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BAEL-3769 | Writing templates for test cases using JUnit 5

This commit is contained in:
ramprasad.devarakonda@gmail.com 2020-03-24 00:55:23 +00:00
parent 8be4255cbb
commit f154a17239
9 changed files with 224 additions and 1 deletions
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9
testing-modules/junit5-annotations/pom.xml
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@ -46,12 +46,19 @@
<version>${junit.platform.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj-core.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<junit.jupiter.version>5.6.0</junit.jupiter.version>
<junit.jupiter.version>5.6.2</junit.jupiter.version>
<junit.platform.version>1.6.0</junit.platform.version>
<log4j2.version>2.8.2</log4j2.version>
<assertj-core.version>3.11.1</assertj-core.version>
</properties>
</project>

5
testing-modules/junit5-annotations/src/main/java/com/baeldung/junit5/templates/UserIdGenerator.java Normal file
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@ -0,0 +1,5 @@
package com.baeldung.junit5.templates;
public interface UserIdGenerator {
String generate(String firstName, String lastName);
}

15
testing-modules/junit5-annotations/src/main/java/com/baeldung/junit5/templates/UserIdGeneratorImpl.java Normal file
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@ -0,0 +1,15 @@
package com.baeldung.junit5.templates;
public class UserIdGeneratorImpl implements UserIdGenerator {
private boolean isFeatureEnabled;
public UserIdGeneratorImpl(boolean isFeatureEnabled) {
this.isFeatureEnabled = isFeatureEnabled;
}
public String generate(String firstName, String lastName) {
String initialAndLastName = firstName.substring(0, 1)
.concat(lastName);
return isFeatureEnabled ? "bael".concat(initialAndLastName) : initialAndLastName;
}
}

27
testing-modules/junit5-annotations/src/test/java/com/baeldung/junit5/templates/DisabledOnQAEnvironmentExtension.java Normal file
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@ -0,0 +1,27 @@
package com.baeldung.junit5.templates;
import org.junit.jupiter.api.extension.ConditionEvaluationResult;
import org.junit.jupiter.api.extension.ExecutionCondition;
import org.junit.jupiter.api.extension.ExtensionContext;
import java.io.IOException;
import java.util.Properties;
public class DisabledOnQAEnvironmentExtension implements ExecutionCondition {
@Override
public ConditionEvaluationResult evaluateExecutionCondition(ExtensionContext context) {
Properties properties = new Properties();
try {
properties.load(DisabledOnQAEnvironmentExtension.class.getClassLoader()
.getResourceAsStream("application.properties"));
if ("qa".equalsIgnoreCase(properties.getProperty("env"))) {
String reason = String.format("The test '%s' is disabled on QA environment", context.getDisplayName());
System.out.println(reason);
return ConditionEvaluationResult.disabled(reason);
}
} catch (IOException e) {
throw new RuntimeException(e);
}
return ConditionEvaluationResult.enabled("Test enabled");
}
}

26
testing-modules/junit5-annotations/src/test/java/com/baeldung/junit5/templates/GenericTypedParameterResolver.java Normal file
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@ -0,0 +1,26 @@
package com.baeldung.junit5.templates;
import org.junit.jupiter.api.extension.ExtensionContext;
import org.junit.jupiter.api.extension.ParameterContext;
import org.junit.jupiter.api.extension.ParameterResolutionException;
import org.junit.jupiter.api.extension.ParameterResolver;
public class GenericTypedParameterResolver<T> implements ParameterResolver {
T data;
public GenericTypedParameterResolver(T data) {
this.data = data;
}
@Override
public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext) throws ParameterResolutionException {
return parameterContext.getParameter()
.getType()
.isInstance(data);
}
@Override
public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext) throws ParameterResolutionException {
return data;
}
}

18
testing-modules/junit5-annotations/src/test/java/com/baeldung/junit5/templates/UserIdGeneratorImplUnitTest.java Normal file
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@ -0,0 +1,18 @@
package com.baeldung.junit5.templates;
import org.junit.jupiter.api.TestTemplate;
import org.junit.jupiter.api.extension.ExtendWith;
import static org.assertj.core.api.Assertions.assertThat;
public class UserIdGeneratorImplUnitTest {
@TestTemplate
@ExtendWith(UserIdGeneratorTestInvocationContextProvider.class)
public void whenUserIdRequested_thenUserIdIsReturnedInCorrectFormat(UserIdGeneratorTestCase testCase) {
UserIdGenerator userIdGenerator = new UserIdGeneratorImpl(testCase.isFeatureEnabled());
String actualUserId = userIdGenerator.generate(testCase.getFirstName(), testCase.getLastName());
assertThat(actualUserId).isEqualTo(testCase.getExpectedUserId());
}
}

