Feat: Env variables to set health timeouts

- HEALTH_OPENVPN_DURATION_INITIAL
- HEALTH_OPENVPN_DURATION_ADDITION

internal/configuration/healthwait_test.go

@@ -0,0 +1,55 @@
+package configuration
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_HealthyWait_String(t *testing.T) {
+	t.Parallel()
+
+	var healthyWait HealthyWait
+	const expected = "|--Initial duration: 0s"
+
+	s := healthyWait.String()
+
+	assert.Equal(t, expected, s)
+}
+
+func Test_HealthyWait_lines(t *testing.T) {
+	t.Parallel()
+
+	testCases := map[string]struct {
+		settings HealthyWait
+		lines    []string
+	}{
+		"empty": {
+			lines: []string{
+				"|--Initial duration: 0s",
+			},
+		},
+		"filled settings": {
+			settings: HealthyWait{
+				Initial:  time.Second,
+				Addition: time.Minute,
+			},
+			lines: []string{
+				"|--Initial duration: 1s",
+				"|--Addition duration: 1m0s",
+			},
+		},
+	}
+
+	for name, testCase := range testCases {
+		testCase := testCase
+		t.Run(name, func(t *testing.T) {
+			t.Parallel()
+
+			lines := testCase.settings.lines()
+
+			assert.Equal(t, testCase.lines, lines)
+		})
+	}
+}