func TestFileReaderOpenNonExistingFile(t *testing.T) {
vanish.File(func(name string) {
assert.Nil(t, os.Remove(name))
fr := jsons.NewFileReader(name)
assert.NotNil(t, fr.Open())
})
}
func TestFileReaderEmptyFile(t *testing.T) {
vanish.File(func(name string) {
fr := jsons.NewFileReader(name)
assert.Nil(t, fr.Open())
var m map[int]int
assert.Equal(t, io.EOF, fr.Next(&m))
assert.Nil(t, fr.Close())
})
}
func TestFileWriterCreateFileIfItDoesntExist(t *testing.T) {
vanish.File(func(name string) {
assert.Nil(t, os.Remove(name))
fw := jsons.NewFileWriter(name)
assert.NotNil(t, fw)
assert.Nil(t, fw.Open())
assert.Nil(t, fw.Close())
_, err := os.Stat(name)
assert.Nil(t, err)
})
}
func TestFileWriterAdd(t *testing.T) {
vanish.File(func(name string) {
fw := jsons.NewFileWriter(name)
assert.NotNil(t, fw)
assert.Nil(t, fw.Open())
assert.Nil(t, fw.Add(map[string]string{"foo": "bar"}))
assert.Nil(t, fw.Add(struct{ A float64 }{A: 42.3}))
assert.Nil(t, fw.Close())
content, err := ioutil.ReadFile(name)
assert.Nil(t, err)
assert.Equal(t, "{\"foo\":\"bar\"}\n{\"A\":42.3}\n", string(content))
})
}
func TestFileReaderNext(t *testing.T) {
vanish.File(func(name string) {
ioutil.WriteFile(name, []byte("{\"foo\": 17}\n"), 0644)
fr := jsons.NewFileReader(name)
assert.Nil(t, fr.Open())
var m map[string]int
assert.Nil(t, fr.Next(&m))
assert.Equal(t, 17, m["foo"])
assert.Equal(t, io.EOF, fr.Next(&m))
assert.Nil(t, fr.Close())
})
}