blocks|key|1225417|text|我会写道：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1225418|assertTrue("mynum+is+out+of+range:+"+%2B+mynum,+min+<=+mynum+&&+mynum+<=+max);|code-block|syntax|javascript|1225419|但从技术上讲，你只需要：|1225420|assertTrue(min+<=+mynum+&&+mynum+<=+max);|1225421|无论哪种方式，请确保编写的是&&而不是and。|offset|length|style|CODE|1225422|entityMap^0|0|0|0|0|E|2|J|3|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@$M|X|N|Y|O|P]|$M|Z|N|10|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|R|$]]

I'd write:

<pre><code>assertTrue("mynum is out of range: " + mynum, min &lt;= mynum &amp;&amp; mynum &lt;= max);
</code></pre>

but technically you just need:

<pre><code>assertTrue(min &lt;= mynum &amp;&amp; mynum &lt;= max);
</code></pre>

Either way, be sure to write <code>&amp;&amp;</code> and not <code>and</code>.

blocks|key|5264702|text|正如乔纳森所说，我将使用AssertJ，但使用更简单的断言:)|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|5264703|+assertThat(mynum).isBetween(min,+max);|code-block|syntax|javascript|5264704|我认为这是最酷的解决方案:)|5264705|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/joel-costigliola/assertj-core/wiki^0|C|7|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

I will use <a href="https://github.com/joel-costigliola/assertj-core/wiki" rel="noreferrer">AssertJ</a> as Jonathan said, but with simpler assertions :)

<pre><code> assertThat(mynum).isBetween(min, max);
</code></pre>

I think this is the coolest solution :)

blocks|key|1225459|text|你也可以使用Hamcrest库，它的可读性更好。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1225460|assertThat(mynum,greaterThanOrEqualTo(min));

assertThat(mynum,lessThanOrEqualTo(max));|code-block|syntax|javascript|1225461|这些行可以通过allOf合并，如下所示：|style|CODE|1225462|assertThat(mynum,+allOf(greaterThanOrEqualTo(min),lessThanOrEqualTo(max)));|1225463|entityMap|0|LINK|mutability|MUTABLE|url|http://code.google.com/p/hamcrest/wiki/Tutorial^0|6|8|0|0|0|7|5|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|11|8|@$A|12|B|13|K|L]]|9|@]|C|$]]|$1|M|3|N|5|F|7|14|8|@]|9|@]|C|$G|H]]|$1|O|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

you can use <a href="http://code.google.com/p/hamcrest/wiki/Tutorial" rel="nofollow noreferrer">Hamcrest</a> library too ,this is more readable.
<pre><code>assertThat(mynum,greaterThanOrEqualTo(min));

assertThat(mynum,lessThanOrEqualTo(max));
</code></pre>
Those lines can be merged via <code>allOf</code> like this:
<pre><code>assertThat(mynum, allOf(greaterThanOrEqualTo(min),lessThanOrEqualTo(max)));
</code></pre>

blocks|key|1865609|text|在this上扩展答案:你可以用allOf把两者结合起来。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1865610|assertThat(mynum,+allOf(greaterThanOrEqualTo(min),lessThanOrEqualTo(max)));|code-block|syntax|javascript|1865611|在Hamcrest中，OR等价物是anyOf。|1865612|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/9714324/891292^0|F|5|1|4|0|0|0|H|5|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|F|3|G|5|H|7|10|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|11|8|@$9|12|A|13|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

Extending on <a href="https://stackoverflow.com/a/9714324/891292">this</a> answer: you can combine the two with <code>allOf</code>.

<pre><code>assertThat(mynum, allOf(greaterThanOrEqualTo(min),lessThanOrEqualTo(max)));
</code></pre>

The OR equivalent in Hamcrest is <code>anyOf</code>.

blocks|key|1225550|text|如果你使用AssertJ，它会变得更具可读性：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1225551|assertThat(mynum).isGreaterThanOrEqualTo(min).isLessThanOrEqualTo(max);|code-block|syntax|javascript|1225552|此外，AssertionError优于assertTrue版本，因为您不需要提供描述，例如：|style|CODE|1225553|java.lang.AssertionError:+
Expecting:
+<10>
to+be+less+than+or+equal+to:
+<42>+|1225554|如果您使用的是Java8和AssertJ+3.0.0，则可以使用lambda来指定它：|1225555|assertThat(mynum).matches(actual+->+actual+>=+min+&&+actual+<=+max);|1225556|entityMap|0|LINK|mutability|MUTABLE|url|http://assertj.org/^0|5|7|0|0|0|3|E|J|A|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|D|3|E|5|F|7|14|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|15|8|@$A|16|B|17|K|L]|$A|18|B|19|K|L]]|9|@]|C|$]]|$1|M|3|N|5|F|7|1A|8|@]|9|@]|C|$G|H]]|$1|O|3|P|5|6|7|1B|8|@]|9|@]|C|$]]|$1|Q|3|R|5|F|7|1C|8|@]|9|@]|C|$G|H]]|$1|S|3|-4|5|6|7|1D|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]]]

If you use <a href="http://assertj.org/" rel="nofollow">AssertJ</a> it becomes even more readable:

<pre><code>assertThat(mynum).isGreaterThanOrEqualTo(min).isLessThanOrEqualTo(max);
</code></pre>

Plus the <code>AssertionError</code> beats the <code>assertTrue</code> version as you don't need to supply a description, e.g.:

<pre><code>java.lang.AssertionError: 
Expecting:
 &lt;10&gt;
to be less than or equal to:
 &lt;42&gt; 
</code></pre>

If you're using Java 8 and AssertJ 3.0.0, you can use a lambda to specify it:

<pre><code>assertThat(mynum).matches(actual -&gt; actual &gt;= min &amp;&amp; actual &lt;= max);
</code></pre>

blocks|key|1225349|text|assertTrue(min+<=+mynum+&&+mynum+<=+max,+"not+in+range");|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1225350|末尾的注释是可选的。除了&&之外，基本上与python版本相同。|1225351|entityMap^0|0|1L|0|C|2|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|P|8|@]|D|@]|E|$]]]|I|$]]

<code>assertTrue(min &lt;= mynum &amp;&amp; mynum &lt;= max, "not in range");</code>

the comment at the end is optional. Basically the same as the python version, except the <code>&amp;&amp;</code>.

blocks|key|1225367|text|使用&&而不是and；除此之外，您编写的内容应该是有效的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1225368|entityMap^0|2|2|7|3|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

Use <code>&amp;&amp;</code> rather than <code>and</code>; other than that, what you wrote should work.

blocks|key|844659|text|将AssertJ与isCloseTo(expected,+offset)配合使用|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|844660|BigDecimal+maxNegativeOffset+=+new+BigDecimal("0.0004");
BigDecimal+actual+=+new+BigDecimal("0.0005");
BigDecimal+maxPositiveOffset+=+new+BigDecimal("0.0006");

Offset<BigDecimal>+offset+=+Offset.offset(new+BigDecimal("0.0001"));

Assertions.assertThat(actual)
++.isCloseTo(maxNegativeOffset,+offset)
++.isCloseTo(maxPositiveOffset,+offset);|code-block|syntax|javascript|844661|Maven依赖项：https://mvnrepository.com/artifact/org.assertj/assertj-core|844662|entityMap|0|LINK|mutability|MUTABLE|url|https://mvnrepository.com/artifact/org.assertj/assertj-core^0|1|7|9|R|0|0|9|1N|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|D]]|E|@]|F|$]]|$1|G|3|H|5|I|7|10|8|@]|E|@]|F|$J|K]]|$1|L|3|M|5|6|7|11|8|@]|E|@$9|12|A|13|1|14]]|F|$]]|$1|N|3|-4|5|6|7|15|8|@]|E|@]|F|$]]]|O|$P|$5|Q|R|S|F|$T|U]]]]

Using AssertJ with <code>isCloseTo(expected, offset)</code>:
<pre><code>BigDecimal maxNegativeOffset = new BigDecimal(&quot;0.0004&quot;);
BigDecimal actual = new BigDecimal(&quot;0.0005&quot;);
BigDecimal maxPositiveOffset = new BigDecimal(&quot;0.0006&quot;);

Offset&lt;BigDecimal&gt; offset = Offset.offset(new BigDecimal(&quot;0.0001&quot;));

Assertions.assertThat(actual)
 .isCloseTo(maxNegativeOffset, offset)
 .isCloseTo(maxPositiveOffset, offset);
</code></pre>
Maven dependency: <a href="https://mvnrepository.com/artifact/org.assertj/assertj-core" rel="nofollow noreferrer">https://mvnrepository.com/artifact/org.assertj/assertj-core</a>

blocks|key|1225583|text|来自Truth|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1225584|import+static+com.google.common.truth.Truth.assertThat;

assertThat(actualDouble).isWithin(tolerance).of(expectedDouble);

assertThat(0.0999999).isWithin(1E-6).of(0.1d);

assertThat(90d).isWithin(10d).of(100d);+++//+success
assertThat(105d).isWithin(10d).of(100d);++//+success
assertThat(110d).isWithin(10d).of(100d);++//+success

assertThat(89d).isWithin(10d).of(100d);+++//+fails
assertThat(111d).isWithin(10d).of(100d);++//+fails
java.lang.AssertionError:+<111.0>+and+<100.0>+should+have+been+finite+values+within+<10.0>+of+each+other|code-block|syntax|javascript|1225585|entityMap|0|LINK|mutability|MUTABLE|url|https://truth.dev/faq#floating-point^0|2|5|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

From <a href="https://truth.dev/faq#floating-point" rel="nofollow noreferrer">Truth</a>
<pre><code>import static com.google.common.truth.Truth.assertThat;

assertThat(actualDouble).isWithin(tolerance).of(expectedDouble);

assertThat(0.0999999).isWithin(1E-6).of(0.1d);

assertThat(90d).isWithin(10d).of(100d); // success
assertThat(105d).isWithin(10d).of(100d); // success
assertThat(110d).isWithin(10d).of(100d); // success

assertThat(89d).isWithin(10d).of(100d); // fails
assertThat(111d).isWithin(10d).of(100d); // fails
java.lang.AssertionError: &lt;111.0&gt; and &lt;100.0&gt; should have been finite values within &lt;10.0&gt; of each other
</code></pre>

Coming to Java from Python. I recognize this is pretty basic, but it doesn't seem this has been asked here yet and Google is being coy with me.

In Python, I'd simply do something like this but Java objects:

<pre><code>assertTrue(min &lt;= mynum and mynum &lt;= max);
</code></pre>

In a Java unit test, how do I assert a number is within a given range?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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从Python到Java。我承认这是非常基本的，但似乎还没有人在这里问过这一点，谷歌对我很害羞。在Python中，我会简单地这样做，但是Java对象：assertTrue(min <= mynum and mynum <= max);

问在Java单元测试中，如何断言一个数字在给定的范围内？
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