assert 订阅
assert,英语单词,动词,作动词时意为"维护,坚持;断言;主张;声称" [1] 展开全文
assert,英语单词,动词,作动词时意为"维护,坚持;断言;主张;声称" [1]
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中文名
assert
词    性
动词
assert单词发音
英[əˈsɜːt]美[əˈsɜːrt] [1] 
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  • 1. assert 函数说明: Assert statements are a convenient way to insert debugging assertions into a program: assert语句是一种插入调试断点到程序的一种便捷的方式。 使用范例: assert 3 == 3 assert 1 == ...
  • C语言中的ASSERT(断言)宏是嵌入式软件开发人员可以使用的最好的调试工具之一。虽然ASSERT功能强大,但我很少看到它被实施,并且在一些使用它的案例中,它的实施要么是有瑕疵的要么是不正确的。以下一些技巧将不仅...
  • 错误的想法是替换assert_equal和所有不计其数的assert\_this , assert\_that , should\_something库方法,这些方法仅存在于给出失败消息而不仅仅是“断言失败”的情况下。 Wrong一口气替换了所有这些,因为如果您...
  • 相似的断言是一个通过使用相似的差异来增强默认断言体验的板条箱。 ...相似的asserts :: assert_eq!(引用,(0..4).collect :: >()); }相关项目insta快照测试库相似的差异库许可证和链接文档
  • assert [removed]表达式) 等价于: if not expression: raise AssertionError(arguments) 【实例1】 >>> assert True # 条件为 true 正常执行 >>> assert False # 条件为 false 触发异常 Trac
  • assert是断言的意思,解释为:我断定这个程序执行之后或者之前会有这样的结果,如果不是,那就扔出一个错误。 语法: assert expression [, arguments] assert 表达式 [, 参数] 举例: def foo(s): n = int(s) ...
  • 主要介绍了C++ 中assert()函数用法总结的相关资料,需要的朋友可以参考下
  • 不再需要assert_eq或assert_ne ,只需编写assert!(1 + 1 == 2) ,甚至assert_ne assert!(1 + 1 == 2) assert!(1 + 1 > 1) ! 您可以测试模式匹配: assert!(let Err(_) = File::open("/non/existing/file")) 。 ...
  • assert failed. cond=”uid != 0″, msg=”Assert in TypeId::LookupByName: sender not found”, file=../src/core/model/type-id.cc, line=828 terminate called without an active exception 前提: 使用了自定义...
  • var assertText = require ( 'assert-text' ) ; assertText . equal ( 'what a wonderful\n' + 'idea for the\n' + 'module' , 'what a wonderful\n' + 'idea for a\n' + 'module' ) ; 上面的示例将抛出: ...
  • assert_matches 提供一个assert_matches宏,它测试值是否与给定的模式匹配,如果匹配失败,则会引起恐慌。 #[macro_use] extern crate assert_matches; #[derive(Debug)] enum Foo { A ( i32 ), B ( i32 ), } let...
  • 详细介绍了Java陷阱之assert关键字,有需要的朋友可以参考一下
  • assert宏的原型定义在<assert>中,其作用是如果它的条件返回错误,则终止程序执行,原型定义: #include <assert> void assert( int expression );  assert的作用是现计算表达式 expression ,如果其值为假(即为0...
  • assert

    千次阅读 2019-07-15 16:58:23
    关于assert系统函数 assert使用 assert一般用于检测函数参数的合法性,攻城狮们可以自己封装Assert作为宏,比如: #define Assert(condition) { if (condition){ NUll; } else { Assert(__FILE__ , __LINE__...

