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package data
import (
"context"
"io/fs"
"testing"
"testing/fstest"
"github.com/hairyhenderson/gomplate/v4/internal/datafs"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestReadFile(t *testing.T) {
ctx := context.Background()
content := []byte(`hello world`)
fsys := datafs.WrapWdFS(fstest.MapFS{
"tmp": {Mode: fs.ModeDir | 0o777},
"tmp/foo": {Data: content},
"tmp/partial": {Mode: fs.ModeDir | 0o777},
"tmp/partial/foo.txt": {Data: content},
"tmp/partial/bar.txt": {},
"tmp/partial/baz.txt": {},
})
source := &Source{Alias: "foo", URL: mustParseURL("file:///tmp/foo")}
source.fs = fsys
actual, err := readFile(ctx, source)
require.NoError(t, err)
assert.Equal(t, content, actual)
source = &Source{Alias: "bogus", URL: mustParseURL("file:///bogus")}
source.fs = fsys
_, err = readFile(ctx, source)
assert.Error(t, err)
source = &Source{Alias: "partial", URL: mustParseURL("file:///tmp/partial")}
source.fs = fsys
actual, err = readFile(ctx, source, "foo.txt")
require.NoError(t, err)
assert.Equal(t, content, actual)
source = &Source{Alias: "dir", URL: mustParseURL("file:///tmp/partial/")}
source.fs = fsys
actual, err = readFile(ctx, source)
require.NoError(t, err)
assert.Equal(t, []byte(`["bar.txt","baz.txt","foo.txt"]`), actual)
source = &Source{Alias: "dir", URL: mustParseURL("file:///tmp/partial/?type=application/json")}
source.fs = fsys
actual, err = readFile(ctx, source)
require.NoError(t, err)
assert.Equal(t, []byte(`["bar.txt","baz.txt","foo.txt"]`), actual)
mime, err := source.mimeType("")
require.NoError(t, err)
assert.Equal(t, "application/json", mime)
source = &Source{Alias: "dir", URL: mustParseURL("file:///tmp/partial/?type=application/json")}
source.fs = fsys
actual, err = readFile(ctx, source, "foo.txt")
require.NoError(t, err)
assert.Equal(t, content, actual)
mime, err = source.mimeType("")
require.NoError(t, err)
assert.Equal(t, "application/json", mime)
}
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