use plain pkg module

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

pkg/ast/test/test.go

@@ -0,0 +1,26 @@
+// Package test provides shared test primitives for ast testing.
+package test
+
+import (
+	"github.com/google/go-cmp/cmp"
+	"github.com/google/go-cmp/cmp/cmpopts"
+	"github.com/opencloud-eu/opencloud/pkg/ast"
+)
+
+// DiffAst returns a human-readable report of the differences between two values
+// by default it ignores every ast node Base field.
+func DiffAst(x, y interface{}, opts ...cmp.Option) string {
+	return cmp.Diff(
+		x,
+		y,
+		append(
+			opts,
+			cmpopts.IgnoreFields(ast.Ast{}, "Base"),
+			cmpopts.IgnoreFields(ast.StringNode{}, "Base"),
+			cmpopts.IgnoreFields(ast.OperatorNode{}, "Base"),
+			cmpopts.IgnoreFields(ast.GroupNode{}, "Base"),
+			cmpopts.IgnoreFields(ast.BooleanNode{}, "Base"),
+			cmpopts.IgnoreFields(ast.DateTimeNode{}, "Base"),
+		)...,
+	)
+}