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2e107bef29
Sometimes a consumer of a template needs to know what objects were used. In my case, a template can reference secret values from a secret store vault and instead of passing all possible secrets to the template only to render two of them, we use the ast to determine which are used and only retrieve those values from the vault before rendering the template. Exposing the ast allows us to use the liquid APIs just like normal, without having to jump through hoops to build the ast ourselves using the other types exported in this library. Signed-off-by: Carolyn Van Slyck <me@carolynvanslyck.com>
118 lines
2.8 KiB
Go
118 lines
2.8 KiB
Go
package liquid
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import (
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"fmt"
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"sync"
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"testing"
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"github.com/osteele/liquid/render"
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"github.com/stretchr/testify/require"
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)
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func TestTemplate_GetRoot(t *testing.T) {
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root := &render.SeqNode{}
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tmpl := Template{root: root}
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require.Same(t, root, tmpl.GetRoot())
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}
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func TestTemplate_RenderString(t *testing.T) {
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engine := NewEngine()
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tpl, err := engine.ParseTemplate([]byte(`{{ "hello world" | capitalize }}`))
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require.NoError(t, err)
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out, err := tpl.RenderString(testBindings)
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require.NoError(t, err)
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require.Equal(t, "Hello world", out)
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}
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func TestTemplate_SetSourcePath(t *testing.T) {
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engine := NewEngine()
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engine.RegisterTag("sourcepath", func(c render.Context) (string, error) {
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return c.SourceFile(), nil
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})
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tpl, err := engine.ParseTemplateLocation([]byte(`{% sourcepath %}`), "source.md", 1)
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require.NoError(t, err)
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out, err := tpl.RenderString(testBindings)
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require.NoError(t, err)
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require.Equal(t, "source.md", out)
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src := []byte(`{{ n | undefined_filter }}`)
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t1, err := engine.ParseTemplateLocation(src, "path1", 1)
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require.NoError(t, err)
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t2, err := engine.ParseTemplateLocation(src, "path2", 1)
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require.NoError(t, err)
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_, err = t1.Render(Bindings{})
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require.Error(t, err)
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require.Equal(t, "path1", err.Path())
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_, err = t2.Render(Bindings{})
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require.Error(t, err)
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require.Equal(t, "path2", err.Path())
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}
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func TestTemplate_Parse_race(t *testing.T) {
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var (
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engine = NewEngine()
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count = 10
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wg sync.WaitGroup
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)
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for i := 0; i < count; i++ {
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wg.Add(1)
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go func(i int) {
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path := fmt.Sprintf("path %d", i)
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_, err := engine.ParseTemplateLocation([]byte("{{ syntax error }}"), path, i)
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require.Error(t, err)
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require.Equal(t, path, err.Path())
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wg.Done()
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}(i)
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}
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wg.Wait()
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}
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func TestTemplate_Render_race(t *testing.T) {
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src := []byte(`{{ n | undefined_filter }}`)
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engine := NewEngine()
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var (
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count = 10
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paths = make([]string, count)
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ts = make([]*Template, count)
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wg sync.WaitGroup
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)
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for i := 0; i < count; i++ {
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paths[i] = fmt.Sprintf("path %d", i)
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wg.Add(1)
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go func(i int) {
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defer wg.Done()
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var err error
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ts[i], err = engine.ParseTemplateLocation(src, paths[i], i)
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require.NoError(t, err)
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}(i)
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}
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wg.Wait()
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var wg2 sync.WaitGroup
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for i := 0; i < count; i++ {
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wg2.Add(1)
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go func(i int) {
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defer wg2.Done()
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_, err := ts[i].Render(Bindings{})
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require.Error(t, err)
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require.Equal(t, paths[i], err.Path())
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}(i)
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}
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wg2.Wait()
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}
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func BenchmarkTemplate_Render(b *testing.B) {
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engine := NewEngine()
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bindings := Bindings{"a": "string value"}
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tpl, err := engine.ParseString(`{% for i in (1..1000) %}{% if i > 500 %}{{a}}{% else %}0{% endif %}{% endfor %}`)
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if err != nil {
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b.Fatal(err)
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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_, err := tpl.Render(bindings)
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require.NoError(b, err)
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}
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}
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