    关于assert系统函数

    1. assert使用

    assert一般用于检测函数参数的合法性,攻城狮们可以自己封装Assert作为宏,比如:

    #define Assert(condition)
    do {
    	if (condition){
    		NUll;
    	} else {
    		Assert(__FILE__ , __LINE__);
    	}
    } while(0)
    

    调用时,像这样:

    void Test(unsigned char *str)
    {
        ASSERT(str != NULL);
        /*函数处理代码*/
    }
    
    1. assert注意事项
      assert中不应该使用函数调用、变量赋值、使用变量修改符(++、- -等)。比如:
    for (i = 0; i < 100; i++){
    	Assert(do_something() == 0);
    }
    

    那么每次assert就会展开到上面介绍的do while中,会非常影响性能。
    正确的是assert中只判断bool型的返回值即可:

    bool ret;
    for (i = 0; i < 100; i++){
    	ret = do_something();
    	Assert(ret);
    }
    
    1. PS

    注意,不要滥用assertions 。请不要使用它来检查你「认为应该为真」的条件,请只使用它来检查「一定必须为真」的条件。滥用assertions 可能会造成难以维护的重复逻辑。在一段逻辑中加入assertions 是有好处的,因为它迫使你重新考虑这段代 码的约束条件。如果「不满足这些约朿条件,程序也可以正常运行」,assertions 就不会带给你任何帮助,只会把代码变得混乱,并且有可能妨碍以后的修改。你应该常常问自己:如果assertions 所指示的约束条件不能满足,代码是否仍能正常运行?如果可以,就把assertions 拿掉。(来自:https://www.kancloud.cn/sstd521/refactor/194285)

    llinux高级编程(中文版).pdf

    展开全文
  • 如何使用assert_param

    2020-08-03 13:46:05
    本文介绍了一种使用软件调试stm32的高效率的方法。
  • 使用assert断言是学习python一个非常好的习惯,python assert 断言句语格式及用法很简单。在没完善一个程序之前,我们不知道程序在哪里会出错,与其让它在运行最崩溃,不如在出现错误条件时就崩溃,这时候就需要...
  • 什么是power-assert ? 是JavaScript中“ Power Assert”概念的实现。 通过标准的接口提供描述性断言消息。 没有API是最好的API 。 借助强大的功能,您无需学习许多断言库API (大多数情况下,您需要记住的只是一...
  • systemverilog设计: assert 应用的例子(ncverilog测试过的)代码 测试 , 设计
  • Assert

    千次阅读 2018-12-26 17:47:37
    Assert import org.apache.commons.lang.StringUtils; import java.util.Collection; import java.util.Map; /** * @author zhoulin * @date 2018/12/26 */ public abstract class Assert { /** * Assert a ...

    Assert

    import org.apache.commons.lang.StringUtils;
    import java.util.Collection;
    import java.util.Map;
    
    /**
     * @author zhoulin
     * @date 2018/12/26
     */
    public abstract class Assert {
    
    	/**
    	 * Assert a boolean expression, throwing <code>IllegalArgumentException</code>
    	 * if the test result is <code>false</code>.
    	 * <pre class="code">Assert.isTrue(i > 0, "The value must be greater than zero");</pre>
    	 * @param expression a boolean expression
    	 * @param message the exception message to use if the assertion fails
    	 * @throws DiebuIllegalArgumentException if expression is <code>false</code>
    	 */
    	public static void isTrue(boolean expression, String message) {
    		if (!expression) {
    			throw new DiebuIllegalArgumentException(message);
    		}
    	}
    
    	/**
    	 * Assert a boolean expression, throwing <code>IllegalArgumentException</code>
    	 * if the test result is <code>false</code>.
    	 * <pre class="code">Assert.isTrue(i > 0);</pre>
    	 * @param expression a boolean expression
    	 * @throws DiebuIllegalArgumentException if expression is <code>false</code>
    	 */
    	public static void isTrue(boolean expression) {
    		isTrue(expression, "[Assertion failed] - this expression must be true");
    	}
    
    	/**
    	 * Assert that an object is <code>null</code> .
    	 * <pre class="code">Assert.isNull(value, "The value must be null");</pre>
    	 * @param object the object to check
    	 * @param message the exception message to use if the assertion fails
    	 * @throws DiebuIllegalArgumentException if the object is not <code>null</code>
    	 */
    	public static void isNull(Object object, String message) {
    		if (object != null) {
    			throw new DiebuIllegalArgumentException(message);
    		}
    	}
    
