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decr_test.go
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decr_test.go
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package kvs
import (
"os"
"testing"
"time"
)
func TestKvs_Decr(t *testing.T) {
db, err := open(t.Name(), "", 2*time.Minute)
if err != nil {
t.Fatalf(err.Error())
}
t.Logf("db created.")
k, v := "age", "12"
db.Set(k, v)
t.Logf("Key-value pair is set.")
t.Logf("%s: %s", k, v)
val, err := db.Decr(k)
if err != nil {
t.Fatalf(err.Error())
}
if val != "11" {
t.Errorf("decremented value is wrong: %s", val)
}
t.Logf("value is decremented.")
t.Logf("%s: %s", k, val)
err = db.Close()
if err != nil {
t.Fatalf(err.Error())
}
t.Logf("db closed.")
err = os.RemoveAll(db.dir)
if err != nil {
t.Fatalf(err.Error())
}
t.Logf("temp db removed.")
}
func TestKvs_DecrStr(t *testing.T) {
db, err := open(t.Name(), "", 2*time.Minute)
if err != nil {
t.Fatalf(err.Error())
}
t.Logf("db created.")
k, v := "foo", "bar"
db.Set(k, v)
t.Logf("Key-value pair is set.")
t.Logf("%s: %s", k, v)
_, err = db.Decr(k)
if err == nil {
t.Fatalf("error expected, but nil got.")
}
t.Logf("value could not decremented. it is string.")
err = db.Close()
if err != nil {
t.Fatalf(err.Error())
}
t.Logf("db closed.")
err = os.RemoveAll(db.dir)
if err != nil {
t.Fatalf(err.Error())
}
t.Logf("temp db removed.")
}
func TestKvs_DecrBy(t *testing.T) {
db, err := open(t.Name(), "", 2*time.Minute)
if err != nil {
t.Fatalf(err.Error())
}
t.Logf("db created.")
k, v, i := "age", "12", 3
db.Set(k, v)
t.Logf("Key-value pair is set.")
t.Logf("%s: %s", k, v)
val, err := db.DecrBy(k, i)
if err != nil {
t.Fatalf(err.Error())
}
if val != "9" {
t.Errorf("decremented value is wrong: %s", val)
}
t.Logf("value is decremented.")
t.Logf("%s: %s", k, val)
err = db.Close()
if err != nil {
t.Fatalf(err.Error())
}
t.Logf("db closed.")
err = os.RemoveAll(db.dir)
if err != nil {
t.Fatalf(err.Error())
}
t.Logf("temp db removed.")
}
func TestKvs_DecrByStr(t *testing.T) {
db, err := open(t.Name(), "", 2*time.Minute)
if err != nil {
t.Fatalf(err.Error())
}
t.Logf("db created.")
k, v := "foo", "bar"
db.Set(k, v)
t.Logf("Key-value pair is set.")
t.Logf("%s: %s", k, v)
_, err = db.DecrBy(k, 3)
if err == nil {
t.Fatalf("error expected, but nil got.")
}
t.Logf("value could not decremented. it is string.")
err = db.Close()
if err != nil {
t.Fatalf(err.Error())
}
t.Logf("db closed.")
err = os.RemoveAll(db.dir)
if err != nil {
t.Fatalf(err.Error())
}
t.Logf("temp db removed.")
}