pad_test.go

package strutil

import (
	"fmt"
	"testing"
)

func TestPadLeft(t *testing.T) {
	tests := []struct {
		width    int
		input    string
		pad      string
		expected string
	}{
		{10, "lorem", "-", "-----lorem"},
		{5, "lorem", "-", "lorem"},
		{6, "lorem", ".-", ".lorem"},
		{9, "lorem", ".-", ".-.-lorem"},
		{10, "lorem", "", "lorem"},
		{0, "lorem", "-", "lorem"},
		{4, "lorem", "-", "lorem"},
		{4, "", "-", "----"},
		{6, "lorem", ".-=", ".lorem"},
	}

	for i, test := range tests {
		output := PadLeft(test.input, test.width, test.pad)
		Assert(t, test.expected, output, "Test case %d is not successful\n", i)
	}
}

func ExamplePadLeft() {
	fmt.Println(PadLeft("lorem", 10, "-"))
	// Output: -----lorem
}

func TestPadRight(t *testing.T) {
	tests := []struct {
		width    int
		input    string
		pad      string
		expected string
	}{
		{10, "lorem", "-", "lorem-----"},
		{5, "lorem", "-", "lorem"},
		{6, "lorem", ".-", "lorem."},
		{9, "lorem", ".-", "lorem.-.-"},
		{10, "lorem", "", "lorem"},
		{0, "lorem", "-", "lorem"},
		{4, "lorem", "-", "lorem"},
		{4, "", "-", "----"},
	}

	for i, test := range tests {
		output := PadRight(test.input, test.width, test.pad)
		Assert(t, test.expected, output, "Test case %d is not successful\n", i)
	}
}

func ExamplePadRight() {
	fmt.Println(PadRight("lorem", 10, "-"))
	// Output: lorem-----
}
func TestPad(t *testing.T) {
	tests := []struct {
		width    int
		input    string
		leftPad  string
		rightPad string
		expected string
	}{
		{9, "lorem", "-", "-", "--lorem--"},
		{10, "lorem", ".-", "-.", ".-lorem-.-"},
		{1, "lorem", ".-", "-.", "lorem"},
		{4, "", ".-", "-.", ".--."},
		{10, "lorem", "", "", "lorem"},
		{10, "lorem", "-", "", "-----lorem"},
	}

	for i, test := range tests {
		output := Pad(test.input, test.width, test.leftPad, test.rightPad)
		Assert(t, test.expected, output, "Test case %d is not successful\n", i)
	}
}

func ExamplePad() {
	fmt.Println(Pad("lorem", 9, "-", "-"))
	// Output: --lorem--
}