package system

import (
	"testing"
)

func TestDropinContents(t *testing.T) {
	tests := []struct {
		Config   interface{}
		Contents string
	}{
		{
			struct{}{},
			"",
		},
		{
			struct {
				A string  `env:"A"`
				B int     `env:"B"`
				C bool    `env:"C"`
				D float64 `env:"D"`
			}{
				"hi", 1, true, 0.12345,
			},
			`[Service]
Environment="A=hi"
Environment="B=1"
Environment="C=true"
Environment="D=0.12345"
`,
		},
		{
			struct {
				A float64 `env:"A"`
				B float64 `env:"B"`
				C float64 `env:"C"`
				D float64 `env:"D"`
			}{
				0.000001, 1, 0.9999999, 0.1,
			},
			`[Service]
Environment="A=1e-06"
Environment="B=1"
Environment="C=0.9999999"
Environment="D=0.1"
`,
		},
	}

	for _, tt := range tests {
		if c := dropinContents(tt.Config); c != tt.Contents {
			t.Errorf("bad contents (%+v): want %q, got %q", tt, tt.Contents, c)
		}
	}
}