constellation/cli/file/file_test.go

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package file
import (
"encoding/json"
"testing"
"github.com/spf13/afero"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestReadJSON(t *testing.T) {
type testContent struct {
First string
Second int
}
someContent := testContent{
First: "first",
Second: 2,
}
jsonContent, err := json.MarshalIndent(someContent, "", "\t")
require.NoError(t, err)
testCases := map[string]struct {
fs afero.Fs
setupFs func(fs *afero.Afero) error
name string
wantContent any
wantErr bool
}{
"successful read": {
fs: afero.NewMemMapFs(),
name: "test/statefile",
setupFs: func(fs *afero.Afero) error { return fs.WriteFile("test/statefile", jsonContent, 0o755) },
wantContent: someContent,
},
"file not existent": {
fs: afero.NewMemMapFs(),
name: "test/statefile",
wantErr: true,
},
"file not json": {
fs: afero.NewMemMapFs(),
name: "test/statefile",
setupFs: func(fs *afero.Afero) error { return fs.WriteFile("test/statefile", []byte{0x1}, 0o755) },
wantErr: true,
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
require := require.New(t)
handler := NewHandler(tc.fs)
if tc.setupFs != nil {
require.NoError(tc.setupFs(handler.fs))
}
resultContent := &testContent{}
if tc.wantErr {
assert.Error(handler.ReadJSON(tc.name, resultContent))
} else {
assert.NoError(handler.ReadJSON(tc.name, resultContent))
assert.Equal(tc.wantContent, *resultContent)
}
})
}
}
func TestWriteJSON(t *testing.T) {
type testContent struct {
First string
Second int
}
someContent := testContent{
First: "first",
Second: 2,
}
notMarshalableContent := struct{ Foo chan int }{Foo: make(chan int)}
testCases := map[string]struct {
fs afero.Fs
setupFs func(af afero.Afero) error
name string
content any
options Option
wantErr bool
}{
"successful write": {
fs: afero.NewMemMapFs(),
name: "test/statefile",
content: someContent,
},
"successful overwrite": {
fs: afero.NewMemMapFs(),
setupFs: func(af afero.Afero) error { return af.WriteFile("test/statefile", []byte{}, 0o644) },
name: "test/statefile",
content: someContent,
options: OptOverwrite,
},
"read only fs": {
fs: afero.NewReadOnlyFs(afero.NewMemMapFs()),
name: "test/statefile",
content: someContent,
wantErr: true,
},
"file already exists": {
fs: afero.NewMemMapFs(),
setupFs: func(af afero.Afero) error { return af.WriteFile("test/statefile", []byte{}, 0o644) },
name: "test/statefile",
content: someContent,
wantErr: true,
},
"marshal error": {
fs: afero.NewMemMapFs(),
name: "test/statefile",
content: notMarshalableContent,
wantErr: true,
},
"mkdirAll works": {
fs: afero.NewMemMapFs(),
name: "test/statefile",
content: someContent,
options: OptMkdirAll,
},
// TODO: add tests for mkdirAll actually creating the necessary folders when https://github.com/spf13/afero/issues/270 is fixed.
// Currently, MemMapFs will create files in nonexistent directories due to a bug in afero,
// making it impossible to test the actual behavior of the mkdirAll parameter.
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
require := require.New(t)
handler := NewHandler(tc.fs)
if tc.setupFs != nil {
require.NoError(tc.setupFs(afero.Afero{Fs: tc.fs}))
}
if tc.wantErr {
assert.Error(handler.WriteJSON(tc.name, tc.content, tc.options))
} else {
assert.NoError(handler.WriteJSON(tc.name, tc.content, tc.options))
resultContent := &testContent{}
assert.NoError(handler.ReadJSON(tc.name, resultContent))
assert.Equal(tc.content, *resultContent)
}
})
}
}
func TestRemove(t *testing.T) {
assert := assert.New(t)
require := require.New(t)
fs := afero.NewMemMapFs()
handler := NewHandler(fs)
aferoHelper := afero.Afero{Fs: fs}
require.NoError(aferoHelper.WriteFile("a", []byte{0xa}, 0o644))
require.NoError(aferoHelper.WriteFile("b", []byte{0xb}, 0o644))
require.NoError(aferoHelper.WriteFile("c", []byte{0xc}, 0o644))
assert.NoError(handler.Remove("a"))
assert.NoError(handler.Remove("b"))
assert.NoError(handler.Remove("c"))
_, err := handler.fs.Stat("a")
assert.ErrorIs(err, afero.ErrFileNotFound)
_, err = handler.fs.Stat("b")
assert.ErrorIs(err, afero.ErrFileNotFound)
_, err = handler.fs.Stat("c")
assert.ErrorIs(err, afero.ErrFileNotFound)
assert.Error(handler.Remove("d"))
}