entql: add experimental implementation for entql

entql/entql_test.go

@@ -0,0 +1,77 @@
+package entql_test
+
+import (
+	"strconv"
+	"testing"
+
+	"github.com/facebook/ent/entql"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPString(t *testing.T) {
+	tests := []struct {
+		P entql.P
+		S string
+	}{
+		{
+			P: entql.And(
+				entql.FieldEQ("name", "a8m"),
+				entql.FieldIn("org", "fb", "ent"),
+			),
+			S: `name == "a8m" && org in ["fb","ent"]`,
+		},
+		{
+			P: entql.Or(
+				entql.Not(entql.FieldEQ("name", "mashraki")),
+				entql.FieldIn("org", "fb", "ent"),
+			),
+			S: `!(name == "mashraki") || org in ["fb","ent"]`,
+		},
+		{
+			P: entql.HasEdgeWith(
+				"groups",
+				entql.HasEdgeWith(
+					"admins",
+					entql.Not(entql.FieldEQ("name", "a8m")),
+				),
+			),
+			S: `has_edge(groups, has_edge(admins, !(name == "a8m")))`,
+		},
+		{
+			P: entql.And(
+				entql.FieldGT("age", 30),
+				entql.FieldContains("workplace", "fb"),
+			),
+			S: `age > 30 && contains(workplace, "fb")`,
+		},
+		{
+			P: entql.Not(entql.FieldLT("score", 32.23)),
+			S: `!(score < 32.23)`,
+		},
+		{
+			P: entql.And(
+				entql.FieldNil("active"),
+				entql.FieldNotNil("name"),
+			),
+			S: `active == nil && name != nil`,
+		},
+		{
+			P: entql.Or(
+				entql.FieldNotIn("id", 1, 2, 3),
+				entql.FieldHasSuffix("name", "admin"),
+			),
+			S: `id not in [1,2,3] || has_suffix(name, "admin")`,
+		},
+		{
+			P: entql.EQ(entql.F("current"), entql.F("total")).Negate(),
+			S: `!(current == total)`,
+		},
+	}
+	for i := range tests {
+		t.Run(strconv.Itoa(i), func(t *testing.T) {
+			s := tests[i].P.String()
+			assert.Equal(t, tests[i].S, s)
+		})
+	}
+}