package main

import "testing"

func TestMaxACols(t *testing.T) {
	tests := []struct {
		name     string
		results  []MatchResult
		expected int
	}{
		{
			name:     "uniform rows",
			results:  []MatchResult{{RowAData: []string{"a", "b", "c"}}, {RowAData: []string{"d", "e", "f"}}},
			expected: 3,
		},
		{
			name:     "ragged rows",
			results:  []MatchResult{{RowAData: []string{"a"}}, {RowAData: []string{"b", "c", "d", "e"}}, {RowAData: []string{"f", "g"}}},
			expected: 4,
		},
		{
			name:     "empty rows",
			results:  []MatchResult{{RowAData: []string{}}, {RowAData: []string{"a"}}},
			expected: 1,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got := maxACols(tt.results)
			if got != tt.expected {
				t.Errorf("maxACols() = %d, want %d", got, tt.expected)
			}
		})
	}
}

func TestCSVEscape(t *testing.T) {
	tests := []struct {
		input    string
		expected string
	}{
		{"hello", "hello"},
		{"has,comma", `"has,comma"`},
		{"has\"quote", `"has""quote"`},
		{"line\nbreak", "\"line\nbreak\""},
	}

	for _, tt := range tests {
		t.Run(tt.input, func(t *testing.T) {
			got := csvEscape(tt.input)
			if got != tt.expected {
				t.Errorf("csvEscape(%q) = %q, want %q", tt.input, got, tt.expected)
			}
		})
	}
}