    	/**
    	 * Assert that an object is <code>null</code> .
    	 * <pre class="code">Assert.isNull(value);</pre>
    	 * @param object the object to check
    	 * @throws DiebuIllegalArgumentException if the object is not <code>null</code>
    	 */
    	public static void isNull(Object object) {
    		isNull(object, "[Assertion failed] - the object argument must be null");
    	}
    
    	/**
    	 * Assert that an object is not <code>null</code> .
    	 * <pre class="code">Assert.notNull(clazz, "The class must not be null");</pre>
    	 * @param object the object to check
    	 * @param message the exception message to use if the assertion fails
    	 * @throws DiebuIllegalArgumentException if the object is <code>null</code>
    	 */
    	public static void notNull(Object object, String message) {
    		if (object == null) {
    			throw new DiebuIllegalArgumentException(message);
    		}
    	}
    
    	/**
    	 * Assert that an object is not <code>null</code> .
    	 * <pre class="code">Assert.notNull(clazz);</pre>
    	 * @param object the object to check
    	 * @throws DiebuIllegalArgumentException if the object is <code>null</code>
    	 */
    	public static void notNull(Object object) {
    		notNull(object, "[Assertion failed] - this argument is required; it must not be null");
    	}
    
    	/**
    	 * Assert that the given String is not empty; that is,
    	 * it must not be <code>null</code> and not the empty String.
    	 * <pre class="code">Assert.hasLength(name, "Name must not be empty");</pre>
    	 * @param text the String to check
    	 * @param message the exception message to use if the assertion fails
    	 * @see StringUtils#isNotEmpty
    	 */
    	public static void isNotEmpty(String text, String message) {
    		if (!StringUtils.isNotEmpty(text)) {
    			throw new DiebuIllegalArgumentException(message);
    		}
    	}
    
    	/**
    	 * Assert that the given String is not empty; that is,
    	 * it must not be <code>null</code> and not the empty String.
    	 * <pre class="code">Assert.hasLength(name);</pre>
    	 * @param text the String to check
    	 * @see StringUtils#isNotEmpty
    	 */
    	public static void isNotEmpty(String text) {
    		isNotEmpty(text,
    				"[Assertion failed] - this String argument must have length; it must not be null or empty");
    	}
    
    	/**
    	 * Assert that the given String has valid text content; that is, it must not
    	 * be <code>null</code> and must contain at least one non-whitespace character.
    	 * <pre class="code">Assert.hasText(name, "'name' must not be empty");</pre>
    	 * @param text the String to check
    	 * @param message the exception message to use if the assertion fails
    	 * @see StringUtils#isNotBlank
    	 */
    	public static void isNotBlank(String text, String message) {
    		if (!StringUtils.isNotBlank(text)) {
    			throw new DiebuIllegalArgumentException(message);
    		}
    	}
    
    	/**
    	 * Assert that the given String has valid text content; that is, it must not
    	 * be <code>null</code> and must contain at least one non-whitespace character.
    	 * <pre class="code">Assert.hasText(name, "'name' must not be empty");</pre>
    	 * @param text the String to check
    	 * @see StringUtils#hasText
    	 */
    	public static void isNotBlank(String text) {
    		isNotBlank(text,
    				"[Assertion failed] - this String argument must have text; it must not be null, empty, or blank");
    	}
    
    	/**
    	 * Assert that the given text does not contain the given substring.
    	 * <pre class="code">Assert.doesNotContain(name, "rod", "Name must not contain 'rod'");</pre>
    	 * @param textToSearch the text to search
    	 * @param substring the substring to find within the text
    	 * @param message the exception message to use if the assertion fails
    	 */
    	public static void doesNotContain(String textToSearch, String substring, String message) {
    		if (StringUtils.isNotEmpty(textToSearch) && StringUtils.isNotEmpty(substring) &&
    				textToSearch.indexOf(substring) != -1) {
    			throw new DiebuIllegalArgumentException(message);
    		}
    	}
    
