Function TestFlagsFromEnv

flag_test.go:156–456

(t *testing.T)

}

func TestFlagsFromEnv(t *testing.T) {
	testCases := []struct {
		name        string
		input       string
		output      any
		fl          Flag
		errContains string
	}{
		{
			name:   "BoolFlag valid true",
			input:  "1",
			output: true,
			fl:     &BoolFlag{Name: "debug", Sources: EnvVars("DEBUG")},
		},
		{
			name:   "BoolFlag valid false",
			input:  "false",
			output: false,
			fl:     &BoolFlag{Name: "debug", Sources: EnvVars("DEBUG")},
		},
		{
			name:   "BoolFlag invalid",
			input:  "foobar",
			output: true,
			fl:     &BoolFlag{Name: "debug", Sources: EnvVars("DEBUG")},
			errContains: `could not parse "foobar" as bool value from environment variable ` +
				`"DEBUG" for flag debug:`,
		},
		{
			name:   "BoolInverse Empty",
			output: false,
			fl:     &BoolWithInverseFlag{Name: "debug", Sources: EnvVars("DEBUG")},
		},
		{
			name:   "DurationFlag valid",
			input:  "1s",
			output: 1 * time.Second,
			fl:     &DurationFlag{Name: "time", Sources: EnvVars("TIME")},
		},
		{
			name:   "DurationFlag invalid",
			input:  "foobar",
			output: false,
			fl:     &DurationFlag{Name: "time", Sources: EnvVars("TIME")},
			errContains: `could not parse "foobar" as time.Duration value from environment ` +
				`variable "TIME" for flag time:`,
		},

		{
			name:   "Float64Flag valid",
			input:  "1.2",
			output: 1.2,
			fl:     &FloatFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
		},
		{
			name:   "Float64Flag valid from int",
			input:  "1",
			output: 1.0,