⚙️ Fixup corner case when templating requires

Adds also specific tests to cover that area

pkg/tree/compiler_recipe_test.go

@@ -0,0 +1,75 @@
+// Copyright © 2019 Ettore Di Giacinto <mudler@gentoo.org>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see <http://www.gnu.org/licenses/>.
+
+// Recipe is a builder imeplementation.
+
+// It reads a Tree and spit it in human readable form (YAML), called recipe,
+// It also loads a tree (recipe) from a YAML (to a db, e.g. BoltDB), allowing to query it
+// with the solver, using the package object.
+package tree_test
+
+import (
+	"io/ioutil"
+	"os"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"github.com/mudler/luet/pkg/api/core/types"
+	pkg "github.com/mudler/luet/pkg/database"
+	. "github.com/mudler/luet/pkg/tree"
+)
+
+var _ = Describe("Templated tree", func() {
+	Context("Resolves correctly dependencies", func() {
+		It("interpolates correctly templated requires", func() {
+			db := pkg.NewInMemoryDatabase(false)
+			generalRecipe := NewCompilerRecipe(db)
+			tmpdir, err := ioutil.TempDir("", "package")
+			Expect(err).ToNot(HaveOccurred())
+			defer os.RemoveAll(tmpdir) // clean up
+
+			err = generalRecipe.Load("../../tests/fixtures/template_requires")
+			Expect(err).ToNot(HaveOccurred())
+
+			Expect(len(generalRecipe.GetDatabase().World())).To(Equal(7))
+
+			foo, err := generalRecipe.GetDatabase().FindPackage(&types.Package{Name: "foo"})
+			Expect(err).ToNot(HaveOccurred())
+			Expect(len(foo.GetRequires())).To(Equal(1))
+			Expect(foo.GetRequires()[0].Name).To(Equal("bar"))
+
+			baz, err := generalRecipe.GetDatabase().FindPackage(&types.Package{Name: "baz"})
+			Expect(err).ToNot(HaveOccurred())
+			Expect(len(baz.GetRequires())).To(Equal(1))
+			Expect(baz.GetRequires()[0].Name).To(Equal("foobar"))
+
+			bazbaz, err := generalRecipe.GetDatabase().FindPackage(&types.Package{Name: "bazbaz"})
+			Expect(err).ToNot(HaveOccurred())
+			Expect(len(bazbaz.GetRequires())).To(Equal(1))
+			Expect(bazbaz.GetRequires()[0].Name).To(Equal("foobar"))
+
+			foo, err = generalRecipe.GetDatabase().FindPackage(&types.Package{Name: "foo", Category: "test"})
+			Expect(err).ToNot(HaveOccurred())
+			Expect(len(foo.GetRequires())).To(Equal(1))
+			Expect(foo.GetRequires()[0].Name).To(Equal("bar"))
+
+			baz, err = generalRecipe.GetDatabase().FindPackage(&types.Package{Name: "baz", Category: "test"})
+			Expect(err).ToNot(HaveOccurred())
+			Expect(len(baz.GetRequires())).To(Equal(1))
+			Expect(baz.GetRequires()[0].Name).To(Equal("foobar"))
+		})
+	})
+})