TER-410 fix t8 generate edge case (#166)

there was an edge case where the t8 generate command was failing for a
specific platform.

the case use to occur specifically when there is a terraform block
that is not linked to a file. and the platform path is an absolute path
not relative path.

this change fixes the issue by skipping such terraform blocks.

src/cli/cmd/generate/cmd_test.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/cldcvr/terrarium/src/pkg/testutils/clitesting"
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestCmd(t *testing.T) {
@@ -22,6 +23,9 @@ func TestCmd(t *testing.T) {
 		},
 	}
 
+	wd, err := os.Getwd()
+	require.NoError(t, err)
+
 	testSetup.RunTests(t, []clitesting.CLITestCase{
 		{
 			Name:     "No components provided",
@@ -107,6 +111,38 @@ func TestCmd(t *testing.T) {
 				return pass
 			},
 		},
+		{
+			Name: "Success (edge case absolute path empty block)",
+			Args: []string{
+				"--platform-dir",
+				path.Clean(path.Join(wd, "../../../../examples/lz/platforms/03-team-env")),
+				"--output-dir",
+				"./testdata/.terrarium",
+				"--app",
+				path.Clean(path.Join(wd, "../../../../examples/lz/requirements/team-aa.yaml")),
+			},
+			ValidateOutput: func(ctx context.Context, t *testing.T, cmdOpts clitesting.CmdOpts, output []byte) bool {
+				pass := assert.Equal(t, "Successfully pulled 8 of 10 terraform blocks at: ./testdata/.terrarium\n", string(output))
+				pass = assertFilesExists(t,
+					"./testdata/.terrarium",
+					[]string{ // shouldExist
+						"app_aa.env.mustache",
+						"bucket.tf",
+						"database.tf",
+						"remote_state.tf",
+						"tr_gen_locals.tf",
+						"variable.tf",
+					},
+					[]string{ // shouldNotExist
+						"dev.tfvars",
+						"prod.tfvars",
+						"staging.tfvars",
+						"terrarium.yaml",
+					},
+				) && pass
+				return pass
+			},
+		},
 		{
 			Name:     "Invalid profile name",
 			Args:     []string{"-p", "../../../../examples/platform/", "-a", "../../../../examples/apps/voting-be", "-a", "../../../../examples/apps/voting-worker", "-o", "./testdata/.terrarium", "-c", "Isle"},

src/cli/cmd/generate/generate.go

@@ -93,7 +93,7 @@ func processBlocks(g platform.Graph, blocks []platform.BlockID, tfModule *tfconf
 		}
 
 		b, found := bID.GetBlock(tfModule)
-		if !found {
+		if !found || b.GetPos().Filename == "" {
 			return nil
 		}
 

src/cli/cmd/generate/generate_test.go

@@ -118,6 +118,14 @@ func Test_updateRelPath(t *testing.T) {
 		args args
 		want string
 	}{
+		{
+			args: args{
+				line:    `  source = "../../modules"`,
+				srcDir:  `/a/b/c`,
+				destDir: `/a/x/y`,
+			},
+			want: `  source = "../../modules"`,
+		},
 		{
 			args: args{
 				line:    `  source = "./../modules"`,