### Question:
Context implements Externalizable, Loggeable, Pausable, Cloneable { public <T> T get(Object key) { @SuppressWarnings("unchecked") T obj = (T) getMap().get(key); return obj; } Context(); void put(Object key, Object value); void put(Object key, Object value, boolean persist); void persist(Object key); void evict(Object key); T get(Object key); T get(Object key, T defValue); synchronized T remove(Object key); String getString(Object key); String getString(Object key, String defValue); void dump(PrintStream p, String indent); @SuppressWarnings("unchecked") synchronized T get(Object key, long timeout); void writeExternal(ObjectOutput out); void readExternal(ObjectInput in); @Override Context clone(); @Override boolean equals(Object o); @Override int hashCode(); synchronized Map<Object,Object> getMap(); synchronized LogEvent getLogEvent(); synchronized Profiler getProfiler(); synchronized Result getResult(); void log(Object msg); void checkPoint(String detail); void setPausedTransaction(PausedTransaction p); PausedTransaction getPausedTransaction(); PausedTransaction getPausedTransaction(long timeout); void setTimeout(long timeout); long getTimeout(); synchronized void resume(); boolean isTrace(); void setTrace(boolean trace);  }### Answer:
@Test public void testGet() throws Throwable { Context context = new Context(); context.put("", new Object(), true); Object result = context.get(Float.valueOf(-10.0F), -100L); assertNull(result, "result"); }
@Test public void testGet2() throws Throwable { Context context = new Context(); Object result = context.get(""); assertNull(result, "result"); }
@Test public void testGet8() throws Throwable { Context context = new Context(); Integer defValue = -1; Integer result = (Integer) context.get("", defValue); assertSame(defValue, result, "result"); }
@Test public void testGetThrowsNullPointerException() throws Throwable { Context context = new Context(); try { context.get("", 49L); fail("Expected NullPointerException to be thrown"); } catch (NullPointerException ex) { if (isJavaVersionAtMost(JAVA_14)) { assertNull(ex.getMessage(), "ex.getMessage()"); } else { assertEquals("Cannot invoke \"java.util.Map.get(Object)\" because \"this.map\" is null", ex.getMessage(), "ex.getMessage()"); } } }