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#340 optimize CPU and memory consumption in ClassCondition
My profiler shows that some remarkable % of CPU is spent on generating this string: (" " + c + " "). Now we check for CSS class without generating the new string. The code is longer, but faster.
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flying-saucer-core/src/test/java/org/xhtmlrenderer/css/newmatch/ClassConditionTest.java
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package org.xhtmlrenderer.css.newmatch; | ||
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import org.junit.jupiter.api.Test; | ||
import org.xhtmlrenderer.css.newmatch.Condition.ClassCondition; | ||
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import static org.assertj.core.api.Assertions.assertThat; | ||
import static org.xhtmlrenderer.css.newmatch.Condition.createClassCondition; | ||
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class ClassConditionTest { | ||
private final ClassCondition condition = (ClassCondition) createClassCondition("active"); | ||
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@Test | ||
void classAttributeEqualsExpectedClassName() { | ||
assertThat(condition.containsClassName("active")).isTrue(); | ||
assertThat(condition.containsClassName("activex")).isFalse(); | ||
} | ||
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@Test | ||
void classAttributeContainsExpectedClassName() { | ||
assertThat(condition.containsClassName("foo active bar")).isTrue(); | ||
assertThat(condition.containsClassName("foo active ")).isTrue(); | ||
assertThat(condition.containsClassName(" active bar")).isTrue(); | ||
assertThat(condition.containsClassName(" active ")).isTrue(); | ||
} | ||
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@Test | ||
void classAttributeStartsWithExpectedClassName() { | ||
assertThat(condition.containsClassName("active foo bar")).isTrue(); | ||
assertThat(condition.containsClassName(" active foo bar")).isTrue(); | ||
assertThat(condition.containsClassName("activex foo bar")).isFalse(); | ||
assertThat(condition.containsClassName("inactive foo bar")).isFalse(); | ||
} | ||
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@Test | ||
void classAttributeEndsWithExpectedClassName() { | ||
assertThat(condition.containsClassName("foo bar active")).isTrue(); | ||
assertThat(condition.containsClassName("foo bar active ")).isTrue(); | ||
assertThat(condition.containsClassName("foo bar inactive")).isFalse(); | ||
assertThat(condition.containsClassName("foo bar activeactive")).isFalse(); | ||
assertThat(condition.containsClassName("foo bar active-active")).isFalse(); | ||
assertThat(condition.containsClassName("foo bar active_active")).isFalse(); | ||
assertThat(condition.containsClassName("foo bar activex")).isFalse(); | ||
} | ||
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@Test | ||
void classAttributeContainsSimilarClassNames() { | ||
assertThat(condition.containsClassName("activex active inactive")).isTrue(); | ||
assertThat(condition.containsClassName("activex _active inactive")).isFalse(); | ||
} | ||
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@Test | ||
void classNotMatches() { | ||
assertThat(condition.containsClassName("")).isFalse(); | ||
assertThat(condition.containsClassName("_active")).isFalse(); | ||
assertThat(condition.containsClassName("active_")).isFalse(); | ||
assertThat(condition.containsClassName("act ive")).isFalse(); | ||
} | ||
} |