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moby--moby/builder/dockerfile/shell_parser_test.go
Daniel Nephin 2414166e1e Create a new ShellLex struct which provides the expected interface to Builder.
Remove b.escapeToken from builder

Signed-off-by: Daniel Nephin <dnephin@docker.com>
2017-04-26 19:39:16 -04:00

151 lines
3.4 KiB
Go

package dockerfile
import (
"bufio"
"os"
"runtime"
"strings"
"testing"
"github.com/stretchr/testify/assert"
)
func TestShellParser4EnvVars(t *testing.T) {
fn := "envVarTest"
lineCount := 0
file, err := os.Open(fn)
assert.NoError(t, err)
defer file.Close()
shlex := NewShellLex('\\')
scanner := bufio.NewScanner(file)
envs := []string{"PWD=/home", "SHELL=bash", "KOREAN=한국어"}
for scanner.Scan() {
line := scanner.Text()
lineCount++
// 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, "|")
assert.Len(t, words, 3)
platform := strings.TrimSpace(words[0])
source := strings.TrimSpace(words[1])
expected := strings.TrimSpace(words[2])
// Key W=Windows; A=All; U=Unix
if platform != "W" && platform != "A" && platform != "U" {
t.Fatalf("Invalid tag %s at line %d of %s. Must be W, A or U", platform, lineCount, fn)
}
if ((platform == "W" || platform == "A") && runtime.GOOS == "windows") ||
((platform == "U" || platform == "A") && runtime.GOOS != "windows") {
newWord, err := shlex.ProcessWord(source, envs)
if expected == "error" {
assert.Error(t, err)
} else {
assert.NoError(t, err)
assert.Equal(t, newWord, expected)
}
}
}
}
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()
shlex := NewShellLex('\\')
envs := []string{}
scanner := bufio.NewScanner(file)
lineNum := 0
for scanner.Scan() {
line := scanner.Text()
lineNum = lineNum + 1
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'(line %d) - should be exactly one | in: %q", fn, lineNum, line)
}
test := strings.TrimSpace(words[0])
expected := strings.Split(strings.TrimLeft(words[1], " "), ",")
result, err := shlex.ProcessWords(test, envs)
if err != nil {
result = []string{"error"}
}
if len(result) != len(expected) {
t.Fatalf("Error on line %d. %q was suppose to result in %q, but got %q instead", lineNum, test, expected, result)
}
for i, w := range expected {
if w != result[i] {
t.Fatalf("Error on line %d. %q was suppose to result in %q, but got %q instead", lineNum, test, expected, result)
}
}
}
}
func TestGetEnv(t *testing.T) {
sw := &shellWord{envs: nil}
sw.envs = []string{}
if sw.getEnv("foo") != "" {
t.Fatal("2 - 'foo' should map to ''")
}
sw.envs = []string{"foo"}
if sw.getEnv("foo") != "" {
t.Fatal("3 - 'foo' should map to ''")
}
sw.envs = []string{"foo="}
if sw.getEnv("foo") != "" {
t.Fatal("4 - 'foo' should map to ''")
}
sw.envs = []string{"foo=bar"}
if sw.getEnv("foo") != "bar" {
t.Fatal("5 - 'foo' should map to 'bar'")
}
sw.envs = []string{"foo=bar", "car=hat"}
if sw.getEnv("foo") != "bar" {
t.Fatal("6 - 'foo' should map to 'bar'")
}
if sw.getEnv("car") != "hat" {
t.Fatal("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.Fatal("8 - 'car' should map to 'hat'")
}
}