Function TestSpec_PublicAPI_IsPositiveInteger

pkg/stringutil/spec_test.go:152–202

TestSpec_PublicAPI_IsPositiveInteger validates the documented behavior of IsPositiveInteger as described in the package README.md. Specification: "Returns true if and only if s is a decimal integer that is strictly greater than zero, has no leading zeros, and contains no non-digit characters. Retur

(t *testing.T)

// characters. Returns false for "", "0", negative strings (e.g. "-5"), strings
// with leading zeros (e.g. "007"), and non-numeric strings."
func TestSpec_PublicAPI_IsPositiveInteger(t *testing.T) {
	tests := []struct {
		name     string
		input    string
		expected bool
	}{
		{
			name:     "digit-only string > 0 returns true",
			input:    "123",
			expected: true,
		},
		{
			name:     "single positive digit returns true",
			input:    "1",
			expected: true,
		},
		{
			name:     "empty string returns false (documented)",
			input:    "",
			expected: false,
		},
		{
			name:     "zero returns false (documented)",
			input:    "0",
			expected: false,
		},
		{
			name:     "string with leading zeros returns false (documented '007' case)",
			input:    "007",
			expected: false,
		},
		{
			name:     "negative number returns false (documented '-5' case)",
			input:    "-5",
			expected: false,
		},
		{
			name:     "non-numeric string returns false",
			input:    "12a3",
			expected: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			result := IsPositiveInteger(tt.input)
			assert.Equal(t, tt.expected, result,
				"IsPositiveInteger(%q) should match documented behavior", tt.input)
		})
	}
}

// TestSpec_PublicAPI_StripANSI validates the documented behavior of StripANSI
// as described in the package README.md.