neomutt attachment group tests

tests.txt

Functions:
	<group-alternatives>
	<group-multilingual>
	<ungroup>

	The two 'group's should behave the same way, except that 'multilingual' will do extra checks.

Test cases
	ten attachments (apple, banana, cherry, damson, elderberry, fig, guava, haw, ilama, jackfruit)

Degenerate <group>
	No tagged -- fail, min 2
	One tagged -- fail, min 2
	No group -- fail, not a group

Simple <group>
	tag A+B+C+D (start of set), <group>
		set occupies original position of A
	tag C+D+E+F (middle of set), <group>
		set occupies original position of C
	tag G+H+I+J (end of set), <group>
		set occupies original position of G
	tag A+B+C+D+E+F+G+H+I+J (entire set), <group>
		set occupies original position of A

Complex <group>
	Separate Singles
		tag A+C+E+G (at start), <group>
			set occupies original position of A
		tag C+D+G+H (in middle), <group>
			set occupies original position of C
		tag E+F+I+J (at end), <group>
			set occupies original position of E

	Separate Pairs
		tag A+B+E+F (at start), <group>
			set occupies original position of A
		tag C+D+G+H (in middle), <group>
			set occupies original position of C
		tag E+F+I+J (at end), <group>
			set occupies original position of E

Multiple <group>
	Separate Groups
		tag A+B+C, <group>, tag F+G+H, <group> (start, middle)
		tag C+D+E, <group>, tag H+I+J, <group> (middle, end)
		tag A+B, <group>, tag D+E, <group>, tag I+J, <group> (start, middle, end)

	Adjacent Groups
		tag A+B+C, <group>, tag D+E+F, <group>
		tag E+F+G, <group>, tag H+I+J, <group>
		tag A+B+C+D+E, <group>, tag F+G+H+I+J, <group>
		tag A+B, <group>, tag C+D, <group>, tag E+F, <group>, tag G+H, <group>, tag I+J, <group>,

Nested <group>
	Simple (start, middle, end)
		tag A+B+C+D+E, <group>, tag A+B+C, <group> (start)
		tag A+B+C+D+E, <group>, tag B+C+D, <group> (middle)
		tag A+B+C+D+E, <group>, tag C+D+E, <group> (end)

		tag D+E+F+G+H, <group>, tag D+E+F, <group> (start)
		tag D+E+F+G+H, <group>, tag E+F+G, <group> (middle)
		tag D+E+F+G+H, <group>, tag F+G+H, <group> (end)

		tag F+G+H+I+J, <group>, tag F+G+H, <group> (start)
		tag F+G+H+I+J, <group>, tag G+H+I, <group> (middle)
		tag F+G+H+I+J, <group>, tag H+I+J, <group> (end)

	Multiple
		tag A+B+C+D+E+F+G+H+I+J, <group>, tag B+C+D+E+F+G+H+I, <group>, tag C+D+E+F+G+H, <group>, tag D+E+F+G, <group>, tag E+F, <group>

Move <group>
	Top-level groups
		tag A+B+C+D (start), <group>, select Group(ABCD), <move-up> -- fail
		tag A+B+C+D (start), <group>, select Group(ABCD), <move-down> -- success

		tag C+D+E+F (middle), <group>, select Group(CDEF), <move-up> -- success
		tag C+D+E+F (middle), <group>, select Group(CDEF), <move-down> -- success

		tag G+H+I+J (end), <group>, select Group(GHIJ), <move-up> -- success
		tag G+H+I+J (end), <group>, select Group(GHIJ), <move-down> -- fail

		tag A+B+C+D+E+F+G+H+I+J (entire set), select Group(ABCDEFGHIJ), <group>, <move-up> -- fail
		tag A+B+C+D+E+F+G+H+I+J (entire set), select Group(ABCDEFGHIJ), <group>, <move-down> -- fail

	Nested groups
		tag A+B+C+D+E, <group>, tag A+B+C (start), <group>, select Group(ABC), <move-up> -- fail
		tag A+B+C+D+E, <group>, tag A+B+C (start), <group>, select Group(ABC), <move-down> -- success

		tag A+B+C+D+E, <group>, tag B+C+D (middle), <group>, select Group(BCD), <move-up> -- success
		tag A+B+C+D+E, <group>, tag B+C+D (middle), <group>, select Group(BCD), <move-down> -- success

		tag A+B+C+D+E, <group>, tag C+D+E (end), <group>, select Group(CDE), <move-up> -- success
		tag A+B+C+D+E, <group>, tag C+D+E (end), <group>, select Group(CDE), <move-down> -- fail

Simple <ungroup>
	Simple <group>
		tag A+B+C+D, <group>, select Group(ABCD), <ungroup>
		tag C+D+E+F, <group>, select Group(CDEF), <ungroup>
		tag G+H+I+J, <group>, select Group(GHIJ), <ungroup>
		tag A+B+C+D+E+F+G+H+I+J, <group>, select Group(ABCDEFGHIJ), <ungroup>

	Multiple <group>
		Separate Groups
			tag A+B+C, <group>, tag F+G+H, <group>, select Group(ABC), <ungroup>
			tag A+B+C, <group>, tag F+G+H, <group>, select Group(FGH), <ungroup>

			tag C+D+E, <group>, tag H+I+J, <group>, select Group(CDE), <ungroup>
			tag C+D+E, <group>, tag H+I+J, <group>, select Group(HIJ), <ungroup>

			tag A+B, <group>, tag D+E, <group>, tag I+J, <group>, select Group(AB), <ungroup>
			tag A+B, <group>, tag D+E, <group>, tag I+J, <group>, select Group(DE), <ungroup>
			tag A+B, <group>, tag D+E, <group>, tag I+J, <group>, select Group(IJ), <ungroup>

		Adjacent Groups
			tag A+B+C, <group>, tag D+E+F, <group>, select Group(ABC), <ungroup>
			tag A+B+C, <group>, tag D+E+F, <group>, select Group(DEF), <ungroup>

			tag E+F+G, <group>, tag H+I+J, <group>, select Group(EFG), <ungroup>
			tag E+F+G, <group>, tag H+I+J, <group>, select Group(HIJ), <ungroup>

			tag A+B+C+D+E, <group>, tag F+G+H+I+J, <group>, select Group(ABCDE), <ungroup>
			tag A+B+C+D+E, <group>, tag F+G+H+I+J, <group>, select Group(FGHIJ), <ungroup>


	Nested <group>
		Simple
			tag A+B+C+D+E, <group>, tag A+B+C, <group>, select Group(ABC), <ungroup>
			tag A+B+C+D+E, <group>, tag B+C+D, <group>, select Group(BCD), <ungroup>
			tag A+B+C+D+E, <group>, tag C+D+E, <group>, select Group(CDE), <ungroup>