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|
package tblfmt
import (
"bytes"
"compress/gzip"
"errors"
"fmt"
"io"
"reflect"
"strings"
"testing"
"github.com/xo/tblfmt/internal"
"github.com/xo/tblfmt/testdata"
)
func TestFromMap(t *testing.T) {
tests := map[string]struct {
name string
opts map[string]string
exp Builder
}{
"empty": {
exp: newErrEncoder,
},
"aligned": {
opts: map[string]string{
"format": "aligned",
},
exp: NewTableEncoder,
},
"unaligned": {
opts: map[string]string{
"format": "unaligned",
},
exp: NewUnalignedEncoder,
},
"csv": {
opts: map[string]string{
"format": "csv",
},
exp: NewCSVEncoder,
},
"any": {
opts: map[string]string{
"format": "aligned",
"border": "2",
"title": "some title",
"expanded": "on",
},
exp: NewExpandedEncoder,
},
}
for n, test := range tests {
t.Run(n, func(t *testing.T) {
builder, _ := FromMap(test.opts)
if reflect.ValueOf(builder).Pointer() != reflect.ValueOf(test.exp).Pointer() {
t.Errorf("invalid builder, expected %T, got %T", test.exp, builder)
}
})
}
}
func TestFromMapFormats(t *testing.T) {
for _, typ := range []string{
"big",
"multi",
"tiny",
"wide",
} {
t.Run(typ, func(t *testing.T) {
t.Parallel()
z, err := testdata.Testdata.ReadFile(typ + ".gz")
if err != nil {
t.Fatalf("expected no error, got: %v", err)
}
r, err := gzip.NewReader(bytes.NewReader(z))
if err != nil {
t.Fatalf("expected no error, got: %v", err)
}
buf, err := io.ReadAll(r)
if err != nil {
t.Fatalf("expected no error, got: %v", err)
}
var i int
loop:
for {
var resultSet ResultSet
switch typ {
case "big":
resultSet = internal.Big(1549508725559526476)
case "multi":
resultSet = internal.Multi()
case "tiny":
resultSet = internal.Tiny()
case "wide":
resultSet = internal.Wide()
}
var optMap map[string]string
var exp []byte
buf, optMap, exp, err = readFromOpts(buf)
switch {
case err != nil && err == io.EOF:
break loop
case err != nil:
t.Fatalf("test %s (%d) expected no error, got: %v", typ, i, err)
}
f, opts := FromMap(optMap)
enc, err := f(resultSet, opts...)
if err != nil {
t.Fatalf("test %s (%d) expected no error, got: %v", typ, i, err)
}
actual := new(bytes.Buffer)
if err := enc.EncodeAll(actual); err != nil {
t.Fatalf("test %s (%d) expected no error, got: %v", typ, i, err)
}
if !bytes.Equal(actual.Bytes(), exp) {
t.Errorf("test %s (%d) actual != exp", typ, i)
}
i++
}
})
}
}
func readFromOpts(buf []byte) ([]byte, map[string]string, []byte, error) {
divider := append([]byte(internal.Divider), newline...)
if len(buf) == 0 {
return nil, nil, nil, io.EOF
}
if !bytes.HasPrefix(buf, divider) {
return nil, nil, nil, errors.New("could not find option start divider")
}
buf = buf[len(divider):]
end := bytes.Index(buf, divider)
if end == -1 {
return nil, nil, nil, errors.New("could not find option middle divider")
}
optMap, err := parseOpts(buf[:end])
if err != nil {
return nil, nil, nil, fmt.Errorf("unable to parse opts: %v", err)
}
buf = buf[end+len(divider):]
if end = bytes.Index(buf, divider); end == -1 {
end = len(buf)
}
return buf[end:], optMap, buf[:end], nil
}
func parseOpts(buf []byte) (map[string]string, error) {
opts := make(map[string]string)
loop:
for {
i := bytes.Index(buf, []byte{'\n'})
if i == -1 {
break loop
}
line := string(bytes.TrimSpace(buf[:i]))
if line == "" {
break loop
}
v := strings.Split(line, ":")
if len(v) != 2 {
return nil, errors.New("missing : in line")
}
opts[strings.TrimSpace(v[0])] = strings.TrimSpace(v[1])
buf = buf[i+1:]
}
if opts["format"] == "" {
return nil, errors.New("format was not defined")
}
if s := opts["format"]; s == "expanded" {
opts["format"] = "aligned"
opts["expanded"] = "on"
}
if s := opts["linestyle"]; strings.HasPrefix(s, "unicode") {
opts["linestyle"] = "unicode"
opts["unicode_border_linestyle"] = "single"
if strings.Contains(s, "double") {
opts["unicode_border_linestyle"] = "double"
}
}
return opts, nil
}
|
