test(builder): Add test coverage for name->image conversion

Adds tests to cover that packages & metapackages are parsed into image
names correctly.

1 files changed, 123 insertions, 0 deletions

diff --git a/tools/nixery/server/builder/builder_test.go b/tools/nixery/server/builder/builder_test.go
new file mode 100644
index 000000000000..3fbe2ab40e23
--- /dev/null
+++ b/tools/nixery/server/builder/builder_test.go
@@ -0,0 +1,123 @@
+// Copyright 2019 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License. You may obtain a copy of
+// the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations under
+// the License.
+package builder
+
+import (
+	"github.com/google/go-cmp/cmp"
+	"github.com/google/go-cmp/cmp/cmpopts"
+	"testing"
+)
+
+var ignoreArch = cmpopts.IgnoreFields(Image{}, "Arch")
+
+func TestImageFromNameSimple(t *testing.T) {
+	image := ImageFromName("hello", "latest")
+	expected := Image{
+		Name: "hello",
+		Tag:  "latest",
+		Packages: []string{
+			"cacert",
+			"hello",
+			"iana-etc",
+		},
+	}
+
+	if diff := cmp.Diff(expected, image, ignoreArch); diff != "" {
+		t.Fatalf("Image(\"hello\", \"latest\") mismatch:\n%s", diff)
+	}
+}
+
+func TestImageFromNameMultiple(t *testing.T) {
+	image := ImageFromName("hello/git/htop", "latest")
+	expected := Image{
+		Name: "git/hello/htop",
+		Tag:  "latest",
+		Packages: []string{
+			"cacert",
+			"git",
+			"hello",
+			"htop",
+			"iana-etc",
+		},
+	}
+
+	if diff := cmp.Diff(expected, image, ignoreArch); diff != "" {
+		t.Fatalf("Image(\"hello/git/htop\", \"latest\") mismatch:\n%s", diff)
+	}
+}
+
+func TestImageFromNameShell(t *testing.T) {
+	image := ImageFromName("shell", "latest")
+	expected := Image{
+		Name: "shell",
+		Tag:  "latest",
+		Packages: []string{
+			"bashInteractive",
+			"cacert",
+			"coreutils",
+			"iana-etc",
+			"moreutils",
+			"nano",
+		},
+	}
+
+	if diff := cmp.Diff(expected, image, ignoreArch); diff != "" {
+		t.Fatalf("Image(\"shell\", \"latest\") mismatch:\n%s", diff)
+	}
+}
+
+func TestImageFromNameShellMultiple(t *testing.T) {
+	image := ImageFromName("shell/htop", "latest")
+	expected := Image{
+		Name: "htop/shell",
+		Tag:  "latest",
+		Packages: []string{
+			"bashInteractive",
+			"cacert",
+			"coreutils",
+			"htop",
+			"iana-etc",
+			"moreutils",
+			"nano",
+		},
+	}
+
+	if diff := cmp.Diff(expected, image, ignoreArch); diff != "" {
+		t.Fatalf("Image(\"shell/htop\", \"latest\") mismatch:\n%s", diff)
+	}
+}
+
+func TestImageFromNameShellArm64(t *testing.T) {
+	image := ImageFromName("shell/arm64", "latest")
+	expected := Image{
+		Name: "arm64/shell",
+		Tag:  "latest",
+		Packages: []string{
+			"bashInteractive",
+			"cacert",
+			"coreutils",
+			"iana-etc",
+			"moreutils",
+			"nano",
+		},
+	}
+
+	if diff := cmp.Diff(expected, image, ignoreArch); diff != "" {
+		t.Fatalf("Image(\"shell/arm64\", \"latest\") mismatch:\n%s", diff)
+	}
+
+	if image.Arch.imageArch != "arm64" {
+		t.Fatal("Image(\"shell/arm64\"): Expected arch arm64")
+	}
+}