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liquid/engine_test.go
Oliver Steele 26d973c198
Merge pull request #41 from heyvito/feat/cache
Add support to cached templates
2022-02-11 16:29:32 +08:00

118 lines
3.3 KiB
Go

package liquid
import (
"bytes"
"encoding/json"
"fmt"
"io"
"testing"
"github.com/stretchr/testify/require"
)
var emptyBindings = map[string]interface{}{}
// There's a lot more tests in the filters and tags sub-packages.
// This collects a minimal set for testing end-to-end.
var liquidTests = []struct{ in, expected string }{
{`{{ page.title }}`, "Introduction"},
{`{% if x %}true{% endif %}`, "true"},
{`{{ "upper" | upcase }}`, "UPPER"},
}
var testBindings = map[string]interface{}{
"x": 123,
"ar": []string{"first", "second", "third"},
"page": map[string]interface{}{
"title": "Introduction",
},
}
func TestEngine_ParseAndRenderString(t *testing.T) {
engine := NewEngine()
for i, test := range liquidTests {
t.Run(fmt.Sprint(i+1), func(t *testing.T) {
out, err := engine.ParseAndRenderString(test.in, testBindings)
require.NoErrorf(t, err, test.in)
require.Equalf(t, test.expected, out, test.in)
})
}
}
func TestEngine_ParseAndRenderString_ptr_to_hash(t *testing.T) {
params := map[string]interface{}{
"message": &map[string]interface{}{
"Text": "hello",
"jsonNumber": json.Number("123"),
},
}
engine := NewEngine()
template := "{{ message.Text }} {{message.jsonNumber}}"
str, err := engine.ParseAndRenderString(template, params)
require.NoError(t, err)
require.Equal(t, "hello 123", str)
}
type testStruct struct{ Text string }
func TestEngine_ParseAndRenderString_struct(t *testing.T) {
params := map[string]interface{}{
"message": testStruct{
Text: "hello",
},
}
engine := NewEngine()
template := "{{ message.Text }}"
str, err := engine.ParseAndRenderString(template, params)
require.NoError(t, err)
require.Equal(t, "hello", str)
}
func TestEngine_ParseAndRender_errors(t *testing.T) {
_, err := NewEngine().ParseAndRenderString("{{ syntax error }}", emptyBindings)
require.Error(t, err)
_, err = NewEngine().ParseAndRenderString("{% if %}", emptyBindings)
require.Error(t, err)
_, err = NewEngine().ParseAndRenderString("{% undefined_tag %}", emptyBindings)
require.Error(t, err)
_, err = NewEngine().ParseAndRenderString("{% a | undefined_filter %}", emptyBindings)
require.Error(t, err)
}
func BenchmarkEngine_Parse(b *testing.B) {
engine := NewEngine()
buf := new(bytes.Buffer)
for i := 0; i < 1000; i++ {
_, err := io.WriteString(buf, `if{% if true %}true{% elsif %}elsif{% else %}else{% endif %}`)
require.NoError(b, err)
_, err = io.WriteString(buf, `loop{% for item in array %}loop{% break %}{% endfor %}`)
require.NoError(b, err)
_, err = io.WriteString(buf, `case{% case value %}{% when a %}{% when b %{% endcase %}`)
require.NoError(b, err)
_, err = io.WriteString(buf, `expr{{ a and b }}{{ a add: b }}`)
require.NoError(b, err)
}
s := buf.Bytes()
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := engine.ParseTemplate(s)
require.NoError(b, err)
}
}
func TestEngine_ParseTemplateAndCache(t *testing.T) {
// Given two templates...
templateA := []byte("Foo")
templateB := []byte(`{% include "template_a.html" %}, Bar`)
// Cache the first
eng := NewEngine()
_, err := eng.ParseTemplateAndCache(templateA, "template_a.html", 1)
require.NoError(t, err)
// ...and execute the second.
result, err := eng.ParseAndRender(templateB, Bindings{})
require.NoError(t, err)
require.Equal(t, string(result), "Foo, Bar")
}