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package com.oracle.graal.python.test.runtime;

import org.junit.Assert;
import org.junit.Before;

import com.oracle.graal.python.test.PythonTests;
import org.junit.Test;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;

public class ProfileTests {

    @Before
    public void ensureBytecode() {
        PythonTests.skipOnLegacyASTInterpreter();
    }

    @Test
    public void profileYield() {
        String source = "import sys\n" +
                        "def f(frame, event, arg): print(frame, event, arg)\n" +
                        "def fg(): yield 42\n" +
                        "g = fg()\n" +
                        "sys.setprofile(f)\n" +
                        "for i in g: pass";
        assertPrints("fg> call None\n" +
                        "fg> return 42\n" +
                        "fg> call None\n" +
                        "fg> return None\n" +
                        "<module>> return None\n", source);
    }

    @Test
    public void profileException() {
        String source = "import sys\n" +
                        "def f(frame, event, arg): print(frame, event, arg)\n" +
                        "sys.setprofile(f)\n" +
                        "try:\n" +
                        "  max(0)\n" +
                        "except Exception:\n" +
                        "  pass\n";
        assertPrints("<module>> c_call <built-in function max>\n" +
                        "<module>> c_exception <built-in function max>\n" +
                        "<module>> return None\n", source);
    }

    private static void assertPrints(String expected, String code) {
        final ByteArrayOutputStream byteArray = new ByteArrayOutputStream();
        final PrintStream printStream = new PrintStream(byteArray);
        PythonTests.runScript(new String[0], code, printStream, System.err);
        String result = byteArray.toString().replaceAll("\r\n", "\n");
        Assert.assertEquals(expected, result.replaceAll(".*code ", ""));
    }
}
