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Call to ‘asList’ with only one argument could be replaced with ‘singletonList’ (#9288)

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Motivation:

asList should only be used if there are multiple elements.

Modification:

Call to asList with only one argument could be replaced with singletonList

Result:

Cleaner code and a bit of memory savings
This commit is contained in:
jimin 2019-06-27 03:06:48 +08:00 committed by Norman Maurer
parent 52169cba95
commit 6bd8f0502d
3 changed files with 12 additions and 11 deletions
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6
codec-http/src/test/java/io/netty/handler/codec/http/CombinedHttpHeadersTest.java
View File

@ -196,7 +196,7 @@ public class CombinedHttpHeadersTest {
public void addIterableCsvEmpty() {
final CombinedHttpHeaders headers = newCombinedHttpHeaders();
headers.add(HEADER_NAME, Collections.<CharSequence>emptyList());
assertEquals(Arrays.asList(""), headers.getAll(HEADER_NAME));
assertEquals(Collections.singletonList(""), headers.getAll(HEADER_NAME));
}
@Test
@ -294,9 +294,9 @@ public class CombinedHttpHeadersTest {
headers.set(HEADER_NAME, Arrays.asList("\"a\"", "\"b\"", "\"c\""));
assertEquals(Arrays.asList("a", "b", "c"), headers.getAll(HEADER_NAME));
headers.set(HEADER_NAME, "a,b,c");
assertEquals(Arrays.asList("a,b,c"), headers.getAll(HEADER_NAME));
assertEquals(Collections.singletonList("a,b,c"), headers.getAll(HEADER_NAME));
headers.set(HEADER_NAME, "\"a,b,c\"");
assertEquals(Arrays.asList("a,b,c"), headers.getAll(HEADER_NAME));
assertEquals(Collections.singletonList("a,b,c"), headers.getAll(HEADER_NAME));
}
@Test

9
common/src/test/java/io/netty/util/internal/StringUtilTest.java
View File

@ -18,6 +18,7 @@ package io.netty.util.internal;
import org.junit.Test;
import java.util.Arrays;
import java.util.Collections;
import static io.netty.util.internal.StringUtil.NEWLINE;
import static io.netty.util.internal.StringUtil.commonSuffixOfLength;
@ -446,15 +447,15 @@ public class StringUtilTest {
@Test
public void testUnescapeCsvFields() {
assertEquals(Arrays.asList(""), unescapeCsvFields(""));
assertEquals(Collections.singletonList(""), unescapeCsvFields(""));
assertEquals(Arrays.asList("", ""), unescapeCsvFields(","));
assertEquals(Arrays.asList("a", ""), unescapeCsvFields("a,"));
assertEquals(Arrays.asList("", "a"), unescapeCsvFields(",a"));
assertEquals(Arrays.asList("\""), unescapeCsvFields("\"\"\"\""));
assertEquals(Collections.singletonList("\""), unescapeCsvFields("\"\"\"\""));
assertEquals(Arrays.asList("\"", "\""), unescapeCsvFields("\"\"\"\",\"\"\"\""));
assertEquals(Arrays.asList("netty"), unescapeCsvFields("netty"));
assertEquals(Collections.singletonList("netty"), unescapeCsvFields("netty"));
assertEquals(Arrays.asList("hello", "netty"), unescapeCsvFields("hello,netty"));
assertEquals(Arrays.asList("hello,netty"), unescapeCsvFields("\"hello,netty\""));
assertEquals(Collections.singletonList("hello,netty"), unescapeCsvFields("\"hello,netty\""));
assertEquals(Arrays.asList("hello", "netty"), unescapeCsvFields("\"hello\",\"netty\""));
assertEquals(Arrays.asList("a\"b", "c\"d"), unescapeCsvFields("\"a\"\"b\",\"c\"\"d\""));
assertEquals(Arrays.asList("a\rb", "c\nd"), unescapeCsvFields("\"a\rb\",\"c\nd\""));

8
handler/src/test/java/io/netty/handler/ssl/SSLEngineTest.java
View File

@ -1918,13 +1918,13 @@ public abstract class SSLEngineTest {
final String sharedCipher = "TLS_RSA_WITH_AES_128_CBC_SHA";
clientSslCtx = SslContextBuilder.forClient()
.trustManager(InsecureTrustManagerFactory.INSTANCE)
.ciphers(Arrays.asList(sharedCipher))
.ciphers(Collections.singletonList(sharedCipher))
.protocols(PROTOCOL_TLS_V1_2, PROTOCOL_TLS_V1)
.sslProvider(sslClientProvider())
.build();
serverSslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey())
.ciphers(Arrays.asList(sharedCipher))
.ciphers(Collections.singletonList(sharedCipher))
.protocols(PROTOCOL_TLS_V1_2, PROTOCOL_TLS_V1)
.sslProvider(sslServerProvider())
.build();
@ -1949,13 +1949,13 @@ public abstract class SSLEngineTest {
final String sharedCipher = "TLS_RSA_WITH_AES_128_CBC_SHA";
clientSslCtx = SslContextBuilder.forClient()
.trustManager(InsecureTrustManagerFactory.INSTANCE)
.ciphers(Arrays.asList(sharedCipher), SupportedCipherSuiteFilter.INSTANCE)
.ciphers(Collections.singletonList(sharedCipher), SupportedCipherSuiteFilter.INSTANCE)
.protocols(PROTOCOL_TLS_V1_2, PROTOCOL_TLS_V1)
.sslProvider(sslClientProvider())
.build();
serverSslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey())
.ciphers(Arrays.asList(sharedCipher), SupportedCipherSuiteFilter.INSTANCE)
.ciphers(Collections.singletonList(sharedCipher), SupportedCipherSuiteFilter.INSTANCE)
.protocols(PROTOCOL_TLS_V1_2, PROTOCOL_TLS_V1)
.sslProvider(sslServerProvider())
.build();