Function TestMatchCodeGen_ConstructorPattern

pkg/codegen/match_test.go:11–109

TestMatchCodeGen_ConstructorPattern tests code generation for constructor patterns.

(t *testing.T)

// TestMatchCodeGen_ConstructorPattern tests code generation for constructor patterns.
func TestMatchCodeGen_ConstructorPattern(t *testing.T) {
	tests := []struct {
		name         string
		match        *ast.MatchExpr
		expectedPart string // Part of the output we expect to see
	}{
		{
			name: "Simple Ok/Err match",
			match: &ast.MatchExpr{
				Match: 1,
				Scrutinee: &ast.RawExpr{
					StartPos: 7,
					EndPos:   13,
					Text:     "result",
				},
				Arms: []*ast.MatchArm{
					{
						Pattern: &ast.ConstructorPattern{
							Name: "Ok",
							Params: []ast.Pattern{
								&ast.VariablePattern{Name: "value"},
							},
						},
						Body: &ast.RawExpr{Text: "value"},
					},
					{
						Pattern: &ast.ConstructorPattern{
							Name: "Err",
							Params: []ast.Pattern{
								&ast.VariablePattern{Name: "e"},
							},
						},
						Body: &ast.RawExpr{Text: "0"},
					},
				},
				IsExpr: false,
			},
			expectedPart: "res.IsOk()", // NEW: method-based Result matching
		},
		{
			name: "Some/None match",
			match: &ast.MatchExpr{
				Match: 1,
				Scrutinee: &ast.RawExpr{
					Text: "opt",
				},
				Arms: []*ast.MatchArm{
					{
						Pattern: &ast.ConstructorPattern{
							Name: "Some",
							Params: []ast.Pattern{
								&ast.VariablePattern{Name: "x"},
							},
						},
						Body: &ast.RawExpr{Text: "x"},
					},
					{
						Pattern: &ast.ConstructorPattern{