Test UnixMilli#MarshalJSON()

pkg/types/unix_milli_test.go

@@ -0,0 +1,30 @@
+package types
+
+import (
+	"github.com/stretchr/testify/require"
+	"testing"
+	"time"
+	"unicode/utf8"
+)
+
+func TestUnixMilli_MarshalJSON(t *testing.T) {
+	subtests := []struct {
+		name   string
+		input  UnixMilli
+		output string
+	}{
+		{"zero", UnixMilli{}, `null`},
+		{"epoch", UnixMilli(time.Unix(0, 0)), `0`},
+		{"nonzero", UnixMilli(time.Unix(1234567890, 62500000)), `1234567890062`},
+	}
+
+	for _, st := range subtests {
+		t.Run(st.name, func(t *testing.T) {
+			actual, err := st.input.MarshalJSON()
+
+			require.NoError(t, err)
+			require.True(t, utf8.Valid(actual))
+			require.Equal(t, st.output, string(actual))
+		})
+	}
+}