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added code examples for @ConfigurationProperties

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This commit is contained in:
Tom Hombergs
2019-03-17 11:52:32 +01:00
parent 3207a3bc82
commit d660463d74
21 changed files with 717 additions and 0 deletions
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26
spring-boot/configuration/.gitignore vendored Normal file
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.gradle
/build/
!gradle/wrapper/gradle-wrapper.jar
### STS ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
### IntelliJ IDEA ###
.idea
*.iws
*.iml
*.ipr
/out/
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/

31
spring-boot/configuration/build.gradle Normal file
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plugins {
id 'org.springframework.boot' version '2.1.3.RELEASE'
id 'java'
}
apply plugin: 'io.spring.dependency-management'
group = 'io.reflectoring'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '11'
repositories {
mavenCentral()
}
dependencies {
implementation 'org.springframework.boot:spring-boot-starter'
implementation 'org.springframework.boot:spring-boot-starter-mail'
implementation 'org.springframework.boot:spring-boot-starter-validation'
compileOnly 'org.projectlombok:lombok'
annotationProcessor 'org.projectlombok:lombok'
annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
testImplementation('org.junit.jupiter:junit-jupiter:5.4.0')
testImplementation('org.springframework.boot:spring-boot-starter-test'){
exclude group: 'org.junit', module: 'junit'
}
}
test {
useJUnitPlatform()
}

172
spring-boot/configuration/gradlew vendored Normal file
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#!/usr/bin/env sh
##############################################################################
##
## Gradle start up script for UN*X
##
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn () {
echo "$*"
}
die () {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MINGW* )
msys=true
;;
NONSTOP* )
nonstop=true
;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD="java"
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin, switch paths to Windows format before running java
if $cygwin ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
JAVACMD=`cygpath --unix "$JAVACMD"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=$((i+1))
done
case $i in
(0) set -- ;;
(1) set -- "$args0" ;;
(2) set -- "$args0" "$args1" ;;
(3) set -- "$args0" "$args1" "$args2" ;;
(4) set -- "$args0" "$args1" "$args2" "$args3" ;;
(5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
(6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
(7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
(8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
(9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Escape application args
save () {
for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
echo " "
}
APP_ARGS=$(save "$@")
# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
cd "$(dirname "$0")"
fi
exec "$JAVACMD" "$@"

84
spring-boot/configuration/gradlew.bat vendored Normal file
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@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto init
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto init
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:init
@rem Get command-line arguments, handling Windows variants
if not "%OS%" == "Windows_NT" goto win9xME_args
:win9xME_args
@rem Slurp the command line arguments.
set CMD_LINE_ARGS=
set _SKIP=2
:win9xME_args_slurp
if "x%~1" == "x" goto execute
set CMD_LINE_ARGS=%*
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

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spring-boot/configuration/settings.gradle Normal file
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pluginManagement {
repositories {
gradlePluginPortal()
}
}
rootProject.name = 'configuration'

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spring-boot/configuration/src/main/java/io/reflectoring/configuration/ConfigurationApplication.java Normal file
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package io.reflectoring.configuration;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class ConfigurationApplication {
public static void main(String[] args) {
SpringApplication.run(ConfigurationApplication.class, args);
}
}

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spring-boot/configuration/src/main/java/io/reflectoring/configuration/mail/MailModuleConfiguration.java Normal file
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package io.reflectoring.configuration.mail;
import org.springframework.boot.context.properties.ConfigurationPropertiesBinding;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
@EnableConfigurationProperties(MailModuleProperties.class)
class MailModuleConfiguration {
@Bean
@ConfigurationPropertiesBinding
public WeightConverter weightConverter() {
return new WeightConverter();
}
}

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spring-boot/configuration/src/main/java/io/reflectoring/configuration/mail/MailModuleProperties.java Normal file
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package io.reflectoring.configuration.mail;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;
import java.time.Duration;
import java.util.List;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.DeprecatedConfigurationProperty;
import org.springframework.util.unit.DataSize;
import org.springframework.validation.annotation.Validated;
@ConfigurationProperties(prefix = "myapp.mail", ignoreInvalidFields = true, ignoreUnknownFields = false)
@Validated
class MailModuleProperties {
@NotNull
private Boolean enabled = Boolean.TRUE;
@NotEmpty
private String defaultSubject;
@NotNull
private Duration pauseBetweenMails;
@NotNull
private DataSize maxAttachmentSize;
@NotNull
private Weight maxAttachmentWeight;
@NotEmpty
private List<String> smtpServers;
@DeprecatedConfigurationProperty(reason = "not needed anymore", replacement = "none")
public String getDefaultSubject() {
return defaultSubject;
}
public Boolean getEnabled() {
return enabled;
}
public void setEnabled(Boolean enabled) {
this.enabled = enabled;
}
public void setDefaultSubject(String defaultSubject) {
this.defaultSubject = defaultSubject;
}
public Duration getPauseBetweenMails() {
return pauseBetweenMails;
}
public void setPauseBetweenMails(Duration pauseBetweenMails) {
this.pauseBetweenMails = pauseBetweenMails;
}
public DataSize getMaxAttachmentSize() {
return maxAttachmentSize;
}
public void setMaxAttachmentSize(DataSize maxAttachmentSize) {
this.maxAttachmentSize = maxAttachmentSize;
}
public List<String> getSmtpServers() {
return smtpServers;
}
public void setSmtpServers(List<String> smtpServers) {
this.smtpServers = smtpServers;
}
public Weight getMaxAttachmentWeight() {
return maxAttachmentWeight;
}
public void setMaxAttachmentWeight(Weight maxAttachmentWeight) {
this.maxAttachmentWeight = maxAttachmentWeight;
}
}

