mirror of
https://github.com/danog/liquid.git
synced 2024-11-27 08:44:40 +01:00
153 lines
3.2 KiB
Go
153 lines
3.2 KiB
Go
package expressions
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
var evaluatorTests = []struct {
|
|
in string
|
|
expected interface{}
|
|
}{
|
|
// Literals
|
|
{`12`, 12},
|
|
{`12.3`, 12.3},
|
|
{`true`, true},
|
|
{`false`, false},
|
|
{`'abc'`, "abc"},
|
|
{`"abc"`, "abc"},
|
|
|
|
// Variables
|
|
{`n`, 123},
|
|
|
|
// Attributes
|
|
{`hash.a`, "first"},
|
|
{`hash.b.c`, "d"},
|
|
{`hash.x`, nil},
|
|
{`fruits.first`, "apples"},
|
|
{`fruits.last`, "plums"},
|
|
{`empty_list.first`, nil},
|
|
{`empty_list.last`, nil},
|
|
{`"abc".size`, 3},
|
|
{`fruits.size`, 4},
|
|
{`hash.size`, 3},
|
|
{`hash_with_size_key.size`, "key_value"},
|
|
|
|
// Indices
|
|
{`array[1]`, "second"},
|
|
{`array[-1]`, "third"}, // undocumented
|
|
{`array[100]`, nil},
|
|
{`hash[1]`, nil},
|
|
{`hash.c[0]`, "r"},
|
|
|
|
// Expressions
|
|
{`(n)`, 123},
|
|
|
|
// Operators
|
|
{`1 == 1`, true},
|
|
{`1 == 2`, false},
|
|
{`1.0 == 1.0`, true},
|
|
{`1.0 == 2.0`, false},
|
|
{`1.0 == 1`, true},
|
|
{`1 == 1.0`, true},
|
|
{`"a" == "a"`, true},
|
|
{`"a" == "b"`, false},
|
|
|
|
{`1 != 1`, false},
|
|
{`1 != 2`, true},
|
|
{`1.0 != 1.0`, false},
|
|
{`1 != 1.0`, false},
|
|
{`1 != 2.0`, true},
|
|
|
|
{`1 < 2`, true},
|
|
{`2 < 1`, false},
|
|
{`1.0 < 2.0`, true},
|
|
{`1.0 < 2`, true},
|
|
{`1 < 2.0`, true},
|
|
{`1.0 < 2`, true},
|
|
{`"a" < "a"`, false},
|
|
{`"a" < "b"`, true},
|
|
{`"b" < "a"`, false},
|
|
|
|
{`1 > 2`, false},
|
|
{`2 > 1`, true},
|
|
|
|
{`1 <= 1`, true},
|
|
{`1 <= 2`, true},
|
|
{`2 <= 1`, false},
|
|
{`"a" <= "a"`, true},
|
|
{`"a" <= "b"`, true},
|
|
{`"b" <= "a"`, false},
|
|
|
|
{`1 >= 1`, true},
|
|
{`1 >= 2`, false},
|
|
{`2 >= 1`, true},
|
|
|
|
{`true and false`, false},
|
|
{`true and true`, true},
|
|
{`true and true and true`, true},
|
|
{`false or false`, false},
|
|
{`false or true`, true},
|
|
|
|
{`"seafood" contains "foo"`, true},
|
|
{`"seafood" contains "bar"`, false},
|
|
{`array contains "first"`, true},
|
|
{`interface_array contains "first"`, true},
|
|
{`"foo" contains "missing"`, false},
|
|
{`nil contains "missing"`, false},
|
|
|
|
// filters
|
|
{`"seafood" | length`, 8},
|
|
}
|
|
|
|
var evaluatorTestBindings = (map[string]interface{}{
|
|
"n": 123,
|
|
"array": []string{"first", "second", "third"},
|
|
"interface_array": []interface{}{"first", "second", "third"},
|
|
"empty_list": []interface{}{},
|
|
"fruits": []string{"apples", "oranges", "peaches", "plums"},
|
|
"hash": map[string]interface{}{
|
|
"a": "first",
|
|
"b": map[string]interface{}{"c": "d"},
|
|
"c": []string{"r", "g", "b"},
|
|
},
|
|
"hash_with_size_key": map[string]interface{}{"size": "key_value"},
|
|
})
|
|
|
|
func TestEvaluateString(t *testing.T) {
|
|
cfg := NewConfig()
|
|
cfg.AddFilter("length", strings.Count)
|
|
ctx := NewContext(evaluatorTestBindings, cfg)
|
|
for i, test := range evaluatorTests {
|
|
t.Run(fmt.Sprintf("%02d", i), func(t *testing.T) {
|
|
val, err := EvaluateString(test.in, ctx)
|
|
require.NoErrorf(t, err, test.in)
|
|
require.Equalf(t, test.expected, val, test.in)
|
|
})
|
|
}
|
|
|
|
_, err := EvaluateString("syntax error", ctx)
|
|
require.Error(t, err)
|
|
|
|
_, err = EvaluateString("1 | undefined_filter", ctx)
|
|
require.Error(t, err)
|
|
}
|
|
|
|
func TestClosure(t *testing.T) {
|
|
cfg := NewConfig()
|
|
ctx := NewContext(map[string]interface{}{"x": 1}, cfg)
|
|
expr, err := Parse("x")
|
|
require.NoError(t, err)
|
|
c1 := closure{expr, ctx}
|
|
c2 := c1.Bind("x", 2)
|
|
x1, err := c1.Evaluate()
|
|
require.NoError(t, err)
|
|
x2, err := c2.Evaluate()
|
|
require.NoError(t, err)
|
|
require.Equal(t, 1, x1)
|
|
require.Equal(t, 2, x2)
|
|
}
|