Function TestExpandVariables

pkg/config/loader_test.go:43–107

(t *testing.T)

}

func TestExpandVariables(t *testing.T) {
	// Set test environment variables
	_ = os.Setenv("TEST_VAR", "test_value")
	_ = os.Setenv("ANOTHER_VAR", "another_value")
	defer func() { _ = os.Unsetenv("TEST_VAR") }()
	defer func() { _ = os.Unsetenv("ANOTHER_VAR") }()

	loader := NewLoader()

	tests := []struct {
		name     string
		input    string
		expected string
	}{
		{
			name:     "simple variable",
			input:    "${TEST_VAR}",
			expected: "test_value",
		},
		{
			name:     "variable with default - exists",
			input:    "${TEST_VAR:-default}",
			expected: "test_value",
		},
		{
			name:     "variable with default - not exists",
			input:    "${NONEXISTENT:-default_value}",
			expected: "default_value",
		},
		{
			name:     "simple dollar variable",
			input:    "$TEST_VAR",
			expected: "test_value",
		},
		{
			name:     "mixed content",
			input:    "prefix_${TEST_VAR}_suffix",
			expected: "prefix_test_value_suffix",
		},
		{
			name:     "multiple variables",
			input:    "${TEST_VAR}_${ANOTHER_VAR}",
			expected: "test_value_another_value",
		},
		{
			name:     "no variables",
			input:    "plain text",
			expected: "plain text",
		},
		{
			name:     "nonexistent variable",
			input:    "${DOES_NOT_EXIST}",
			expected: "",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {