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     * A comma-separated part that starts with a LETTER is a product, never a memory

     * spec, however many digits and G/T characters follow it.

     *

     * VARIANT_ONLY's unit group used to be reachable at position 0, so the "G" of a

     * Motorola G-series name read as the unit and "06"/"37" fell through the trailing

     * class. "G06, G37 , G37 Power" then collapsed to two entities - "G06" and

     * "G06 G37" - and G37, a real catalog SKU, lost its cashback on five offers.

     * Realme "GT 7" matched identically and escaped only by never following a comma.

     */

    @Test

    public void keepsLetterLedModelNamesOutOfVariantInheritance() {

        assertEquals(Arrays.asList("G06", "G37", "G37 Power"),

                ProductNames.split("G06, G37 , G37 Power"));

        assertEquals(Arrays.asList("GT 7T", "GT 7"),

                ProductNames.split("GT 7T, GT 7"));

        assertEquals(Arrays.asList("G06", "G37", "G37 Power", "G77 Power", "G Max",

                        "Edge 70 Fusion (12/256)", "Edge 60 Pro (8+256)"),

                ProductNames.split("G06, G37, G37 Power , G77 Power, G Max ,"

                        + " Edge 70 Fusion (12/256) , Edge 60 Pro (8+256)"));

        // and the inheritance it guards must still fire for genuine memory specs

        assertEquals(Arrays.asList("RENO 15 PRO 256GB", "RENO 15 PRO 512GB"),

                ProductNames.split("RENO 15 PRO 256GB, 512GB"));

        assertEquals(Arrays.asList("F33 6+128GB", "F33 8+128GB", "F33 8+256GB"),

                ProductNames.split("F33 6+128GB, 8+128GB, 8+256GB"));

    }

    /**