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moby--moby/builder/dockerfile/shell_parser_test.go
Doug Davis 6990f8c616 Allow for env vars to have spaces in some cases
Closes #17781

This allows for env vars in EXPOSE to be parsed for spaces so that each
"word" is then treated independently instead of as a single word/arg.

Signed-off-by: Doug Davis <dug@us.ibm.com>
2015-11-09 12:42:56 -08:00

143 lines
2.9 KiB
Go

package dockerfile
import (
"bufio"
"os"
"strings"
"testing"
)
func TestShellParser4EnvVars(t *testing.T) {
fn := "envVarTest"
file, err := os.Open(fn)
if err != nil {
t.Fatalf("Can't open '%s': %s", err, fn)
}
defer file.Close()
scanner := bufio.NewScanner(file)
envs := []string{"PWD=/home", "SHELL=bash", "KOREAN=한국어"}
for scanner.Scan() {
line := scanner.Text()
// Trim comments and blank lines
i := strings.Index(line, "#")
if i >= 0 {
line = line[:i]
}
line = strings.TrimSpace(line)
if line == "" {
continue
}
words := strings.Split(line, "|")
if len(words) != 2 {
t.Fatalf("Error in '%s' - should be exactly one | in:%q", fn, line)
}
words[0] = strings.TrimSpace(words[0])
words[1] = strings.TrimSpace(words[1])
newWord, err := ProcessWord(words[0], envs)
if err != nil {
newWord = "error"
}
if newWord != words[1] {
t.Fatalf("Error. Src: %s Calc: %s Expected: %s", words[0], newWord, words[1])
}
}
}
func TestShellParser4Words(t *testing.T) {
fn := "wordsTest"
file, err := os.Open(fn)
if err != nil {
t.Fatalf("Can't open '%s': %s", err, fn)
}
defer file.Close()
envs := []string{}
scanner := bufio.NewScanner(file)
for scanner.Scan() {
line := scanner.Text()
if strings.HasPrefix(line, "#") {
continue
}
if strings.HasPrefix(line, "ENV ") {
line = strings.TrimLeft(line[3:], " ")
envs = append(envs, line)
continue
}
words := strings.Split(line, "|")
if len(words) != 2 {
t.Fatalf("Error in '%s' - should be exactly one | in: %q", fn, line)
}
test := strings.TrimSpace(words[0])
expected := strings.Split(strings.TrimLeft(words[1], " "), ",")
result, err := ProcessWords(test, envs)
if err != nil {
result = []string{"error"}
}
if len(result) != len(expected) {
t.Fatalf("Error. %q was suppose to result in %q, but got %q instead", test, expected, result)
}
for i, w := range expected {
if w != result[i] {
t.Fatalf("Error. %q was suppose to result in %q, but got %q instead", test, expected, result)
}
}
}
}
func TestGetEnv(t *testing.T) {
sw := &shellWord{
word: "",
envs: nil,
pos: 0,
}
sw.envs = []string{}
if sw.getEnv("foo") != "" {
t.Fatalf("2 - 'foo' should map to ''")
}
sw.envs = []string{"foo"}
if sw.getEnv("foo") != "" {
t.Fatalf("3 - 'foo' should map to ''")
}
sw.envs = []string{"foo="}
if sw.getEnv("foo") != "" {
t.Fatalf("4 - 'foo' should map to ''")
}
sw.envs = []string{"foo=bar"}
if sw.getEnv("foo") != "bar" {
t.Fatalf("5 - 'foo' should map to 'bar'")
}
sw.envs = []string{"foo=bar", "car=hat"}
if sw.getEnv("foo") != "bar" {
t.Fatalf("6 - 'foo' should map to 'bar'")
}
if sw.getEnv("car") != "hat" {
t.Fatalf("7 - 'car' should map to 'hat'")
}
// Make sure we grab the first 'car' in the list
sw.envs = []string{"foo=bar", "car=hat", "car=bike"}
if sw.getEnv("car") != "hat" {
t.Fatalf("8 - 'car' should map to 'hat'")
}
}