40 lines
685 B
Go
40 lines
685 B
Go
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package dag
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import (
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"reflect"
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"testing"
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)
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func TestGraphDot_opts(t *testing.T) {
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var v testDotVertex
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var g Graph
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g.Add(&v)
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opts := &DotOpts{MaxDepth: 42}
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actual := g.Dot(opts)
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if len(actual) == 0 {
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t.Fatal("should not be empty")
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}
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if !v.DotNodeCalled {
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t.Fatal("should call DotNode")
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}
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if !reflect.DeepEqual(v.DotNodeOpts, opts) {
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t.Fatalf("bad; %#v", v.DotNodeOpts)
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}
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}
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type testDotVertex struct {
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DotNodeCalled bool
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DotNodeTitle string
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DotNodeOpts *DotOpts
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DotNodeReturn *DotNode
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}
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func (v *testDotVertex) DotNode(title string, opts *DotOpts) *DotNode {
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v.DotNodeCalled = true
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v.DotNodeTitle = title
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v.DotNodeOpts = opts
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return v.DotNodeReturn
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}
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