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Copy pathminify_test.go
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144 lines (128 loc) · 5.08 KB
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package minify // import "github.com/tdewolff/minify"
import (
"bytes"
"errors"
"fmt"
"io"
"mime"
"os"
"os/exec"
"testing"
"github.com/stretchr/testify/assert"
)
var errDummy = errors.New("dummy error")
// from os/exec/exec_test.go
func helperCommand(t *testing.T, s ...string) *exec.Cmd {
cs := []string{"-test.run=TestHelperProcess", "--"}
cs = append(cs, s...)
cmd := exec.Command(os.Args[0], cs...)
cmd.Env = []string{"GO_WANT_HELPER_PROCESS=1"}
return cmd
}
func helperMinifyString(t *testing.T, m Minify, mediatype string) string {
s, err := String(m, mediatype, "")
assert.Nil(t, err, "minifier must not return error")
return s
}
////////////////////////////////////////////////////////////////
var m = Minify(map[string]Func{
"dummy/copy": func(m Minifier, mediatype string, w io.Writer, r io.Reader) error {
io.Copy(w, r)
return nil
},
"dummy/nil": func(m Minifier, mediatype string, w io.Writer, r io.Reader) error {
return nil
},
"dummy/err": func(m Minifier, mediatype string, w io.Writer, r io.Reader) error {
return errDummy
},
"dummy/charset": func(m Minifier, mediatype string, w io.Writer, r io.Reader) error {
_, param, _ := mime.ParseMediaType(mediatype)
w.Write([]byte(param["charset"]))
return nil
},
"dummy/params": func(m Minifier, mediatype string, w io.Writer, r io.Reader) error {
_, param, _ := mime.ParseMediaType(mediatype)
return m.Minify(param["type"]+"/"+param["sub"], w, r)
},
"type/sub": func(m Minifier, mediatype string, w io.Writer, r io.Reader) error {
w.Write([]byte("type/sub"))
return nil
},
"type/*": func(m Minifier, mediatype string, w io.Writer, r io.Reader) error {
w.Write([]byte("type/*"))
return nil
},
"*/*": func(m Minifier, mediatype string, w io.Writer, r io.Reader) error {
w.Write([]byte("*/*"))
return nil
}})
func TestMinify(t *testing.T) {
assert.Equal(t, ErrNotExist, m.Minify("?", nil, nil), "must return ErrNotExist when minifier doesn't exist")
assert.Nil(t, m.Minify("dummy/nil", nil, nil), "must return nil for dummy/nil")
assert.Equal(t, errDummy, m.Minify("dummy/err", nil, nil), "must return errDummy for dummy/err")
b := []byte("test")
out, err := Bytes(m, "dummy/nil", b)
assert.Nil(t, err, "must not return error for dummy/nil")
assert.Equal(t, []byte{}, out, "must return empty byte array for dummy/nil")
out, err = Bytes(m, "?", b)
assert.Equal(t, ErrNotExist, err, "must return ErrNotExist when minifier doesn't exist")
assert.Equal(t, b, out, "must return input byte array when minifier doesn't exist")
s := "test"
out2, err := String(m, "dummy/nil", s)
assert.Nil(t, err, "must not return error for dummy/nil")
assert.Equal(t, "", out2, "must return empty string for dummy/nil")
out2, err = String(m, "?", s)
assert.Equal(t, ErrNotExist, err, "must return ErrNotExist when minifier doesn't exist")
assert.Equal(t, s, out2, "must return input string when minifier doesn't exist")
}
func TestAdd(t *testing.T) {
m := New()
w := &bytes.Buffer{}
r := bytes.NewBufferString("test")
m.AddFunc("dummy/err", func(m Minifier, mediatype string, w io.Writer, r io.Reader) error {
return errDummy
})
assert.Equal(t, errDummy, m.Minify("dummy/err", nil, nil), "must return errDummy for dummy/err")
assert.Nil(t, m.AddCmd("dummy/copy", helperCommand(t, "dummy/copy")), "must return nil when adding command")
assert.Nil(t, m.Minify("dummy/copy", w, r), "must return nil for dummy/copy command")
assert.Equal(t, "test", w.String(), "must return input string for dummy/copy command")
assert.Nil(t, m.AddCmd("dummy/err", helperCommand(t, "dummy/err")), "must return nil for dummy/err command")
assert.Equal(t, "exit status 1", m.Minify("dummy/err", w, r).Error(), "must return proper exit status when command encounters error")
}
func TestWildcard(t *testing.T) {
assert.Equal(t, "type/sub", helperMinifyString(t, m, "type/sub"), "must return type/sub for type/sub")
assert.Equal(t, "type/*", helperMinifyString(t, m, "type/*"), "must return type/* for type/*")
assert.Equal(t, "*/*", helperMinifyString(t, m, "*/*"), "must return */* for */*")
assert.Equal(t, "type/*", helperMinifyString(t, m, "type/sub2"), "must return type/* for type/sub2")
assert.Equal(t, "*/*", helperMinifyString(t, m, "type2/sub"), "must return */* for type2/sub")
assert.Equal(t, "UTF-8", helperMinifyString(t, m, "dummy/charset;charset=UTF-8"), "must return UTF-8 for dummy/charset;charset=UTF-8")
assert.Equal(t, "UTF-8", helperMinifyString(t, m, "dummy/charset; charset = UTF-8 "), "must return UTF-8 for ' dummy/charset; charset = UTF-8 '")
assert.Equal(t, "type/sub", helperMinifyString(t, m, "dummy/params;type=type;sub=sub"), "must return type/sub for dummy/params;type=type;sub=sub")
}
func TestHelperProcess(*testing.T) {
if os.Getenv("GO_WANT_HELPER_PROCESS") != "1" {
return
}
defer os.Exit(0)
args := os.Args
for len(args) > 0 {
if args[0] == "--" {
args = args[1:]
break
}
args = args[1:]
}
if len(args) == 0 {
fmt.Fprintf(os.Stderr, "No command\n")
os.Exit(2)
}
cmd, args := args[0], args[1:]
switch cmd {
case "dummy/copy":
io.Copy(os.Stdout, os.Stdin)
case "dummy/err":
os.Exit(1)
}
os.Exit(0)
}