Add fs rm command for dbfs (#433)

## Changes
Please look at the title

## Tests
Integration tests

cmd/fs/rm.go

@@ -0,0 +1,37 @@
+package fs
+
+import (
+	"github.com/databricks/cli/cmd/root"
+	"github.com/databricks/databricks-sdk-go/service/files"
+	"github.com/spf13/cobra"
+)
+
+var rmCmd = &cobra.Command{
+	Use:     "rm PATH",
+	Short:   "Remove files and directories from dbfs.",
+	Long:    `Remove files and directories from dbfs.`,
+	Args:    cobra.ExactArgs(1),
+	PreRunE: root.MustWorkspaceClient,
+
+	RunE: func(cmd *cobra.Command, args []string) error {
+		ctx := cmd.Context()
+		w := root.WorkspaceClient(ctx)
+
+		path, err := resolveDbfsPath(args[0])
+		if err != nil {
+			return err
+		}
+
+		return w.Dbfs.Delete(ctx, files.Delete{
+			Path:      path,
+			Recursive: recursive,
+		})
+	},
+}
+
+var recursive bool
+
+func init() {
+	rmCmd.Flags().BoolVarP(&recursive, "recursive", "r", false, "Recursively delete a non-empty directory.")
+	fsCmd.AddCommand(rmCmd)
+}

internal/rm_test.go

@@ -0,0 +1,146 @@
+package internal
+
+import (
+	"context"
+	"io/fs"
+	"path"
+	"strings"
+	"testing"
+
+	"github.com/databricks/cli/libs/filer"
+	"github.com/databricks/databricks-sdk-go"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestFsRmForFile(t *testing.T) {
+	t.Log(GetEnvOrSkipTest(t, "CLOUD_ENV"))
+
+	ctx := context.Background()
+	w, err := databricks.NewWorkspaceClient()
+	require.NoError(t, err)
+
+	tmpDir := temporaryDbfsDir(t, w)
+
+	f, err := filer.NewDbfsClient(w, tmpDir)
+	require.NoError(t, err)
+
+	// create file to delete
+	err = f.Write(ctx, "hello.txt", strings.NewReader("abc"))
+	require.NoError(t, err)
+
+	// check file was created
+	info, err := f.Stat(ctx, "hello.txt")
+	require.NoError(t, err)
+	require.Equal(t, "hello.txt", info.Name())
+	require.Equal(t, info.IsDir(), false)
+
+	// Run rm command
+	stdout, stderr := RequireSuccessfulRun(t, "fs", "rm", "dbfs:"+path.Join(tmpDir, "hello.txt"))
+	assert.Equal(t, "", stderr.String())
+	assert.Equal(t, "", stdout.String())
+
+	// assert file was deleted
+	_, err = f.Stat(ctx, "hello.txt")
+	assert.ErrorIs(t, err, fs.ErrNotExist)
+}
+
+func TestFsRmForEmptyDirectory(t *testing.T) {
+	t.Log(GetEnvOrSkipTest(t, "CLOUD_ENV"))
+
+	ctx := context.Background()
+	w, err := databricks.NewWorkspaceClient()
+	require.NoError(t, err)
+
+	tmpDir := temporaryDbfsDir(t, w)
+
+	f, err := filer.NewDbfsClient(w, tmpDir)
+	require.NoError(t, err)
+
+	// create directory to delete
+	err = f.Mkdir(ctx, "avacado")
+	require.NoError(t, err)
+
+	// check directory was created
+	info, err := f.Stat(ctx, "avacado")
+	require.NoError(t, err)
+	require.Equal(t, "avacado", info.Name())
+	require.Equal(t, info.IsDir(), true)
+
+	// Run rm command
+	stdout, stderr := RequireSuccessfulRun(t, "fs", "rm", "dbfs:"+path.Join(tmpDir, "avacado"))
+	assert.Equal(t, "", stderr.String())
+	assert.Equal(t, "", stdout.String())
+
+	// assert directory was deleted
+	_, err = f.Stat(ctx, "avacado")
+	assert.ErrorIs(t, err, fs.ErrNotExist)
+}
+
+func TestFsRmForNonEmptyDirectory(t *testing.T) {
+	t.Log(GetEnvOrSkipTest(t, "CLOUD_ENV"))
+
+	ctx := context.Background()
+	w, err := databricks.NewWorkspaceClient()
+	require.NoError(t, err)
+
+	tmpDir := temporaryDbfsDir(t, w)
+
+	f, err := filer.NewDbfsClient(w, tmpDir)
+	require.NoError(t, err)
+
+	// create file in dir
+	err = f.Write(ctx, "avacado/guacamole", strings.NewReader("abc"), filer.CreateParentDirectories)
+	require.NoError(t, err)
+
+	// check file was created
+	info, err := f.Stat(ctx, "avacado/guacamole")
+	require.NoError(t, err)
+	require.Equal(t, "guacamole", info.Name())
+	require.Equal(t, info.IsDir(), false)
+
+	// Run rm command
+	_, _, err = RequireErrorRun(t, "fs", "rm", "dbfs:"+path.Join(tmpDir, "avacado"))
+	assert.ErrorContains(t, err, "Non-recursive delete of non-empty directory")
+}
+
+func TestFsRmForNonExistentFile(t *testing.T) {
+	t.Log(GetEnvOrSkipTest(t, "CLOUD_ENV"))
+
+	// No error is returned on command run
+	stdout, stderr := RequireSuccessfulRun(t, "fs", "rm", "dbfs:/does-not-exist")
+	assert.Equal(t, "", stderr.String())
+	assert.Equal(t, "", stdout.String())
+}
+
+func TestFsRmForNonEmptyDirectoryWithRecursiveFlag(t *testing.T) {
+	t.Log(GetEnvOrSkipTest(t, "CLOUD_ENV"))
+
+	ctx := context.Background()
+	w, err := databricks.NewWorkspaceClient()
+	require.NoError(t, err)
+
+	tmpDir := temporaryDbfsDir(t, w)
+
+	f, err := filer.NewDbfsClient(w, tmpDir)
+	require.NoError(t, err)
+
+	// create file in dir
+	err = f.Write(ctx, "avacado/guacamole", strings.NewReader("abc"), filer.CreateParentDirectories)
+	require.NoError(t, err)
+
+	// check file was created
+	info, err := f.Stat(ctx, "avacado/guacamole")
+	require.NoError(t, err)
+	require.Equal(t, "guacamole", info.Name())
+	require.Equal(t, info.IsDir(), false)
+
+	// Run rm command
+	stdout, stderr := RequireSuccessfulRun(t, "fs", "rm", "dbfs:"+path.Join(tmpDir, "avacado"), "--recursive")
+	assert.Equal(t, "", stderr.String())
+	assert.Equal(t, "", stdout.String())
+
+	// assert directory was deleted
+	_, err = f.Stat(ctx, "avacado")
+	assert.ErrorIs(t, err, fs.ErrNotExist)
+}