feat: test cases for SLA calculator, string utilities and attachments

internal/stringutil/stringutil_test.go

@@ -0,0 +1,143 @@
+package stringutil
+
+import (
+	"testing"
+	"time"
+)
+
+func TestReverseSlice(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    []string
+		expected []string
+	}{
+		{
+			name:     "empty slice",
+			input:    []string{},
+			expected: []string{},
+		},
+		{
+			name:     "single element",
+			input:    []string{"a"},
+			expected: []string{"a"},
+		},
+		{
+			name:     "multiple elements",
+			input:    []string{"a", "b", "c"},
+			expected: []string{"c", "b", "a"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			input := make([]string, len(tt.input))
+			copy(input, tt.input)
+			ReverseSlice(input)
+			if len(input) != len(tt.expected) {
+				t.Errorf("got len %d, want %d", len(input), len(tt.expected))
+			}
+			for i := range input {
+				if input[i] != tt.expected[i] {
+					t.Errorf("at index %d got %s, want %s", i, input[i], tt.expected[i])
+				}
+			}
+		})
+	}
+}
+
+func TestRemoveItemByValue(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    []string
+		remove   string
+		expected []string
+	}{
+		{
+			name:     "empty slice",
+			input:    []string{},
+			remove:   "a",
+			expected: []string{},
+		},
+		{
+			name:     "no matches",
+			input:    []string{"b", "c"},
+			remove:   "a",
+			expected: []string{"b", "c"},
+		},
+		{
+			name:     "single match",
+			input:    []string{"a", "b", "c"},
+			remove:   "b",
+			expected: []string{"a", "c"},
+		},
+		{
+			name:     "multiple matches",
+			input:    []string{"a", "b", "a", "c", "a"},
+			remove:   "a",
+			expected: []string{"b", "c"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := RemoveItemByValue(tt.input, tt.remove)
+			if len(result) != len(tt.expected) {
+				t.Errorf("got len %d, want %d", len(result), len(tt.expected))
+			}
+			for i := range result {
+				if result[i] != tt.expected[i] {
+					t.Errorf("at index %d got %s, want %s", i, result[i], tt.expected[i])
+				}
+			}
+		})
+	}
+}
+
+func TestFormatDuration(t *testing.T) {
+	tests := []struct {
+		name           string
+		duration       time.Duration
+		includeSeconds bool
+		expected       string
+	}{
+		{
+			name:           "zero duration with seconds",
+			duration:       0,
+			includeSeconds: true,
+			expected:       "0 minutes",
+		},
+		{
+			name:           "hours only",
+			duration:       2 * time.Hour,
+			includeSeconds: false,
+			expected:       "2 hours 0 minutes",
+		},
+		{
+			name:           "hours and minutes",
+			duration:       2*time.Hour + 30*time.Minute,
+			includeSeconds: false,
+			expected:       "2 hours 30 minutes",
+		},
+		{
+			name:           "full duration with seconds",
+			duration:       2*time.Hour + 30*time.Minute + 15*time.Second,
+			includeSeconds: true,
+			expected:       "2 hours 30 minutes 15 seconds",
+		},
+		{
+			name:           "full duration without seconds",
+			duration:       2*time.Hour + 30*time.Minute + 15*time.Second,
+			includeSeconds: false,
+			expected:       "2 hours 30 minutes",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := FormatDuration(tt.duration, tt.includeSeconds)
+			if result != tt.expected {
+				t.Errorf("got %q, want %q", result, tt.expected)
+			}
+		})
+	}
+}