sq/libsq/core/stringz/stringz_test.go

package stringz_test

import (
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"

	"github.com/neilotoole/sq/libsq/core/stringz"
)

func TestGenerateAlphaColName(t *testing.T) {
	quantity := 704
	colNames := make([]string, quantity)

	for i := 0; i < quantity; i++ {
		colNames[i] = stringz.GenerateAlphaColName(i)
	}

	items := []struct {
		index   int
		colName string
	}{
		{0, "A"},
		{1, "B"},
		{25, "Z"},
		{26, "AA"},
		{27, "AB"},
		{51, "AZ"},
		{52, "BA"},
		{53, "BB"},
		{77, "BZ"},
		{78, "CA"},
		{701, "ZZ"},
		{702, "AAA"},
		{703, "AAB"},
	}

	for _, item := range items {
		assert.Equal(t, item.colName, colNames[item.index])
	}
}

func TestUUID(t *testing.T) {
	for i := 0; i < 100; i++ {
		u := stringz.Uniq32()
		require.Equal(t, 32, len(u))
	}
}

func TestPluralize(t *testing.T) {
	testCases := []struct {
		s    string
		i    int
		want string
	}{
		{s: "row(s)", i: 0, want: "rows"},
		{s: "row(s)", i: 1, want: "row"},
		{s: "row(s)", i: 2, want: "rows"},
		{s: "row(s) col(s)", i: 0, want: "rows cols"},
		{s: "row(s) col(s)", i: 1, want: "row col"},
		{s: "row(s) col(s)", i: 2, want: "rows cols"},
		{s: "row(s)", i: 2, want: "rows"},
		{s: "rows", i: 0, want: "rows"},
		{s: "rows", i: 1, want: "rows"},
		{s: "rows", i: 2, want: "rows"},
	}

	for _, tc := range testCases {
		got := stringz.Plu(tc.s, tc.i)
		require.Equal(t, tc.want, got)
	}
}

func TestRepeatJoin(t *testing.T) {
	testCases := []struct {
		s     string
		count int
		sep   string
		want  string
	}{
		{s: "", count: 0, sep: ",", want: ""},
		{s: "", count: 1, sep: ",", want: ""},
		{s: "?", count: 1, sep: ",", want: "?"},
		{s: "?", count: 2, sep: ",", want: "?,?"},
		{s: "?", count: 3, sep: ",", want: "?,?,?"},
		{s: "?", count: 3, sep: "", want: "???"},
		{s: "?", count: 0, sep: "", want: ""},
		{s: "?", count: 1, sep: "", want: "?"},
		{s: "?", count: 2, sep: "", want: "??"},
		{s: "?", count: 3, sep: "", want: "???"},
	}

	for _, tc := range testCases {
		got := stringz.RepeatJoin(tc.s, tc.count, tc.sep)
		require.Equal(t, tc.want, got)
	}
}

func TestSurround(t *testing.T) {
	testCases := []struct {
		s    string
		w    string
		want string
	}{
		{s: "", w: "__", want: "____"},
		{s: "hello", w: "__", want: "__hello__"},
	}

	for _, tc := range testCases {
		got := stringz.Surround(tc.s, tc.w)
		require.Equal(t, tc.want, got)
	}
}

func TestSurroundSlice(t *testing.T) {
	testCases := []struct {
		a    []string
		w    string
		want []string
	}{
		{a: nil, w: "__", want: nil},
		{a: []string{}, w: "__", want: []string{}},
		{a: []string{""}, w: "__", want: []string{"____"}},
		{a: []string{"hello", "world"}, w: "__", want: []string{"__hello__", "__world__"}},
		{a: []string{"hello", "world"}, w: "", want: []string{"hello", "world"}},
	}

	for _, tc := range testCases {
		got := stringz.SurroundSlice(tc.a, tc.w)
		require.Equal(t, tc.want, got)
	}
}

func TestPrefixSlice(t *testing.T) {
	testCases := []struct {
		a    []string
		w    string
		want []string
	}{
		{a: nil, w: "__", want: nil},
		{a: []string{}, w: "__", want: []string{}},
		{a: []string{""}, w: "__", want: []string{"__"}},
		{a: []string{"hello", "world"}, w: "__", want: []string{"__hello", "__world"}},
		{a: []string{"hello", "world"}, w: "", want: []string{"hello", "world"}},
	}

	for _, tc := range testCases {
		got := stringz.PrefixSlice(tc.a, tc.w)
		require.Equal(t, tc.want, got)
	}
}

func TestParseBool(t *testing.T) {
	testCases := map[string]bool{
		"1":     true,
		"t":     true,
		"true":  true,
		"TRUE":  true,
		"y":     true,
		"Y":     true,
		"yes":   true,
		"Yes":   true,
		"YES":   true,
		"0":     false,
		"f":     false,
		"false": false,
		"False": false,
		"n":     false,
		"N":     false,
		"no":    false,
		"No":    false,
		"NO":    false,
	}

	for input, wantBool := range testCases {
		gotBool, gotErr := stringz.ParseBool(input)
		require.NoError(t, gotErr)
		require.Equal(t, wantBool, gotBool)
	}

	invalid := []string{"", " ", " true ", "gibberish", "-1"}
	for _, input := range invalid {
		_, gotErr := stringz.ParseBool(input)
		require.Error(t, gotErr)
	}
}

// TestSliceIndex_InSlice tests SliceIndex and InSlice.
func TestSliceIndex_InSlice(t *testing.T) {
	const needle = "hello"

	testCases := []struct {
		haystack []string
		needle   string
		want     int
	}{
		{haystack: nil, needle: needle, want: -1},
		{haystack: []string{}, needle: needle, want: -1},
		{haystack: []string{needle}, needle: needle, want: 0},
		{haystack: []string{"a", needle}, needle: needle, want: 1},
		{haystack: []string{"a", needle, "c"}, needle: needle, want: 1},
		{haystack: []string{"a", "b", needle}, needle: needle, want: 2},
	}

	for _, tc := range testCases {
		require.Equal(t, tc.want, stringz.SliceIndex(tc.haystack, tc.needle))
		// Also test sister func InSlice
		require.Equal(t, tc.want >= 0, stringz.InSlice(tc.haystack, tc.needle))
	}
}

func TestUniqTableName(t *testing.T) {
	t.Parallel()

	testCases := []string{
		"",
		"a",
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
	}

	for _, inputTblName := range testCases {
		gotTblName := stringz.UniqTableName(inputTblName)
		require.True(t, len(gotTblName) > 0)
		require.True(t, len(gotTblName) < 64)
		t.Logf("%d: %s", len(gotTblName), gotTblName)
	}
}

func TestSanitizeAlphaNumeric(t *testing.T) {
	testCases := map[string]string{
		"":         "",
		" ":        "_",
		"_":        "_",
		"abc123":   "abc123",
		"_abc_123": "_abc_123",
		"a#2%3.4_": "a_2_3_4_",
		"😀abc123😀": "_abc123_",
	}

	for input, want := range testCases {
		got := stringz.SanitizeAlphaNumeric(input, '_')
		require.Equal(t, want, got)
	}
}