102 lines
2.0 KiB
Go
102 lines
2.0 KiB
Go
package digraph
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import (
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"bytes"
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"reflect"
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"sort"
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"strings"
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"testing"
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)
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var testTable = []struct {
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BasicData string // Basic graph data
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ExpectedDigraphData string // Digraph data which should be generated from BasicData
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}{
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{
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`a -> b ; foo
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a -> c
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b -> d
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b -> e
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`,
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`digraph {
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"a";
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"a" -> "b" [label="foo"];
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"a" -> "c" [label="Edge"];
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"b";
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"b" -> "d" [label="Edge"];
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"b" -> "e" [label="Edge"];
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"c";
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"d";
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"e";
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}`,
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},
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{
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`a -> c ; foo
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a -> d
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b -> c
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b -> e
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a -> f
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`,
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`digraph {
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"a";
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"a" -> "c" [label="foo"];
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"a" -> "f" [label="Edge"];
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"a" -> "d" [label="Edge"];
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"b";
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"b" -> "c" [label="Edge"];
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"b" -> "e" [label="Edge"];
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"c";
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"d";
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"e";
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"f";
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}`,
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},
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}
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// Nieve normalizer. Takes a string, splits it and sorts it.
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func normalize(input string) []string {
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out := strings.Split(input, "\n")
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// trim each line
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for i, str := range out {
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out[i] = strings.TrimSpace(str)
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}
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sort.Strings(out)
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return out
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}
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func TestWriteDot(t *testing.T) {
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// Build []Node from BasicNode map
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var buildNodes = func(nodes map[string]*BasicNode) []Node {
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var nlist []Node
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for _, n := range nodes {
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nlist = append(nlist, n)
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}
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return nlist
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}
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// Get a normalized string representation of the file
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var writeFile = func(nlist []Node) string {
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buf := bytes.NewBuffer(nil)
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if err := WriteDot(buf, nlist); err != nil {
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t.Fatalf("err: %s", err)
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}
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return strings.TrimSpace(string(buf.Bytes()))
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}
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// For each entry in the test table construct an
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// actual and expected values and compare.
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for _, data := range testTable {
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nodes := buildNodes(ParseBasic(data.BasicData))
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actual := normalize(writeFile(nodes))
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expected := normalize(strings.TrimSpace(data.ExpectedDigraphData))
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// Deep equal the array values
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if !reflect.DeepEqual(actual, expected) {
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t.Logf("Expected:\n%s", expected)
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t.Fatalf("Bad:\n%s", actual)
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}
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}
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}
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