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javascript/jstest/object/ObjectTester.java

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+package jstest.object;
+
+import base.TestCounter;
+import common.expression.ExprTester;
+import common.expression.Dialect;
+import common.expression.Diff;
+import common.expression.Language;
+import jstest.JSExpressionEngine;
+
+import java.nio.file.Path;
+
+/**
+ * Tester for
+ * <a href="https://www.kgeorgiy.info/courses/paradigms/homeworks.html#js-object-expressions">JavaScript Object Expressions</a>
+ * homework of <a href="https://www.kgeorgiy.info/courses/paradigms">Programming Paradigms</a> course.
+ *
+ * @author Georgiy Korneev (kgeorgiy@kgeorgiy.info)
+ */
+public final class ObjectTester {
+    public static final Dialect OBJECT = new Dialect("new Variable('%s')", "new Const(%s)", "new {op}({args})", ", ");
+
+    private static final Diff DIFF = new Diff(2, new Dialect(
+            "'%s'", "%s",
+            (name, args) -> "%s.%s(%s)".formatted(args.get(0), name, String.join(", ", args.subList(1, args.size())))
+    ));
+
+    private ObjectTester() {
+    }
+
+    public static ExprTester<Object> tester(
+            final TestCounter counter,
+            final Language language,
+            final String toString,
+            final String parse,
+            final ExprTester.Generator<String> spoiler,
+            final ExprTester.Generator<ExprTester.BadInput> corruptor
+    ) {
+        final ExprTester<Object> tester = new ExprTester<>(
+                counter,
+                ExprTester.RANDOM_TESTS / TestCounter.DENOMINATOR,
+                new JSExpressionEngine(Path.of("objectExpression.js"), ".evaluate", parse, toString),
+                language,
+                true,
+                ExprTester.STANDARD_SPOILER.combine(spoiler),
+                corruptor
+        );
+        if (counter.mode() >= 2) {
+            DIFF.diff(tester, true);
+        }
+        if (counter.mode() >= 3) {
+            DIFF.simplify(tester);
+        }
+        return tester;
+    }
+}
+