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Add unit test
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ben-z committed Feb 17, 2024
1 parent b3b9287 commit 9fa1844
Showing 1 changed file with 115 additions and 0 deletions.
115 changes: 115 additions & 0 deletions util/file_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,8 @@ package util

import (
"errors"
"io"
"io/ioutil"
"os"
"path"
"path/filepath"
Expand All @@ -11,6 +13,7 @@ import (
"fmt"

"github.com/gruntwork-io/terragrunt/test/helpers"
"github.com/sirupsen/logrus"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
Expand Down Expand Up @@ -321,3 +324,115 @@ func TestIncludeInCopy(t *testing.T) {
"Unexpected copy result for file '%s' (should be copied: '%t') - got error: %s", testCase.path, testCase.copyExpected, err)
}
}

func TestCopyLockFile(t *testing.T) {
logger := logrus.New()
logger.Out = io.Discard
loggerEntry := logger.WithFields(logrus.Fields{})

t.Run("SameSourceAndDestination", func(t *testing.T) {
sourceFolder := "/path/to/folder"
destinationFolder := "/path/to/folder"

err := CopyLockFile(sourceFolder, destinationFolder, loggerEntry)
assert.NoError(t, err)
})

t.Run("SourceLockFileDoesNotExist", func(t *testing.T) {
sourceFolder := "/path/to/folder"
destinationFolder := "/path/to/destination"

err := CopyLockFile(sourceFolder, destinationFolder, loggerEntry)
assert.NoError(t, err)
})

t.Run("DestinationLockFileDoesNotExist", func(t *testing.T) {
sourceFolder := t.TempDir()
destinationFolder := t.TempDir()

sourceLockFilePath := filepath.Join(sourceFolder, TerraformLockFile)
destinationLockFilePath := filepath.Join(destinationFolder, TerraformLockFile)

// Create source lock file
err := ioutil.WriteFile(sourceLockFilePath, []byte("lock file contents"), 0644)
require.NoError(t, err)

err = CopyLockFile(sourceFolder, destinationFolder, loggerEntry)
assert.NoError(t, err)

// Verify destination lock file exists
_, err = os.Stat(destinationLockFilePath)
assert.NoError(t, err)

// Verify destination lock file contents
destinationContents, err := ioutil.ReadFile(destinationLockFilePath)
assert.NoError(t, err)
assert.Equal(t, []byte("lock file contents"), destinationContents)

// Clean up
err = os.Remove(sourceLockFilePath)
assert.NoError(t, err)
err = os.Remove(destinationLockFilePath)
assert.NoError(t, err)
})

t.Run("SameContents", func(t *testing.T) {
sourceFolder := t.TempDir()
destinationFolder := t.TempDir()

sourceLockFilePath := filepath.Join(sourceFolder, TerraformLockFile)
destinationLockFilePath := filepath.Join(destinationFolder, TerraformLockFile)

// Create source lock file
err := ioutil.WriteFile(sourceLockFilePath, []byte("lock file contents"), 0644)
require.NoError(t, err)

// Create destination lock file with same contents
err = ioutil.WriteFile(destinationLockFilePath, []byte("lock file contents"), 0644)
require.NoError(t, err)

err = CopyLockFile(sourceFolder, destinationFolder, loggerEntry)
assert.NoError(t, err)

// Verify destination lock file contents remain the same
destinationContents, err := ioutil.ReadFile(destinationLockFilePath)
assert.NoError(t, err)
assert.Equal(t, []byte("lock file contents"), destinationContents)

// Clean up
err = os.Remove(sourceLockFilePath)
assert.NoError(t, err)
err = os.Remove(destinationLockFilePath)
assert.NoError(t, err)
})

t.Run("DifferentContents", func(t *testing.T) {
sourceFolder := t.TempDir()
destinationFolder := t.TempDir()

sourceLockFilePath := filepath.Join(sourceFolder, TerraformLockFile)
destinationLockFilePath := filepath.Join(destinationFolder, TerraformLockFile)

// Create source lock file
err := ioutil.WriteFile(sourceLockFilePath, []byte("lock file contents"), 0644)
require.NoError(t, err)

// Create destination lock file with different contents
err = ioutil.WriteFile(destinationLockFilePath, []byte("different contents"), 0644)
require.NoError(t, err)

err = CopyLockFile(sourceFolder, destinationFolder, loggerEntry)
assert.NoError(t, err)

// Verify destination lock file contents are updated
destinationContents, err := ioutil.ReadFile(destinationLockFilePath)
assert.NoError(t, err)
assert.Equal(t, []byte("lock file contents"), destinationContents)

// Clean up
err = os.Remove(sourceLockFilePath)
assert.NoError(t, err)
err = os.Remove(destinationLockFilePath)
assert.NoError(t, err)
})
}

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