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package parser
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"runtime"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
const testDir = "testfiles"
const negativeTestDir = "testfiles-negative"
const testFileLineInfo = "testfile-line/Dockerfile"
func getDirs(t *testing.T, dir string) []string {
f, err := os.Open(dir)
require.NoError(t, err)
defer f.Close()
dirs, err := f.Readdirnames(0)
require.NoError(t, err)
return dirs
}
func TestParseErrorCases(t *testing.T) {
for _, dir := range getDirs(t, negativeTestDir) {
dockerfile := filepath.Join(negativeTestDir, dir, "Dockerfile")
df, err := os.Open(dockerfile)
require.NoError(t, err, dockerfile)
defer df.Close()
_, err = Parse(df)
assert.Error(t, err, dockerfile)
}
}
func TestParseCases(t *testing.T) {
for _, dir := range getDirs(t, testDir) {
dockerfile := filepath.Join(testDir, dir, "Dockerfile")
resultfile := filepath.Join(testDir, dir, "result")
df, err := os.Open(dockerfile)
require.NoError(t, err, dockerfile)
defer df.Close()
result, err := Parse(df)
require.NoError(t, err, dockerfile)
content, err := ioutil.ReadFile(resultfile)
require.NoError(t, err, resultfile)
if runtime.GOOS == "windows" {
// CRLF --> CR to match Unix behavior
content = bytes.Replace(content, []byte{'\x0d', '\x0a'}, []byte{'\x0a'}, -1)
}
assert.Equal(t, result.AST.Dump()+"\n", string(content), "In "+dockerfile)
}
}
func TestParseWords(t *testing.T) {
tests := []map[string][]string{
{
"input": {"foo"},
"expect": {"foo"},
},
{
"input": {"foo bar"},
"expect": {"foo", "bar"},
},
{
"input": {"foo\\ bar"},
"expect": {"foo\\ bar"},
},
{
"input": {"foo=bar"},
"expect": {"foo=bar"},
},
{
"input": {"foo bar 'abc xyz'"},
"expect": {"foo", "bar", "'abc xyz'"},
},
{
"input": {`foo bar "abc xyz"`},
"expect": {"foo", "bar", `"abc xyz"`},
},
{
"input": {"àöû"},
"expect": {"àöû"},
},
{
"input": {`föo bàr "âbc xÿz"`},
"expect": {"föo", "bàr", `"âbc xÿz"`},
},
}
for _, test := range tests {
words := parseWords(test["input"][0], NewDefaultDirective())
assert.Equal(t, test["expect"], words)
}
}
func TestParseIncludesLineNumbers(t *testing.T) {
df, err := os.Open(testFileLineInfo)
require.NoError(t, err)
defer df.Close()
result, err := Parse(df)
require.NoError(t, err)
ast := result.AST
assert.Equal(t, 5, ast.StartLine)
assert.Equal(t, 31, ast.endLine)
assert.Len(t, ast.Children, 3)
expected := [][]int{
{5, 5},
{11, 12},
{17, 31},
}
for i, child := range ast.Children {
msg := fmt.Sprintf("Child %d", i)
assert.Equal(t, expected[i], []int{child.StartLine, child.endLine}, msg)
}
}
func TestParseWarnsOnEmptyContinutationLine(t *testing.T) {
dockerfile := bytes.NewBufferString(`
FROM alpine:3.6
RUN something \
following \
more
RUN another \
thing
`)
result, err := Parse(dockerfile)
require.NoError(t, err)
warnings := result.Warnings
assert.Len(t, warnings, 3)
assert.Contains(t, warnings[0], "Empty continuation line found in")
assert.Contains(t, warnings[0], "RUN something following more")
assert.Contains(t, warnings[1], "RUN another thing")
assert.Contains(t, warnings[2], "will become errors in a future release")
}
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