Function TestMatrixString

math/matrix/string_test.go:13–50

(t *testing.T)

)

func TestMatrixString(t *testing.T) {
	// Create a sample matrix for testing
	m1, err := matrix.NewFromElements([][]int{{1, 2}, {3, 4}})
	if err != nil {
		t.Errorf("Error creating matrix: %v", err)
	}

	// Redirect stdout to capture Stringed output
	old := os.Stdout
	r, w, err := os.Pipe()
	if err != nil {
		t.Fatalf("Failed to copy matrix: %v", err)
	}
	os.Stdout = w

	// Call the String method
	fmt.Print(m1)

	// Reset stdout
	w.Close()
	os.Stdout = old

	// Read the captured output
	var buf bytes.Buffer
	_, err = io.Copy(&buf, r)
	if err != nil {
		t.Errorf("Error copying output: %v", err)
	}
	capturedOutput := buf.String()

	// Define the expected output
	expectedOutput := "1 2 \n3 4 \n"

	// Compare the captured output with the expected output
	if capturedOutput != expectedOutput {
		t.Errorf("Matrix.Print() produced incorrect output:\n%s\nExpected:\n%s", capturedOutput, expectedOutput)
	}
}

func TestNullMatrixString(t *testing.T) {