Function TestEnvVariablePrecedence

cli/options_test.go:345–386

(t *testing.T)

}

func TestEnvVariablePrecedence(t *testing.T) {
	testcases := []struct {
		name     string
		dotEnv   string
		osEnv    []string
		expected types.Mapping
	}{
		{
			"no value set in environment",
			"FOO=foo\nBAR=${FOO}",
			nil,
			types.Mapping{
				"FOO": "foo",
				"BAR": "foo",
			},
		},
		{
			"conflict with value set in environment",
			"FOO=foo\nBAR=${FOO}",
			[]string{"FOO=zot"},
			types.Mapping{
				"FOO": "zot",
				"BAR": "zot",
			},
		},
	}

	for _, test := range testcases {
		t.Run(test.name, func(t *testing.T) {
			wd := t.TempDir()
			err := os.WriteFile(filepath.Join(wd, ".env"), []byte(test.dotEnv), 0o700)
			assert.NilError(t, err)
			options, err := NewProjectOptions(nil,
				// First load os.Env variable, higher in precedence rule
				WithEnv(test.osEnv),
				// Then load dotEnv file
				WithWorkingDirectory(wd), WithEnvFiles(), WithDotEnv)
			assert.NilError(t, err)
			assert.DeepEqual(t, test.expected, options.Environment)
		})
	}
}