gno.land/p/moul/x/daily/humanize/v1⧉

1package humanize23import (4	"strings"5	"testing"67	"gno.land/p/nt/uassert/v0"8)910func TestBytes(t *testing.T) {11	cases := []struct {12		in   int6413		want string14	}{15		{0, "0 B"},16		{999, "999 B"},17		{1023, "1023 B"},18		{1024, "1 KiB"},19		{1536, "1.5 KiB"},20		{1048576, "1 MiB"},21		{1572864, "1.5 MiB"},22		{1073741824, "1 GiB"},23		{-1536, "-1.5 KiB"},24		{-10, "-10 B"},25	}26	for _, c := range cases {27		uassert.Equal(t, c.want, Bytes(c.in))28	}29}3031func TestComma(t *testing.T) {32	cases := []struct {33		in   int6434		want string35	}{36		{0, "0"}, {1, "1"}, {999, "999"}, {1000, "1,000"},37		{1234567, "1,234,567"}, {-1234567, "-1,234,567"},38	}39	for _, c := range cases {40		uassert.Equal(t, c.want, Comma(c.in))41	}42}4344// The teens are the trap: 11/12/13 take "th" despite ending in 1/2/3.45func TestOrdinalTeens(t *testing.T) {46	cases := []struct {47		in   int6448		want string49	}{50		{1, "1st"}, {2, "2nd"}, {3, "3rd"}, {4, "4th"},51		{11, "11th"}, {12, "12th"}, {13, "13th"},52		{21, "21st"}, {22, "22nd"}, {23, "23rd"},53		{111, "111th"}, {112, "112th"}, {113, "113th"},54		{101, "101st"}, {0, "0th"},55	}56	for _, c := range cases {57		uassert.Equal(t, c.want, Ordinal(c.in))58	}59}6061func TestPlural(t *testing.T) {62	uassert.Equal(t, "1 block", Plural(1, "block", ""))63	uassert.Equal(t, "2 blocks", Plural(2, "block", ""))64	uassert.Equal(t, "0 blocks", Plural(0, "block", ""))65	uassert.Equal(t, "2 mice", Plural(2, "mouse", "mice"))66	uassert.Equal(t, "-1 block", Plural(-1, "block", ""))67}6869func TestBlocks(t *testing.T) {70	uassert.Equal(t, "now", Blocks(0))71	uassert.Equal(t, "1 block", Blocks(1))72	uassert.Equal(t, "9 blocks", Blocks(9))73	uassert.Equal(t, "~10 blocks", Blocks(15))74	uassert.Equal(t, "~1,200 blocks", Blocks(1234))75	uassert.Equal(t, "in the past", Blocks(-5))76}7778// Truncate counts runes, so multi-byte text is never cut mid-character.79func TestTruncateCountsRunes(t *testing.T) {80	uassert.Equal(t, "hello", Truncate("hello", 10))81	uassert.Equal(t, "hell…", Truncate("hello!", 5))82	uassert.Equal(t, "…", Truncate("hello", 1))83	uassert.Equal(t, "", Truncate("hello", 0))84	uassert.Equal(t, "éé", Truncate("éé", 2))85	uassert.Equal(t, "é…", Truncate("ééé", 2)) // not sliced mid-rune86}8788// TestCommaSurvivesTheInt64Minimum pins the defect v0 shipped. -n on89// math.MinInt64 is math.MinInt64, so FormatInt emitted its own sign and the90// neg branch prepended a second: v0 returned91// "--9,223,372,036,854,775,808". Break the mag split and this goes red.92func TestCommaSurvivesTheInt64Minimum(t *testing.T) {93	const minInt64 = -922337203685477580894	uassert.Equal(t, "-9,223,372,036,854,775,808", Comma(minInt64))95	uassert.Equal(t, "9,223,372,036,854,775,807", Comma(9223372036854775807))96}9798// TestCommaNeverDoublesTheSign is the invariant behind it, stated so a future99// rewrite cannot reintroduce the shape without failing.100func TestCommaNeverDoublesTheSign(t *testing.T) {101	const minInt64 = -9223372036854775808102	for _, n := range []int64{0, 1, -1, 999, -1000, 1234567, -1234567, minInt64} {103		s := Comma(n)104		if strings.HasPrefix(s, "--") || strings.Contains(s, "-,") {105			t.Errorf("Comma(%d) = %q", n, s)106		}107		if (n < 0) != strings.HasPrefix(s, "-") {108			t.Errorf("Comma(%d) = %q, sign disagrees with the input", n, s)109		}110	}111}112