mirror of https://github.com/grafana/grafana.git
100 lines
2.5 KiB
Go
100 lines
2.5 KiB
Go
package setting
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import (
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"errors"
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"fmt"
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"io/ioutil"
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"math/rand"
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"os"
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"testing"
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"github.com/stretchr/testify/require"
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"github.com/stretchr/testify/assert"
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)
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func TestExpandVar_EnvSuccessful(t *testing.T) {
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const key = "GF_TEST_SETTING_EXPANDER_ENV"
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const expected = "aurora borealis"
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err := os.Setenv(key, expected)
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require.NoError(t, err)
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// expanded format
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{
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got, err := ExpandVar(fmt.Sprintf("$__env{%s}", key))
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assert.NoError(t, err)
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assert.Equal(t, expected, got)
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}
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// short format
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{
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got, err := ExpandVar(fmt.Sprintf("${%s}", key))
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assert.NoError(t, err)
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assert.Equal(t, expected, got)
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}
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}
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func TestExpandVar_FileSuccessful(t *testing.T) {
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f, err := ioutil.TempFile(os.TempDir(), "file expansion *")
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require.NoError(t, err)
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file := f.Name()
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defer func() {
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err := os.Remove(file)
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require.NoError(t, err)
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}()
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_, err = f.WriteString("hello, world")
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require.NoError(t, err)
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err = f.Close()
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require.NoError(t, err)
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got, err := ExpandVar(fmt.Sprintf("$__file{%s}", file))
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assert.NoError(t, err)
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assert.Equal(t, "hello, world", got)
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}
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func TestExpandVar_FileDoesNotExist(t *testing.T) {
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got, err := ExpandVar(
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fmt.Sprintf("$__file{%s%sthisisnotarealfile_%d}",
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os.TempDir(),
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string(os.PathSeparator),
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rand.Int63()),
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)
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assert.Error(t, err)
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assert.True(t, errors.Is(err, os.ErrNotExist))
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assert.Empty(t, got)
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}
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func TestExpanderRegex(t *testing.T) {
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tests := map[string][][]string{
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// we should not expand variables where there are none
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"smoketest": {},
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"Pa$$word{0}": {},
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"$_almost{but not quite a variable}": {},
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// args are required
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"$__file{}": {},
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// base cases
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"${ENV}": {{"", "ENV"}},
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"$__env{ENV}": {{"__env", "ENV"}},
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"$__file{/dev/null}": {{"__file", "/dev/null"}},
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"$__vault{item}": {{"__vault", "item"}},
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// contains a space in the argument
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"$__file{C:\\Program Files\\grafana\\something}": {{"__file", "C:\\Program Files\\grafana\\something"}},
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// complex cases
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"get variable from $__env{ENV}ironment": {{"__env", "ENV"}},
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"$__env{VAR1} $__file{/var/lib/grafana/secrets/var1}": {{"__env", "VAR1"}, {"__file", "/var/lib/grafana/secrets/var1"}},
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"$__env{$__file{this is invalid}}": {{"__env", "$__file{this is invalid"}},
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}
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for input, expected := range tests {
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output := regex.FindAllStringSubmatch(input, -1)
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require.Len(t, output, len(expected))
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for i, variable := range output {
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assert.Equal(t, expected[i], variable[1:])
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}
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}
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}
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