Examples of java.util.jar.Attributes.containsValue()

java.util.jar.Attributes.containsValue()
Returns true if this Map maps one or more attribute names (keys) to the specified value. @param value the attribute value @return true if this Map maps one or more attribute names tothe specified value

    public void test_putLjava_lang_ObjectLjava_lang_Object_Null() {


        Attributes attribute = new Attributes();


        assertFalse(attribute.containsKey(null));
        assertFalse(attribute.containsValue(null));
        attribute.put(null, null);
        attribute.put(null, null);
        assertEquals(1, attribute.size());
        assertTrue(attribute.containsKey(null));
        assertTrue(attribute.containsValue(null));

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        assertFalse(attribute.containsValue(null));
        attribute.put(null, null);
        attribute.put(null, null);
        assertEquals(1, attribute.size());
        assertTrue(attribute.containsKey(null));
        assertTrue(attribute.containsValue(null));
        assertNull(attribute.get(null));


        String value = "It's null";
        attribute.put(null, value);
        assertEquals(1, attribute.size());

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    public void test_putLjava_lang_ObjectLjava_lang_Object_Null() {


        Attributes attribute = new Attributes();


        assertFalse(attribute.containsKey(null));
        assertFalse(attribute.containsValue(null));
        attribute.put(null, null);
        attribute.put(null, null);
        assertEquals(1, attribute.size());
        assertTrue(attribute.containsKey(null));
        assertTrue(attribute.containsValue(null));

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        assertFalse(attribute.containsValue(null));
        attribute.put(null, null);
        attribute.put(null, null);
        assertEquals(1, attribute.size());
        assertTrue(attribute.containsKey(null));
        assertTrue(attribute.containsValue(null));
        assertNull(attribute.get(null));


        String value = "It's null";
        attribute.put(null, value);
        assertEquals(1, attribute.size());

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