terraform/config/module/versions_test.go

package module

import (
	"testing"

	"github.com/hashicorp/terraform/registry/response"
)

func TestNewestModuleVersion(t *testing.T) {
	mpv := &response.ModuleProviderVersions{
		Source: "registry/test/module",
		Versions: []*response.ModuleVersion{
			{Version: "0.0.4"},
			{Version: "0.3.1"},
			{Version: "2.0.1"},
			{Version: "1.2.0"},
		},
	}

	m, err := newestVersion(mpv.Versions, "")
	if err != nil {
		t.Fatal(err)
	}

	expected := "2.0.1"
	if m.Version != expected {
		t.Fatalf("expected version %q, got %q", expected, m.Version)
	}

	// now with a constraint
	m, err = newestVersion(mpv.Versions, "~>1.0")
	if err != nil {
		t.Fatal(err)
	}

	expected = "1.2.0"
	if m.Version != expected {
		t.Fatalf("expected version %q, got %q", expected, m.Version)
	}
}

func TestNewestInvalidModuleVersion(t *testing.T) {
	mpv := &response.ModuleProviderVersions{
		Source: "registry/test/module",
		Versions: []*response.ModuleVersion{
			{Version: "WTF"},
			{Version: "2.0.1"},
		},
	}

	m, err := newestVersion(mpv.Versions, "")
	if err != nil {
		t.Fatal(err)
	}

	expected := "2.0.1"
	if m.Version != expected {
		t.Fatalf("expected version %q, got %q", expected, m.Version)
	}
}

func TestNewestModulesWithMetadata(t *testing.T) {
	mpv := &response.ModuleProviderVersions{
		Source: "registry/test/module",
		Versions: []*response.ModuleVersion{
			{Version: "0.9.0"},
			{Version: "0.9.0+def"},
			{Version: "0.9.0+abc"},
			{Version: "0.9.0+xyz"},
		},
	}

	// with metadata and explicit version request
	expected := "0.9.0+def"
	m, _ := newestVersion(mpv.Versions, "=0.9.0+def")
	if m.Version != expected {
		t.Fatalf("expected version %q, got %q", expected, m.Version)
	}

	// respect explicit equality, but >/</~, or metadata in multiple constraints, will give an error
	_, err := newestVersion(mpv.Versions, "~>0.9.0+abc")
	if err == nil {
		t.Fatalf("expected an error, but did not get one")
	}

	_, err = newestVersion(mpv.Versions, ">0.8.0+abc, <1.0.0")
	if err == nil {
		t.Fatalf("expected an error, but did not get one")
	}
}