file("src/test/java/org/gradle/Class1Test.java") <<
            """
            package org.gradle;

            import static org.junit.Assert.assertTrue;

            import org.junit.Test;

            public class Class1Test {
                @Test
                public void testFoo() {
                    Class1 c = new Class1();

        file("src/main/java/org/gradle/Class1.java") <<
            "package org.gradle; class Class1 { public boolean isFoo(Object arg) { return true; } }"
        file("src/test/java/org/gradle/Class1Test.java") <<
            "package org.gradle; class Class1Test { public boolean isFoo(Object arg) { return true; } }"
    }