39
spring-boot/configuration/src/main/java/io/reflectoring/configuration/mail/Weight.java Normal file
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package io.reflectoring.configuration.mail;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Weight {
private static final Pattern PATTERN = Pattern.compile("^([0-9]+)(g|kg|t)$");
private long grams;
private Weight(long grams){
this.grams = grams;
}
public static Weight fromString(String string) {
Matcher matcher = PATTERN.matcher(string);
if (matcher.matches()) {
Long amount = Long.valueOf(matcher.group(1));
String unit = matcher.group(2);
switch (unit) {
case "g":
return new Weight(amount);
case "kg":
return new Weight(amount * 1_000);
case "t":
return new Weight(amount * 1_000 * 1_000);
default:
throw new IllegalArgumentException(String.format("invalid weight unit %s", unit));
}
}
throw new IllegalArgumentException(String.format("invalid weight string %s", string));
}
public long getGrams() {
return grams;
}
}

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spring-boot/configuration/src/main/java/io/reflectoring/configuration/mail/WeightConverter.java Normal file
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package io.reflectoring.configuration.mail;
import org.springframework.core.convert.converter.Converter;
class WeightConverter implements Converter<String, Weight> {
@Override
public Weight convert(String source) {
return Weight.fromString(source);
}
}

22
spring-boot/configuration/src/main/java/io/reflectoring/configuration/unknownandinvalidfield/UnkownAndInvalidFieldProperties.java Normal file
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package io.reflectoring.configuration.unknownandinvalidfield;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
@Component
@ConfigurationProperties(
prefix = "myapp.unknown-and-invalid-field-module",
ignoreUnknownFields = false,
ignoreInvalidFields = true)
class UnkownAndInvalidFieldProperties {
private Boolean enabled;
public Boolean getEnabled() {
return enabled;
}
public void setEnabled(Boolean enabled) {
this.enabled = enabled;
}
}

29
spring-boot/configuration/src/main/java/io/reflectoring/configuration/unknownfield/UnkownFieldProperties.java Normal file
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package io.reflectoring.configuration.unknownfield;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;
import java.time.Duration;
import java.util.List;
import io.reflectoring.configuration.mail.Weight;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.DeprecatedConfigurationProperty;
import org.springframework.stereotype.Component;
import org.springframework.util.unit.DataSize;
import org.springframework.validation.annotation.Validated;
@Component
@ConfigurationProperties(prefix = "myapp.unknownfield", ignoreUnknownFields = false)
class UnkownFieldProperties {
private Boolean enabled = Boolean.TRUE;
public Boolean getEnabled() {
return enabled;
}
public void setEnabled(Boolean enabled) {
this.enabled = enabled;
}
}

8
spring-boot/configuration/src/main/resources/application.properties Normal file
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myapp.mail.enabled=true
myapp.mail.defaultSubject=hello
myapp.mail.pauseBetweenMails=5s
myapp.mail.maxAttachmentSize=1MB
myapp.mail.smtpServers[0]=server1
myapp.mail.smtpServers[1]=server2
myapp.mail.maxAttachmentWeight=5kg
myapp.mail.foo=foo

16
spring-boot/configuration/src/test/java/io/reflectoring/configuration/ConfigurationApplicationTests.java Normal file
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package io.reflectoring.configuration;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit.jupiter.SpringExtension;
@ExtendWith(SpringExtension.class)
@SpringBootTest
class ConfigurationApplicationTests {
@Test
void contextLoads() {
}
}