    	/**
    	 * Assert that the given text does not contain the given substring.
    	 * <pre class="code">Assert.doesNotContain(name, "rod");</pre>
    	 * @param textToSearch the text to search
    	 * @param substring the substring to find within the text
    	 */
    	public static void doesNotContain(String textToSearch, String substring) {
    		doesNotContain(textToSearch, substring,
    				"[Assertion failed] - this String argument must not contain the substring [" + substring + "]");
    	}
    
    
    	/**
    	 * Assert that an array has elements; that is, it must not be
    	 * <code>null</code> and must have at least one element.
    	 * <pre class="code">Assert.notEmpty(array, "The array must have elements");</pre>
    	 * @param array the array to check
    	 * @param message the exception message to use if the assertion fails
    	 * @throws DiebuIllegalArgumentException if the object array is <code>null</code> or has no elements
    	 */
    	public static void notEmpty(Object[] array, String message) {
    		if (array == null || array.length == 0) {
    			throw new DiebuIllegalArgumentException(message);
    		}
    	}
    
    	/**
    	 * Assert that an array has elements; that is, it must not be
    	 * <code>null</code> and must have at least one element.
    	 * <pre class="code">Assert.notEmpty(array);</pre>
    	 * @param array the array to check
    	 * @throws DiebuIllegalArgumentException if the object array is <code>null</code> or has no elements
    	 */
    	public static void notEmpty(Object[] array) {
    		notEmpty(array, "[Assertion failed] - this array must not be empty: it must contain at least 1 element");
    	}
    
    	/**
    	 * Assert that an array has no null elements.
    	 * Note: Does not complain if the array is empty!
    	 * <pre class="code">Assert.noNullElements(array, "The array must have non-null elements");</pre>
    	 * @param array the array to check
    	 * @param message the exception message to use if the assertion fails
    	 * @throws DiebuIllegalArgumentException if the object array contains a <code>null</code> element
    	 */
    	public static void noNullElements(Object[] array, String message) {
    		if (array != null) {
    			for (int i = 0; i < array.length; i++) {
    				if (array[i] == null) {
    					throw new DiebuIllegalArgumentException(message);
    				}
    			}
    		}
    	}
    
    	/**
    	 * Assert that an array has no null elements.
    	 * Note: Does not complain if the array is empty!
    	 * <pre class="code">Assert.noNullElements(array);</pre>
    	 * @param array the array to check
    	 * @throws DiebuIllegalArgumentException if the object array contains a <code>null</code> element
    	 */
    	public static void noNullElements(Object[] array) {
    		noNullElements(array, "[Assertion failed] - this array must not contain any null elements");
    	}
    
    	/**
    	 * Assert that a collection has elements; that is, it must not be
    	 * <code>null</code> and must have at least one element.
    	 * <pre class="code">Assert.notEmpty(collection, "Collection must have elements");</pre>
    	 * @param collection the collection to check
    	 * @param message the exception message to use if the assertion fails
    	 * @throws IllegalArgumentException if the collection is <code>null</code> or has no elements
    	 */
    	public static void notEmpty(Collection collection, String message) {
    		if (collection == null || collection.isEmpty()) {
    			throw new DiebuIllegalArgumentException(message);
    		}
    	}
    
    	/**
    	 * Assert that a collection has elements; that is, it must not be
    	 * <code>null</code> and must have at least one element.
    	 * <pre class="code">Assert.notEmpty(collection, "Collection must have elements");</pre>
    	 * @param collection the collection to check
    	 * @throws DiebuIllegalArgumentException if the collection is <code>null</code> or has no elements
    	 */
    	public static void notEmpty(Collection collection) {
    		notEmpty(collection,
    				"[Assertion failed] - this collection must not be empty: it must contain at least 1 element");
    	}
    
    	/**
    	 * Assert that a Map has entries; that is, it must not be <code>null</code>
    	 * and must have at least one entry.
    	 * <pre class="code">Assert.notEmpty(map, "Map must have entries");</pre>
    	 * @param map the map to check
    	 * @param message the exception message to use if the assertion fails
    	 * @throws DiebuIllegalArgumentException if the map is <code>null</code> or has no entries
    	 */
    	public static void notEmpty(Map map, String message) {
    		if (map == null || map.isEmpty()) {
    			throw new DiebuIllegalArgumentException(message);
    		}
    	}
    
