Update `testutil` helpers to return path (#1383)

## Changes

I spotted a few call sites where the path of a test file was synthesized
multiple times. It is easier to capture the path as a variable and reuse
it.

bundle/deploy/state_pull_test.go

@@ -6,7 +6,6 @@ import (
 	"encoding/json"
 	"io"
 	"os"
-	"path/filepath"
 	"testing"
 
 	"github.com/databricks/cli/bundle"
@@ -77,11 +76,11 @@ func testStatePull(t *testing.T, opts statePullOpts) {
 	ctx := context.Background()
 
 	for _, file := range opts.localFiles {
-		testutil.Touch(t, filepath.Join(b.RootPath, "bar"), file)
+		testutil.Touch(t, b.RootPath, "bar", file)
 	}
 
 	for _, file := range opts.localNotebooks {
-		testutil.TouchNotebook(t, filepath.Join(b.RootPath, "bar"), file)
+		testutil.TouchNotebook(t, b.RootPath, "bar", file)
 	}
 
 	if opts.withExistingSnapshot {

bundle/deploy/terraform/init_test.go

@@ -399,7 +399,7 @@ func TestGetEnvVarWithMatchingVersion(t *testing.T) {
 	versionVarName := "FOO_VERSION"
 
 	tmp := t.TempDir()
-	testutil.Touch(t, tmp, "bar")
+	file := testutil.Touch(t, tmp, "bar")
 
 	var tc = []struct {
 		envValue       string
@@ -408,19 +408,19 @@ func TestGetEnvVarWithMatchingVersion(t *testing.T) {
 		expected       string
 	}{
 		{
-			envValue:       filepath.Join(tmp, "bar"),
+			envValue:       file,
 			versionValue:   "1.2.3",
 			currentVersion: "1.2.3",
-			expected:       filepath.Join(tmp, "bar"),
+			expected:       file,
 		},
 		{
-			envValue:       filepath.Join(tmp, "does-not-exist"),
+			envValue:       "does-not-exist",
 			versionValue:   "1.2.3",
 			currentVersion: "1.2.3",
 			expected:       "",
 		},
 		{
-			envValue:       filepath.Join(tmp, "bar"),
+			envValue:       file,
 			versionValue:   "1.2.3",
 			currentVersion: "1.2.4",
 			expected:       "",
@@ -432,10 +432,10 @@ func TestGetEnvVarWithMatchingVersion(t *testing.T) {
 			expected:       "",
 		},
 		{
-			envValue:       filepath.Join(tmp, "bar"),
+			envValue:       file,
 			versionValue:   "",
 			currentVersion: "1.2.3",
-			expected:       filepath.Join(tmp, "bar"),
+			expected:       file,
 		},
 	}
 

internal/testutil/helpers.go

@@ -1,26 +0,0 @@
-package testutil
-
-import (
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TouchNotebook(t *testing.T, path, file string) {
-	os.MkdirAll(path, 0755)
-	f, err := os.Create(filepath.Join(path, file))
-	require.NoError(t, err)
-
-	err = os.WriteFile(filepath.Join(path, file), []byte("# Databricks notebook source"), 0644)
-	require.NoError(t, err)
-	f.Close()
-}
-
-func Touch(t *testing.T, path, file string) {
-	os.MkdirAll(path, 0755)
-	f, err := os.Create(filepath.Join(path, file))
-	require.NoError(t, err)
-	f.Close()
-}

internal/testutil/touch.go

@@ -0,0 +1,26 @@
+package testutil
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TouchNotebook(t *testing.T, elems ...string) string {
+	path := filepath.Join(elems...)
+	os.MkdirAll(filepath.Dir(path), 0755)
+	err := os.WriteFile(path, []byte("# Databricks notebook source"), 0644)
+	require.NoError(t, err)
+	return path
+}
+
+func Touch(t *testing.T, elems ...string) string {
+	path := filepath.Join(elems...)
+	os.MkdirAll(filepath.Dir(path), 0755)
+	f, err := os.Create(path)
+	require.NoError(t, err)
+	f.Close()
+	return path
+}

libs/fileset/file_test.go

@@ -24,16 +24,20 @@ func TestSourceFileIsNotNotebook(t *testing.T) {
 
 func TestUnknownFileDetectsNotebook(t *testing.T) {
 	tmpDir := t.TempDir()
-	testutil.Touch(t, tmpDir, "test.py")
-	testutil.TouchNotebook(t, tmpDir, "notebook.py")
 
-	f := NewFile(nil, filepath.Join(tmpDir, "test.py"), "test.py")
+	t.Run("file", func(t *testing.T) {
+		path := testutil.Touch(t, tmpDir, "test.py")
+		f := NewFile(nil, path, filepath.Base(path))
 		isNotebook, err := f.IsNotebook()
 		require.NoError(t, err)
 		require.False(t, isNotebook)
+	})
 
-	f = NewFile(nil, filepath.Join(tmpDir, "notebook.py"), "notebook.py")
-	isNotebook, err = f.IsNotebook()
+	t.Run("notebook", func(t *testing.T) {
+		path := testutil.TouchNotebook(t, tmpDir, "notebook.py")
+		f := NewFile(nil, path, filepath.Base(path))
+		isNotebook, err := f.IsNotebook()
 		require.NoError(t, err)
 		require.True(t, isNotebook)
+	})
 }