Function TestMaxWidthWriter

internal/iamctl/util/term/term_writer_test.go:58–104

(t *testing.T)

}

func TestMaxWidthWriter(t *testing.T) {
	testcases := map[string]struct {
		input    string
		maxWidth uint
	}{
		"max 10":   {input: test, maxWidth: 10},
		"max 80":   {input: test, maxWidth: 80},
		"max 120":  {input: test, maxWidth: 120},
		"max 5000": {input: test, maxWidth: 5000},
	}
	for k, tc := range testcases {
		b := bytes.NewBufferString("")
		w := NewMaxWidthWriter(b, tc.maxWidth)
		_, err := w.Write([]byte(tc.input))
		if err != nil {
			t.Errorf("%s: Unexpected error: %v", k, err)
		}
		result := b.String()
		if !strings.Contains(result, "Iam") {
			t.Errorf("%s: Expected to contain \"Iam\"", k)
		}
		if len(result) < len(tc.input) {
			t.Errorf(
				"%s: Unexpectedly short string, got %d wanted at least %d chars: %q",
				k,
				len(result),
				len(tc.input),
				result,
			)
		}
		lines := strings.Split(result, "\n")
		for i, line := range lines {
			if len(line) > int(tc.maxWidth) {
				t.Errorf("%s: Every line must be at most %d chars long, got %d: %q", k, tc.maxWidth, len(line), line)
			}
			if i < len(lines)-1 && len(line) != int(tc.maxWidth) {
				t.Errorf(
					"%s: Lines except the last one are expected to be exactly %d chars long, got %d: %q",
					k,
					tc.maxWidth,
					len(line),
					line,
				)
			}
		}
	}
}