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619e1e2a0a
This adds code to parse TOML files into Values maps. These can then easily be passed into the template engine. Included in this is support for TOML "tables", subsections of TOML files. We will be using those to pass config data to dependent charts.
134 lines
2.8 KiB
Go
134 lines
2.8 KiB
Go
package chart
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import (
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"bytes"
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"fmt"
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"testing"
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"text/template"
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)
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func TestReadValues(t *testing.T) {
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doc := `# Test TOML parse
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poet = "Coleridge"
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title = "Rime of the Ancient Mariner"
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stanza = ["at", "length", "did", "cross", "an", "Albatross"]
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[mariner]
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with = "crossbow"
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shot = "ALBATROSS"
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[water.water]
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where = "everywhere"
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nor = "any drop to drink"
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`
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data, err := ReadValues([]byte(doc))
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if err != nil {
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t.Fatalf("Error parsing bytes: %s", err)
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}
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matchValues(t, data)
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}
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func TestReadValuesFile(t *testing.T) {
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data, err := ReadValuesFile("./testdata/coleridge.toml")
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if err != nil {
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t.Fatalf("Error reading TOML file: %s", err)
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}
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matchValues(t, data)
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}
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func ExampleValues() {
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doc := `title="Moby Dick"
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[chapter.one]
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title = "Loomings"
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[chapter.two]
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title = "The Carpet-Bag"
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[chapter.three]
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title = "The Spouter Inn"
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`
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d, err := ReadValues([]byte(doc))
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if err != nil {
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panic(err)
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}
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ch1, err := d.Table("chapter.one")
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if err != nil {
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panic("could not find chapter one")
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}
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fmt.Print(ch1["title"])
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// Output:
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// Loomings
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}
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func TestTable(t *testing.T) {
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doc := `title="Moby Dick"
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[chapter.one]
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title = "Loomings"
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[chapter.two]
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title = "The Carpet-Bag"
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[chapter.three]
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title = "The Spouter Inn"
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`
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d, err := ReadValues([]byte(doc))
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if err != nil {
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t.Fatalf("Failed to parse the White Whale: %s", err)
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}
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if _, err := d.Table("title"); err == nil {
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t.Fatalf("Title is not a table.")
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}
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if _, err := d.Table("chapter"); err != nil {
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t.Fatalf("Failed to get the chapter table: %s\n%v", err, d)
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}
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if v, err := d.Table("chapter.one"); err != nil {
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t.Errorf("Failed to get chapter.one: %s", err)
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} else if v["title"] != "Loomings" {
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t.Errorf("Unexpected title: %s", v["title"])
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}
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if _, err := d.Table("chapter.three"); err != nil {
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t.Errorf("Chapter three is missing: %s\n%v", err, d)
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}
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if _, err := d.Table("chapter.OneHundredThirtySix"); err == nil {
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t.Errorf("I think you mean 'Epilogue'")
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}
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}
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func matchValues(t *testing.T, data map[string]interface{}) {
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if data["poet"] != "Coleridge" {
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t.Errorf("Unexpected poet: %s", data["poet"])
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}
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if o, err := ttpl("{{len .stanza}}", data); err != nil {
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t.Errorf("len stanza: %s", err)
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} else if o != "6" {
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t.Errorf("Expected 6, got %s", o)
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}
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if o, err := ttpl("{{.mariner.shot}}", data); err != nil {
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t.Errorf(".mariner.shot: %s", err)
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} else if o != "ALBATROSS" {
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t.Errorf("Expected that mariner shot ALBATROSS")
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}
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if o, err := ttpl("{{.water.water.where}}", data); err != nil {
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t.Errorf(".water.water.where: %s", err)
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} else if o != "everywhere" {
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t.Errorf("Expected water water everywhere")
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}
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}
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func ttpl(tpl string, v map[string]interface{}) (string, error) {
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var b bytes.Buffer
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tt := template.Must(template.New("t").Parse(tpl))
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if err := tt.Execute(&b, v); err != nil {
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return "", err
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}
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return b.String(), nil
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}
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