main_test.go

package main

import (
	"testing"
)

func TestGetLines(t *testing.T) {
	tests := []struct {
		content      string
		wantTotal    int
		wantNonBlank int
	}{
		// 0
		{content: "This is one line", wantTotal: 1, wantNonBlank: 1},
		// 1 Test no content
		{content: "", wantTotal: 0, wantNonBlank: 0},
		// 2 A single blank line
		{content: "One blank line\n\nTwo nonblank lines", wantTotal: 3, wantNonBlank: 2},
		// 3 Testing multiple blank lines in a row
		{content: "\n\n", wantTotal: 3, wantNonBlank: 0},
		// 4 '
		{content: "\n\n\n\n", wantTotal: 5, wantNonBlank: 0},
		// 5 Multiple blank lines content on ends
		{content: "content\n\n\n\ncontent", wantTotal: 5, wantNonBlank: 2},
		// 6 Content with blank lines on ends
		{content: "\n\n\ncontent\n\n\n", wantTotal: 7, wantNonBlank: 1},
	}

	for i, test := range tests {
		t.Run("", func(t *testing.T) {
			gotTotal, gotNonBlank := getLines("", []byte(test.content))
			if gotTotal != test.wantTotal || gotNonBlank != test.wantNonBlank {
				t.Errorf("wrong line counts obtained for test case #%d:\n      %7s, %7s\nGOT:   %7d, %7d\nWANT:  %7d, %7d\n", i, "TOTAL", "NON_BLANK",
					gotTotal, gotNonBlank, test.wantTotal, test.wantNonBlank)
			}
		})
	}
}