51 lines
2.4 KiB
Plaintext
51 lines
2.4 KiB
Plaintext
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| ddt: add up change |
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| # description | 1c | 5c | 10c | 25c | 50c | $1 | total cents? | $ total? |
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| some simple addition | 2 | 2 | 4 | 0 | 0 | 0 | 52 | 0.52 |
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| save the total cents in a symbol | 56 | 0 | 0 | 0 | 1 | 20 | $totalCents= | 21.06 |
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| now use the total cents that were stored | $totalCents | 0 | 0 | 0 | 0 | 10 | 3106 | ~=31.1 | An example for ValueComparisons |
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This is a dynamic decision table. The syntax is the same as that of a DecisionTable, except that the first cell has to be prefixed by ''ddt:'' or ''dynamic decision:''.
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The dynamic decision table provides an alternative to the DecisionTable when the GracefulNames of the column headers are not well suited as method names.
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The source code of the fixture !-AddUpChange-! looks like this:{{{
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public class AddUpChange {
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private Integer totalCents = 0;
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private static Map<String, Integer> COIN_VALUES = new HashMap<String, Integer>();
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static {
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COIN_VALUES.put("1c", 1);
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COIN_VALUES.put("5c", 5);
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COIN_VALUES.put("10c", 10);
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COIN_VALUES.put("25c", 25);
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COIN_VALUES.put("50c", 50);
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COIN_VALUES.put("$1", 100);
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}
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public void reset() {
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totalCents = 0;
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}
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public void set(String coin, Integer amount) {
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if (!COIN_VALUES.containsKey(coin)) {
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throw new IllegalArgumentException("Unknown coin type " + coin);
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}
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totalCents += amount * COIN_VALUES.get(coin);
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}
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public String get(String requestedValue) {
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if ("$ total".equals(requestedValue)) {
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return String.format(Locale.US, "%.2f", totalCents / 100.0);
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}
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return String.format("%d", totalCents);
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}
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}
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}}}
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The cells with column headers that do not end with a ''?'' are considered inputs and they result in a method call !style_code(set(''header'', ''value'')). The cells with column headers that end with a ''?'' are considered outputs and they result in a method call !style_code(get(''header'')).
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Apart from that the same methods are called as for a DecisionTable (!style_code(table), !style_code(beginTable), !style_code(reset), !style_code(execute), !style_code(endTable)).
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As in a DecisionTable, all the !style_code(set) method calls are done before the !style_code(execute) call and all the !style_code(get) method calls are done after the !style_code(execute) call.
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You can use SymbolsInTables and ValueComparisons as well as comment column headers prefixed with ''#'' and use additional cells as comments.
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