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package libcore.java.math;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
/**
* Standard single-input test framework for csv math tests
*/
public abstract class CSVTest extends junit.framework.TestCase {
/*
* csv file should have the following format:
* function,expected_output,input,extra_info
* e.g. cos,-0x1.0000000000000p+0,0x1.921fb54442d18p+1,cos(pi)
* for two input: function,expected_output,input1,input2,extra
* vogar classpath: obj/JAVA_LIBRARIES/core-tests-support_intermediates/javalib.jar
*/
/**
* This is a set of functions in java.Math/StrictMath that take two inputs.
* These functions will call run2InputTest; others will call runTest.
*/
protected static final Set<String> twoInputFunctions;
static {
Set<String> twoInFunc = new HashSet<String>();
twoInFunc.add("atan2");
twoInFunc.add("copySign");
twoInFunc.add("hypot");
twoInFunc.add("IEEEremainder");
twoInFunc.add("max");
twoInFunc.add("min");
twoInFunc.add("nextAfter");
twoInFunc.add("pow");
twoInFunc.add("scalb");
twoInputFunctions = Collections.unmodifiableSet(twoInFunc);
}
void TestCSVInputs(String[] csvFileNames) throws Exception {
int totalTests = 0;
for (String csvFileName : csvFileNames) {
String line = "";
BufferedReader br = null;
try {
br = new BufferedReader(new InputStreamReader(
getClass().getResourceAsStream(csvFileName)));
while ((line = br.readLine()) != null) {
if (line.charAt(0) != '#') {
String[] testCase = line.split(",");
runTest(testCase);
totalTests++;
}
}
} finally {
if (br != null) {
br.close();
}
}
}
System.out.println("Completed running " + totalTests + " tests");
}
protected void runTest(String[] testCase) throws Exception {
String function = testCase[0];
double expectedOutput = Double.parseDouble(testCase[1]);
double input = Double.parseDouble(testCase[2]);
String extra = "";
if (twoInputFunctions.contains(function)) {
double input2 = Double.parseDouble(testCase[3]);
if (testCase.length > 4) {
extra = testCase[4];
}
run2InputTest(function, expectedOutput, input, input2, extra);
} else {
if (testCase.length > 3) {
extra = testCase[3];
}
runTest(function, expectedOutput, input, extra);
}
}
abstract void runTest(String func, double expectedOutput, double input,
String extra) throws Exception;
abstract void run2InputTest(String func, double expectedOutput, double input1, double input2, String extra) throws Exception;
}
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