if err != nil {
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t.Fatalf("err: %s", err)
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}
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sn, ok := out.(GraphNodeSubgraph)
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if !ok {
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t.Fatalf("not subgraph: %#v", out)
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}
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actual := strings.TrimSpace(sn.Subgraph().(*Graph).String())
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expected := strings.TrimSpace(testExpandTransformStr)
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if actual != expected {
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t.Fatalf("bad: %s", actual)
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}
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}
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func TestExpandTransform_nonExpandable(t *testing.T) {
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tf := &ExpandTransform{}
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out, err := tf.Transform(42)
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if err != nil {
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t.Fatalf("err: %s", err)
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}
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if out != 42 {
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t.Fatalf("bad: %#v", out)
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}
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}
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type testExpandable struct {
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// Inputs
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Result *Graph
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ResultError error
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// Outputs
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Builder GraphBuilder
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}
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func (n *testExpandable) Expand(b GraphBuilder) (GraphNodeSubgraph, error) {
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n.Builder = b
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return &testSubgraph{n.Result}, n.ResultError
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}
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type testSubgraph struct {
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Graph *Graph
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}
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func (n *testSubgraph) Subgraph() dag.Grapher {
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return n.Graph
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}
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const testExpandTransformStr = `
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1
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2
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2
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`
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