| 904 | } |
| 905 | |
| 906 | func TestCell(t *testing.T) { |
| 907 | tests := []struct { |
| 908 | desc string |
| 909 | cvs func() (*Canvas, error) |
| 910 | point image.Point |
| 911 | want *buffer.Cell |
| 912 | wantErr bool |
| 913 | }{ |
| 914 | { |
| 915 | desc: "requested point falls outside of the canvas", |
| 916 | cvs: func() (*Canvas, error) { |
| 917 | cvs, err := New(image.Rect(0, 0, 1, 1)) |
| 918 | if err != nil { |
| 919 | return nil, err |
| 920 | } |
| 921 | return cvs, nil |
| 922 | }, |
| 923 | point: image.Point{1, 1}, |
| 924 | wantErr: true, |
| 925 | }, |
| 926 | { |
| 927 | desc: "returns the cell", |
| 928 | cvs: func() (*Canvas, error) { |
| 929 | cvs, err := New(image.Rect(0, 0, 2, 2)) |
| 930 | if err != nil { |
| 931 | return nil, err |
| 932 | } |
| 933 | if _, err := cvs.SetCell( |
| 934 | image.Point{1, 1}, 'A', |
| 935 | cell.FgColor(cell.ColorRed), |
| 936 | cell.BgColor(cell.ColorBlue), |
| 937 | ); err != nil { |
| 938 | return nil, err |
| 939 | } |
| 940 | return cvs, nil |
| 941 | }, |
| 942 | point: image.Point{1, 1}, |
| 943 | want: &buffer.Cell{ |
| 944 | Rune: 'A', |
| 945 | Opts: cell.NewOptions( |
| 946 | cell.FgColor(cell.ColorRed), |
| 947 | cell.BgColor(cell.ColorBlue), |
| 948 | ), |
| 949 | }, |
| 950 | }, |
| 951 | } |
| 952 | |
| 953 | for _, tc := range tests { |
| 954 | t.Run(tc.desc, func(t *testing.T) { |
| 955 | cvs, err := tc.cvs() |
| 956 | if err != nil { |
| 957 | t.Fatalf("tc.cvs => unexpected error: %v", err) |
| 958 | } |
| 959 | |
| 960 | got, err := cvs.Cell(tc.point) |
| 961 | if (err != nil) != tc.wantErr { |
| 962 | t.Errorf("Cell => unexpected error: %v, wantErr: %v", err, tc.wantErr) |
| 963 | } |