    	/**
    	 * Assert that a Map has entries; that is, it must not be <code>null</code>
    	 * and must have at least one entry.
    	 * <pre class="code">Assert.notEmpty(map);</pre>
    	 * @param map the map to check
    	 * @throws DiebuIllegalArgumentException if the map is <code>null</code> or has no entries
    	 */
    	public static void notEmpty(Map map) {
    		notEmpty(map, "[Assertion failed] - this map must not be empty; it must contain at least one entry");
    	}
    
    
    	/**
    	 * Assert that the provided object is an instance of the provided class.
    	 * <pre class="code">Assert.instanceOf(Foo.class, foo);</pre>
    	 * @param clazz the required class
    	 * @param obj the object to check
    	 * @throws DiebuIllegalArgumentException if the object is not an instance of clazz
    	 * @see Class#isInstance
    	 */
    	public static void isInstanceOf(Class clazz, Object obj) {
    		isInstanceOf(clazz, obj, "");
    	}
    
    	/**
    	 * Assert that the provided object is an instance of the provided class.
    	 * <pre class="code">Assert.instanceOf(Foo.class, foo);</pre>
    	 * @param type the type to check against
    	 * @param obj the object to check
    	 * @param message a message which will be prepended to the message produced by
    	 * the function itself, and which may be used to provide context. It should
    	 * normally end in a ": " or ". " so that the function generate message looks
    	 * ok when prepended to it.
    	 * @throws DiebuIllegalArgumentException if the object is not an instance of clazz
    	 * @see Class#isInstance
    	 */
    	public static void isInstanceOf(Class type, Object obj, String message) {
    		notNull(type, "Type to check against must not be null");
    		if (!type.isInstance(obj)) {
    			throw new DiebuIllegalArgumentException(message +
    					"Object of class [" + (obj != null ? obj.getClass().getName() : "null") +
    					"] must be an instance of " + type);
    		}
    	}
    
    	/**
    	 * Assert that <code>superType.isAssignableFrom(subType)</code> is <code>true</code>.
    	 * <pre class="code">Assert.isAssignable(Number.class, myClass);</pre>
    	 * @param superType the super type to check
    	 * @param subType the sub type to check
    	 * @throws DiebuIllegalArgumentException if the classes are not assignable
    	 */
    	public static void isAssignable(Class superType, Class subType) {
    		isAssignable(superType, subType, "");
    	}
    
    	/**
    	 * Assert that <code>superType.isAssignableFrom(subType)</code> is <code>true</code>.
    	 * <pre class="code">Assert.isAssignable(Number.class, myClass);</pre>
    	 * @param superType the super type to check against
    	 * @param subType the sub type to check
    	 * @param message a message which will be prepended to the message produced by
    	 * the function itself, and which may be used to provide context. It should
    	 * normally end in a ": " or ". " so that the function generate message looks
    	 * ok when prepended to it.
    	 * @throws DiebuIllegalArgumentException if the classes are not assignable
    	 */
    	public static void isAssignable(Class superType, Class subType, String message) {
    		notNull(superType, "Type to check against must not be null");
    		if (subType == null || !superType.isAssignableFrom(subType)) {
    			throw new DiebuIllegalArgumentException(message + subType + " is not assignable to " + superType);
    		}
    	}
    
    
    	/**
    	 * Assert a boolean expression, throwing <code>IllegalStateException</code>
    	 * if the test result is <code>false</code>. Call isTrue if you wish to
    	 * throw IllegalArgumentException on an assertion failure.
    	 * <pre class="code">Assert.state(id == null, "The id property must not already be initialized");</pre>
    	 * @param expression a boolean expression
    	 * @param message the exception message to use if the assertion fails
    	 * @throws DiebuIllegalArgumentException if expression is <code>false</code>
    	 */
    	public static void state(boolean expression, String message) {
    		if (!expression) {
    			throw new DiebuIllegalArgumentException(message);
    		}
    	}
    
