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Add tests for root.go
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1 changed files with 99 additions and 0 deletions
99
config/setup/root_test.go
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99
config/setup/root_test.go
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package setup
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"strings"
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"testing"
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)
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func TestRoot(t *testing.T) {
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// Predefined error substrings
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parseErrContent := "Parse error:"
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unableToAccessErroContent := "Unable to access root path"
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existingDirPath, err := getTempDirPath()
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if err != nil {
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t.Errorf("BeforeTest: Failed to find an existing directory for testing! Error was: %v", err)
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}
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nonExistingDir := filepath.Join(existingDirPath, "highly_unlikely_to_exist_dir")
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existingFile, err := ioutil.TempFile("", "root_test")
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if err != nil {
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t.Errorf("BeforeTest: Failed to create temp file for testing! Error was: %v", err)
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}
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defer os.Remove(existingFile.Name())
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unaccessiblePath := filepath.Join(existingFile.Name(), "some_name")
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tests := []struct {
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input string
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shouldErr bool
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expectedRoot string // expected root, set to the controller. Empty for negative cases.
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expectedErrContent string // substring from the expected error. Empty for positive cases.
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}{
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// positive
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{
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fmt.Sprintf(`root %s`, nonExistingDir), false, nonExistingDir, "",
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},
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{
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fmt.Sprintf(`root %s`, existingDirPath), false, existingDirPath, "",
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},
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// negative
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{
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`root `, true, "", parseErrContent,
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},
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{
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fmt.Sprintf(`root %s`, unaccessiblePath), true, "", unableToAccessErroContent,
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},
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{
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fmt.Sprintf(`root {
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%s
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}`, existingDirPath), true, "", parseErrContent,
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},
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}
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for i, test := range tests {
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c := NewTestController(test.input)
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mid, err := Root(c)
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if test.shouldErr && err == nil {
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t.Errorf("Test %d: Expected error but found nil for input %s", i, test.input)
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}
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if err != nil {
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if !test.shouldErr {
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t.Errorf("Test %d: Expected no error but found one for input %s. Error was: %v", i, test.input, err)
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}
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if !strings.Contains(err.Error(), test.expectedErrContent) {
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t.Errorf("Test %d: Expected error to contain: %v, found error: %v, input: %s", i, test.expectedErrContent, err, test.input)
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}
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}
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// the Root method always returns a nil middleware
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if mid != nil {
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t.Errorf("Middware, returned from Root() was not nil: %v", mid)
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}
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// check c.Root only if we are in a positive test.
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if !test.shouldErr && test.expectedRoot != c.Root {
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t.Errorf("Root not correctly set for input %s. Expected: %s, actual: %s", test.input, test.expectedRoot, c.Root)
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}
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}
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}
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// getTempDirPath returnes the path to the system temp directory. If it does not exists - an error is returned.
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func getTempDirPath() (string, error) {
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tempDir := os.TempDir()
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_, err := os.Stat(tempDir)
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if err != nil {
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return "", err
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}
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return tempDir, nil
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}
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