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casetester_default.go
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casetester_default.go
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package internal
import (
"fmt"
"net/http"
"github.com/LNMMusic/tester/internal/cases"
)
// NewCaseTesterDefault creates a new case tester.
func NewCaseTesterDefault(dbExecuter cases.DbExecuter, requester cases.Requester, reporter cases.Reporter) *CaseTesterDefault {
return &CaseTesterDefault{
dbExecuter: dbExecuter,
requester: requester,
reporter: reporter,
}
}
// CaseTesterDefault is a tester of cases for http servers.
type CaseTesterDefault struct {
// dbexecuter is the database executer of test cases.
dbExecuter cases.DbExecuter
// requester is the requester of test cases.
requester cases.Requester
// reporter is the reporter of test cases.
reporter cases.Reporter
}
// Test tests the server.
func (t *CaseTesterDefault) Test(c *cases.Case) (err error) {
// arrange
// - database: tear down
defer func() {
e := t.dbExecuter.Exec(c.Database.TearDown...)
if e != nil {
// case of multiple errors:
// - wrap errors in a slice of errors
// > from `{msg string;err error}`
// > to `{msg string;errs []error}`
//
// - notes to take on consideration:
// > generation process:
// > both unrelated multiple errors are wrapped -> []error{ErrDefer, ErrOther}
// > identification process:
// > verification order matters
// > rule #1: accept the idea the last error might not be identified as first with errors.Is
// regardless of the order of the errors, both are unrelated, so is not wrong to identify the first error or the last error
// the full message of the error is still intact
// > advantages: we can use errors.As to get more details about the inner multiple unrelated errors. More programmatic control.
err = fmt.Errorf("%w. %v. %w", ErrTesterDatabase, e, err)
}
}()
// - database: set up
err = t.dbExecuter.Exec(c.Database.SetUp...)
if err != nil {
err = fmt.Errorf("%w. %v", ErrTesterDatabase, err)
return
}
// act
var resp *http.Response
resp, err = t.requester.Do(c)
if err != nil {
err = fmt.Errorf("%w. %v", ErrTesterRequest, err)
return
}
// assert
err = t.reporter.Report(c, resp)
if err != nil {
err = fmt.Errorf("%w. %v", ErrTesterReporter, err)
return
}
return
}