    	/**
    	 * Assert a boolean expression, throwing {@link DiebuIllegalArgumentException}
    	 * if the test result is <code>false</code>.
    	 * <p>Call {@link #isTrue(boolean)} if you wish to
    	 * throw {@link DiebuIllegalArgumentException} on an assertion failure.
    	 * <pre class="code">Assert.state(id == null);</pre>
    	 * @param expression a boolean expression
    	 * @throws DiebuIllegalArgumentException if the supplied expression is <code>false</code>
    	 */
    	public static void state(boolean expression) {
    		state(expression, "[Assertion failed] - this state invariant must be true");
    	}
    }
    
    

    DiebuException

    /**
     * @author zhoulin
     * @date 2018/12/26
     */
    public class DiebuException extends  RuntimeException{
        private static final String DEFAULT_CODE = "basic";
    
        private String errorCode;
    
        public DiebuException(String message){
            super(message);
            this.errorCode = DEFAULT_CODE;
        }
    
        public DiebuException(String message, String errorCode){
            super(message);
            this.errorCode = errorCode;
        }
    
        public String getCode() {
            return this.errorCode;
        }
    }
    

    DiebuRuntimeException

    /**
     * @author zhoulin
     * @date 2018/12/26
     */
    public class DiebuRuntimeException extends  DiebuException{
        public DiebuRuntimeException(String message){
            super(message);
        }
    }
    
    

    DiebuIllegalArgumentException

    /**
     * @author zhoulin
     * @date 2018/12/26
     */
    public class DiebuIllegalArgumentException extends  DiebuRuntimeException{
        public DiebuIllegalArgumentException(String message) {
            super(message);
        }
    }
    
    
    展开全文
  • power-assert演示项目:JavaScript 中的“Power Assert”。 有关更多文档,请参阅项目。 如何使用 (如果没有安装 grunt) npm install -g grunt-cli git clone ...
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  • Node-assert 是 Node.JS 目前缺乏的断言框架。 它通过以下方式扩充了 assert 模块: 添加一组辅助函数来执行类型检查 添加使用 NODE_ASSERT 环境变量启用/禁用断言的能力 用法 将 NODE_ASSERT 环境变量设置为...
  • require "assert" class MyTests < Assert :: Context test "something" do assert_that ( 1 ) . equals ( 1 ) end end $ assert test/my_tests.rb Loaded suite (1 test) Running tests in random order, ...
  • Assert.js 数据格式断言。 Installation $ npm install --save azzert Usage const assert = require('azzert'); function someFunction(data) { assert(data, { id: 'n', name: 's,r' phones: ['s,r'] }); //...
  • 本文实例讲解了C标准库<assert>的实现过程及相关用法。分享给大家供大家参考。具体分析如下: 一、背景知识 头文件<assert>唯一的目的就是提供assert宏定义,可以在程序中关键的地方使用这个宏来进行断言。如果一处...
  • 断言(assert)的作用是用来判断程序运行的正确性,确保程序运行的行为与我们理解的一致。其调用形式为assert(logic expression),如果逻辑表达式为假,则调用abort()终止程序的运行。 查看MSDN帮助文档,可以得到...
  • pip install delayed-assert 从主安装 pip install git+https://github.com/pr4bh4sh/delayed-assert 用途 有关用法,请参见example_unittest.py 。 在Lambda中使用断言库 将断言调用传递为 expect ( lambda : ...
  • 本文实例讲述了Node.js assert断言原理与用法。分享给大家供大家参考,具体如下: node.js官方API中文版 http://nodeapi.ucdok.com/#/api/assert.html assert 模块主要用于编写程序的单元测试时使用,通过断言可以...
  • assert_fs断言文件系统-用于测试的文件系统固定装置和断言。 assert_fs旨在简化设置文件以供测试使用,以使用A assert_fs断言文件系统-用于测试的文件系统固定装置和断言。 assert_fs旨在简化设置文件以供测试使用以...

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