| 20 | } |
| 21 | |
| 22 | func TestEnvVarValueSource(t *testing.T) { |
| 23 | t.Run("implements ValueSource", func(t *testing.T) { |
| 24 | src := EnvVar("foo") |
| 25 | require.Implements(t, (*ValueSource)(nil), src) |
| 26 | |
| 27 | t.Run("not found", func(t *testing.T) { |
| 28 | t.Setenv("foo", "bar") |
| 29 | |
| 30 | src := EnvVar("foo_1") |
| 31 | _, ok := src.Lookup() |
| 32 | require.False(t, ok) |
| 33 | }) |
| 34 | |
| 35 | t.Run("found", func(t *testing.T) { |
| 36 | t.Setenv("foo", "bar") |
| 37 | |
| 38 | r := require.New(t) |
| 39 | src := EnvVar("foo") |
| 40 | |
| 41 | str, ok := src.Lookup() |
| 42 | r.True(ok) |
| 43 | r.Equal(str, "bar") |
| 44 | }) |
| 45 | }) |
| 46 | |
| 47 | t.Run("implements fmt.Stringer", func(t *testing.T) { |
| 48 | src := EnvVar("foo") |
| 49 | r := require.New(t) |
| 50 | |
| 51 | r.Implements((*fmt.Stringer)(nil), src) |
| 52 | r.Equal("environment variable \"foo\"", src.String()) |
| 53 | }) |
| 54 | |
| 55 | t.Run("implements fmt.GoStringer", func(t *testing.T) { |
| 56 | src := EnvVar("foo") |
| 57 | r := require.New(t) |
| 58 | |
| 59 | r.Implements((*fmt.GoStringer)(nil), src) |
| 60 | r.Equal("&envVarValueSource{Key:\"foo\"}", src.GoString()) |
| 61 | }) |
| 62 | } |
| 63 | |
| 64 | func TestEnvVars(t *testing.T) { |
| 65 | t.Setenv("myfoo", "mybar") |