Serenibyss
56 lines
1.7 KiB
Java
56 lines
1.7 KiB
Java
package appeng.client.gui;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.CsvSource;
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import java.text.DecimalFormat;
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import java.text.DecimalFormatSymbols;
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import java.util.Locale;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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public class MathExpressionParserTest {
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@ParameterizedTest
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@CsvSource(value = {
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"1 + 2|3",
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"3 *4 |12",
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"1 + 2 * 3 |7",
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"1 - 6|-5",
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"1/3|0.333333",
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"23.4 + 0.6|24",
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"1 - -4|5",
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"1 + 4*3*2|25",
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"1/0|failed",
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"1/(1 - 1)|failed",
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"3 + 2 * 4 - 1 /2|10.5",
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"1 + (2 * (2 * (1 + 1)))|9",
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"arkazkdhz|failed",
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"1 + 2 3 7 - 1|237", // whitespace is trimmed
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"2 + + 2|failed",
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"10e6|10000000",
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"-1 -1|-2",
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"- (1 + 1)|-2",
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"2 * -1|-2",
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"2 -2|0",
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"- 1|-1",
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"-1|-1",
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"- - - - - 5|failed", // not able to handle multiple negations, may fix in the future
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"-(-(-(-2)))|failed", // not able to handle multiple negations, may fix in the future
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"1 - -1|2",
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"1 + -(2|failed"
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}, delimiter = '|')
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void testMath(String expression, String expected) {
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DecimalFormat format = new DecimalFormat("#.######", DecimalFormatSymbols.getInstance(Locale.US));
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format.setParseBigDecimal(true);
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format.setNegativePrefix("-");
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double parsed = MathExpressionParser.parse(expression);
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if (Double.isNaN(parsed)) {
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assertEquals(expected, "failed");
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} else {
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assertEquals(expected, format.format(parsed));
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}
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}
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}
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