38
spring-boot/configuration/src/test/java/io/reflectoring/configuration/mail/MailModuleTestWithAllProperties.java Normal file
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package io.reflectoring.configuration.mail;
import java.time.Duration;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import org.springframework.util.unit.DataSize;
import static org.assertj.core.api.Assertions.*;
@ExtendWith(SpringExtension.class)
@SpringBootTest(properties = {
"myapp.mail.enabled=asd",
"myapp.mail.defaultSubject=hello",
"myapp.mail.pauseBetweenMails=5s",
"myapp.mail.maxAttachmentSize=1MB",
"myapp.mail.smtpServers[0]=server1",
"myapp.mail.smtpServers[1]=server2",
"myapp.mail.maxAttachmentWeight=5kg"
})
class MailModuleTestWithAllProperties {
@Autowired(required = false)
private MailModuleProperties mailModuleProperties;
@Test
void propertiesAreLoaded() {
assertThat(mailModuleProperties).isNotNull();
assertThat(mailModuleProperties.getDefaultSubject()).isEqualTo("hello");
assertThat(mailModuleProperties.getEnabled()).isTrue();
assertThat(mailModuleProperties.getPauseBetweenMails()).isEqualByComparingTo(Duration.ofSeconds(5));
assertThat(mailModuleProperties.getMaxAttachmentSize()).isEqualByComparingTo(DataSize.ofMegabytes(1));
assertThat(mailModuleProperties.getSmtpServers()).hasSize(2);
assertThat(mailModuleProperties.getMaxAttachmentWeight().getGrams()).isEqualTo(5000L);
}
}

25
spring-boot/configuration/src/test/java/io/reflectoring/configuration/mail/MailModuleTestWithInvalidProperties.java Normal file
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package io.reflectoring.configuration.mail;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import static org.assertj.core.api.Assertions.*;
@ExtendWith(SpringExtension.class)
@SpringBootTest(properties = {
"myapp.mail.defaultSubject="
})
@Disabled("this test will fail due to invalid properties")
class MailModuleTestWithInvalidProperties {
@Autowired(required = false)
private MailModuleProperties mailModuleProperties;
@Test
void propertiesAreLoaded() {
assertThat(mailModuleProperties).isNotNull();
}
}

22
spring-boot/configuration/src/test/java/io/reflectoring/configuration/mail/MailModuleTestWithUnknownField.java Normal file
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package io.reflectoring.configuration.mail;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import static org.assertj.core.api.Assertions.*;
@ExtendWith(SpringExtension.class)
@SpringBootTest
class MailModuleTestWithUnknownField {
@Autowired(required = false)
private MailModuleProperties mailModuleProperties;
@Test
void propertiesAreLoaded() {
assertThat(mailModuleProperties).isNotNull();
}
}

9
spring-boot/configuration/src/test/java/io/reflectoring/configuration/unknownandinvalidfield/UnknownAndInvalidFieldModule.java Normal file
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package io.reflectoring.configuration.unknownandinvalidfield;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
@SpringBootConfiguration
@EnableConfigurationProperties(UnkownAndInvalidFieldProperties.class)
class UnknownAndInvalidFieldModule {
}

28
spring-boot/configuration/src/test/java/io/reflectoring/configuration/unknownandinvalidfield/UnkownFieldPropertiesTest.java Normal file
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package io.reflectoring.configuration.unknownandinvalidfield;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import static org.assertj.core.api.Assertions.*;
@ExtendWith(SpringExtension.class)
@SpringBootTest(properties = {
"myapp.unknown-and-invalid-field-module.unknown-property=foo"
})
class UnkownFieldPropertiesTest {
@Autowired(required = false)
private UnkownAndInvalidFieldProperties properties;
@Test
@Disabled("disabled due to unexpected behavior")
void loadsApplicationContext() {
// This test passes.
// However, I would expect this test to fail application context startup due to the unknown property.
// If we set ignoreInvalidFields to true, it works as expected.
assertThat(properties).isNotNull();
}
}

10
spring-boot/configuration/src/test/java/io/reflectoring/configuration/unknownfield/UnknownFieldModule.java Normal file
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package io.reflectoring.configuration.unknownfield;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Configuration;
@SpringBootConfiguration
@EnableConfigurationProperties(UnkownFieldProperties.class)
class UnknownFieldModule {
}

25
spring-boot/configuration/src/test/java/io/reflectoring/configuration/unknownfield/UnkownFieldPropertiesTest.java Normal file
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package io.reflectoring.configuration.unknownfield;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import static org.assertj.core.api.Assertions.*;
@ExtendWith(SpringExtension.class)
@SpringBootTest(properties = {
"myapp.unknownfield.unknown-property=foo"
})
@Disabled("this test is expected to fail due an unknown property")
class UnkownFieldPropertiesTest {
@Autowired(required = false)
private UnkownFieldProperties properties;
@Test
void propertiesAreLoaded() {
assertThat(properties).isNotNull();
}
}