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|
package tblfmt
import (
"bytes"
"fmt"
"reflect"
"regexp"
"strconv"
"strings"
"testing"
// _ "github.com/lib/pq"
"github.com/xo/tblfmt/internal"
"github.com/xo/tblfmt/testdata"
)
func TestNewCrosstabView(t *testing.T) {
tests := loadViewTests(t, "crosstab")
for i, test := range tests {
view, err := NewCrosstabView(test.Rset(), WithParams(test.params...))
if err != nil {
t.Fatalf("test %d expected no error, got: %v", i, err)
}
checkView(t, i, test, view)
}
}
/*
func TestNewCrosstabView_psql(t *testing.T) {
db, err := sql.Open("postgres", "postgres://postgres:P4ssw0rd@localhost")
if err != nil {
t.Fatal(err)
}
tests := loadViewTests(t, "crosstab")
for i, test := range tests {
resultSet, err := db.Query(test.PsqlQuery())
if err != nil {
t.Fatal(err)
}
view, err := NewCrosstabView(resultSet, WithParams(test.params...))
if err != nil {
t.Fatalf("test %d expected no error, got: %v", i, err)
}
checkView(t, i, test, view)
}
}
*/
func checkView(t *testing.T, testNum int, test viewTest, view ResultSet) {
cols, err := view.Columns()
if err != nil {
t.Fatalf("test %d expected no error, got: %v", testNum, err)
}
if !reflect.DeepEqual(cols, test.expCols) {
t.Errorf("test %d expected columns to be %v, got: %v", testNum, test.expCols, cols)
}
clen := len(cols)
var vals [][]any
for view.Next() {
r := make([]any, clen)
for i := range clen {
r[i] = new(any)
}
if err := view.Scan(r...); err != nil {
t.Fatalf("test %d expected no error, got: %v", testNum, err)
}
vals = append(vals, r)
}
if err := view.Err(); err != nil {
t.Fatalf("test %d expected no error, got: %v", testNum, err)
}
// log.Printf(">>> test.expVals: %+v", test.expVals)
if len(vals) != len(test.expVals) {
t.Fatalf("test %d expected len(vals) == len(test.expVals): %d != %d", testNum, len(vals), len(test.expVals))
}
for i := 0; i < len(test.expVals); i++ {
row := make([]any, len(vals[i]))
for j := 0; j < len(vals[i]); j++ {
row[j] = *(vals[i][j].(*any))
}
rs := fmt.Sprintf("%v", row)
es := fmt.Sprintf("%v", test.expVals[i])
if rs != es {
t.Errorf("test %d expected row %d to match result\ngot: %v\nexp: %v", testNum, i, row, test.expVals[i])
}
}
}
func loadViewTests(t *testing.T, name string) []viewTest {
buf, err := testdata.Testdata.ReadFile(name + ".txt")
if err != nil {
t.Fatal(err)
}
var tests []viewTest
for _, b := range bytes.Split(buf, []byte("\n\n")) {
z := bytes.Split(b, []byte("--\n"))
if len(z) != 3 {
t.Fatalf("t should be 3, got: %d", len(z))
}
s := strings.Split(string(z[0]), ` \crosstabview`)
if len(s) != 2 {
t.Fatalf("s should be len 2, got: %d", len(s))
}
cols, vals, err := parseViewTest(z[1])
if err != nil {
t.Fatalf("expected no error, got: %v", err)
}
expCols, expVals, err := parseViewTest(z[2])
if err != nil {
t.Fatalf("expected no error, got: %v", err)
}
tests = append(tests, viewTest{
q: strings.TrimSpace(string(z[0])),
params: strings.Split(strings.TrimSpace(s[1]), " "),
cols: cols,
vals: vals,
expCols: expCols,
expVals: expVals,
})
}
return tests
}
type viewTest struct {
q string
params []string
cols []string
vals [][]any
expCols []string
expVals [][]any
}
func (test viewTest) Rset() *internal.RS {
return internal.New(test.cols, test.vals)
}
var azRE = regexp.MustCompile(`[^0-9\-]`)
func (test viewTest) PsqlQuery() string {
var vals []string
for _, v := range test.vals {
var z []string
for _, x := range v {
s := fmt.Sprintf("%v", x)
if azRE.MatchString(s) {
s = "'" + s + "'"
}
z = append(z, s)
}
vals = append(vals, "("+strings.Join(z, ",")+")")
}
return fmt.Sprintf(`select * from (values %s) as t (%s)`, strings.Join(vals, ", "), strings.Join(test.cols, ", "))
}
func parseViewTest(buf []byte) ([]string, [][]any, error) {
lines := strings.Split(strings.TrimSpace(string(buf)), "\n")
cols := strings.Split(lines[0], "|")
var vals [][]any
for _, line := range lines[1:] {
var row []any
for _, c := range strings.Split(line, "|") {
switch i, err := strconv.Atoi(c); {
case err == nil:
row = append(row, i)
case c == "":
row = append(row, nil)
default:
row = append(row, c)
}
}
vals = append(vals, row)
}
return cols, vals, nil
}
|
