nus/cs2030s/labs/Lab7/CS2030STest.java

77 lines
2.5 KiB
Java

import java.net.URI;
import java.util.List;
import java.util.ArrayList;
import javax.tools.DiagnosticCollector;
import javax.tools.SimpleJavaFileObject;
import javax.tools.ToolProvider;
import java.io.PrintStream;
import java.io.ByteArrayOutputStream;
public class CS2030STest {
private static final String ANSI_RESET = "\u001B[0m";
private static final String ANSI_RED = "\u001B[31m";
private static final String ANSI_GREEN = "\u001B[32m";
public void expect(String test, Object output, Object expect) {
System.out.print(test);
if ((expect == null && output == null) || output.equals(expect)) {
System.out.println(".. " + ANSI_GREEN + "ok" + ANSI_RESET);
} else {
System.out.println(".. " + ANSI_RED + "failed" + ANSI_RESET);
System.out.println(" expected: " + expect);
System.out.println(" got this: " + output);
}
}
public static String clean(String txt) {
String res = "";
for (int i=0; i<txt.length(); i++) {
if (txt.charAt(i) != '\r' && txt.charAt(i) != '\n') {
res += txt.charAt(i);
}
}
return res;
}
public void expectPrint(String test, Object expect, ByteArrayOutputStream baos, PrintStream old) {
System.out.flush();
System.setOut(old);
expect(test, CS2030STest.clean(baos.toString()), expect);
}
public void expectCompile(String test, String statement, boolean success) {
System.out.print(test);
class JavaSourceFromString extends SimpleJavaFileObject {
final String code;
JavaSourceFromString(String code) {
super(URI.create("string:///TempClass.java"), Kind.SOURCE);
this.code = "class TempClass {void foo(){" + code + ";}}";
}
@Override
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return code;
}
}
boolean noError = ToolProvider
.getSystemJavaCompiler()
.getTask(null, null, new DiagnosticCollector<>(), null, null,
List.of(new JavaSourceFromString(statement)))
.call();
if (noError != success) {
System.out.println(".. " + ANSI_RED + "failed" + ANSI_RESET);
if (!success) {
System.out.println(" expected compilation error but it compiles fine.");
} else {
System.out.println(" expected the statement to compile without errors but it does not.");
}
} else {
System.out.println(".. " + ANSI_GREEN + "ok" + ANSI_RESET);
}
}
}