37
testing-modules/junit5-annotations/src/test/java/com/baeldung/junit5/templates/UserIdGeneratorTestCase.java Normal file
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@ -0,0 +1,37 @@
package com.baeldung.junit5.templates;
public class UserIdGeneratorTestCase {
private String displayName;
private boolean isFeatureEnabled;
private String firstName;
private String lastName;
private String expectedUserId;
public UserIdGeneratorTestCase(String displayName, boolean isFeatureEnabled, String firstName, String lastName, String expectedUserId) {
this.displayName = displayName;
this.isFeatureEnabled = isFeatureEnabled;
this.firstName = firstName;
this.lastName = lastName;
this.expectedUserId = expectedUserId;
}
public String getDisplayName() {
return displayName;
}
public boolean isFeatureEnabled() {
return isFeatureEnabled;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public String getExpectedUserId() {
return expectedUserId;
}
}

87
testing-modules/junit5-annotations/src/test/java/com/baeldung/junit5/templates/UserIdGeneratorTestInvocationContextProvider.java Normal file
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@ -0,0 +1,87 @@
package com.baeldung.junit5.templates;
import org.junit.jupiter.api.extension.*;
import java.util.List;
import java.util.stream.Stream;
import static java.util.Arrays.asList;
public class UserIdGeneratorTestInvocationContextProvider implements TestTemplateInvocationContextProvider {
@Override
public boolean supportsTestTemplate(ExtensionContext extensionContext) {
return true;
}
@Override
public Stream<TestTemplateInvocationContext> provideTestTemplateInvocationContexts(ExtensionContext extensionContext) {
boolean featureDisabled = false;
boolean featureEnabled = true;
return Stream.of(
featureDisabledContext(
new UserIdGeneratorTestCase(
"Given feature switch disabled When user name is John Smith Then generated userid is JSmith",
featureDisabled, "John", "Smith", "JSmith")),
featureEnabledContext(
new UserIdGeneratorTestCase(
"Given feature switch enabled When user name is John Smith Then generated userid is baelJSmith",
featureEnabled, "John", "Smith", "baelJSmith"))
);
}
private TestTemplateInvocationContext featureDisabledContext(UserIdGeneratorTestCase userIdGeneratorTestCase) {
return new TestTemplateInvocationContext() {
@Override
public String getDisplayName(int invocationIndex) {
return userIdGeneratorTestCase.getDisplayName();
}
@Override
public List<Extension> getAdditionalExtensions() {
return asList(
new GenericTypedParameterResolver(userIdGeneratorTestCase),
new BeforeTestExecutionCallback() {
@Override
public void beforeTestExecution(ExtensionContext extensionContext) {
System.out.println("BeforeTestExecutionCallback:Disabled context");
}
},
new AfterTestExecutionCallback() {
@Override
public void afterTestExecution(ExtensionContext extensionContext) {
System.out.println("AfterTestExecutionCallback:Disabled context");
}
});
}
};
}
private TestTemplateInvocationContext featureEnabledContext(UserIdGeneratorTestCase userIdGeneratorTestCase) {
return new TestTemplateInvocationContext() {
@Override
public String getDisplayName(int invocationIndex) {
return userIdGeneratorTestCase.getDisplayName();
}
@Override
public List<Extension> getAdditionalExtensions() {
return asList(
new GenericTypedParameterResolver(userIdGeneratorTestCase),
new DisabledOnQAEnvironmentExtension(),
new BeforeEachCallback() {
@Override
public void beforeEach(ExtensionContext extensionContext) {
System.out.println("BeforeEachCallback:Enabled context");
}
},
new AfterEachCallback() {
@Override
public void afterEach(ExtensionContext extensionContext) {
System.out.println("AfterEachCallback:Enabled context");
}
});
}
};
}
}

1
testing-modules/junit5-annotations/src/test/resources/application.properties Normal file
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@ -0,0 +1 @@
env=qa