FINERACT-1724

Added batch support for the Get Charge by Id call.
Added externalId field to PostLoansLoanIdChargesRequest.
Added submittedOnDate column to m_loan_charge table.
Updated logic to return new submittedOnDate field in GetLoansLoanIdChargesChargeIdResponse.

fineract-provider/src/main/java/org/apache/fineract/batch/command/CommandStrategyProvider.java

@@ -91,6 +91,8 @@ public class CommandStrategyProvider {
         this.commandStrategies.put(CommandContext.resource("loans\\/\\d+\\/charges").method("POST").build(), "createChargeCommandStrategy");
         this.commandStrategies.put(CommandContext.resource("loans\\/\\d+\\/charges").method("GET").build(),
                 "collectChargesCommandStrategy");
+        this.commandStrategies.put(CommandContext.resource("loans\\/\\d+\\/charges\\/\\d+").method("GET").build(),
+                "getChargeByIdCommandStrategy");
         this.commandStrategies.put(CommandContext.resource("loans\\/\\d+\\/transactions\\?command=repayment").method("POST").build(),
                 "createTransactionLoanCommandStrategy");
         this.commandStrategies.put(

fineract-provider/src/main/java/org/apache/fineract/batch/command/internal/GetChargeByIdCommandStrategy.java

@@ -0,0 +1,87 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.fineract.batch.command.internal;
+
+import com.google.common.base.Splitter;
+import java.util.List;
+import java.util.Map;
+import javax.ws.rs.core.UriInfo;
+import lombok.RequiredArgsConstructor;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.fineract.batch.command.CommandStrategy;
+import org.apache.fineract.batch.command.CommandStrategyUtils;
+import org.apache.fineract.batch.domain.BatchRequest;
+import org.apache.fineract.batch.domain.BatchResponse;
+import org.apache.fineract.infrastructure.core.api.MutableUriInfo;
+import org.apache.fineract.portfolio.loanaccount.api.LoanChargesApiResource;
+import org.apache.http.HttpStatus;
+import org.springframework.stereotype.Component;
+
+/**
+ * Implements {@link CommandStrategy} to retrieve a charge by id. It passes the contents of the body from the
+ * BatchRequest to {@link LoanChargesApiResource} and gets back the response. This class will also catch any errors
+ * raised by {@link LoanChargesApiResource} and map those errors to appropriate status codes in BatchResponse.
+ *
+ * @see CommandStrategy
+ * @see BatchRequest
+ * @see BatchResponse
+ */
+@Component
+@RequiredArgsConstructor
+public class GetChargeByIdCommandStrategy implements CommandStrategy {
+
+    private final LoanChargesApiResource loanChargesApiResource;
+
+    @Override
+    public BatchResponse execute(final BatchRequest request, UriInfo uriInfo) {
+        final MutableUriInfo parameterizedUriInfo = new MutableUriInfo(uriInfo);
+
+        final BatchResponse response = new BatchResponse();
+        final String responseBody;
+
+        response.setRequestId(request.getRequestId());
+        response.setHeaders(request.getHeaders());
+
+        final String relativeUrl = request.getRelativeUrl();
+
+        // Get the loan and charge ids for use in loanChargesApiResource
+        final List<String> pathParameters = Splitter.on('/').splitToList(relativeUrl);
+        final Long loanId = Long.parseLong(pathParameters.get(1));
+        Long chargeId;
+        if (relativeUrl.indexOf('?') > 0) {
+            chargeId = Long.parseLong(StringUtils.substringBeforeLast(pathParameters.get(3), "?"));
+        } else {
+            chargeId = Long.parseLong(pathParameters.get(3));
+        }
+
+        Map<String, String> queryParameters;
+        if (relativeUrl.indexOf('?') > 0) {
+            queryParameters = CommandStrategyUtils.getQueryParameters(relativeUrl);
+
+            // Add the query parameters sent in the relative URL to UriInfo
+            CommandStrategyUtils.addQueryParametersToUriInfo(parameterizedUriInfo, queryParameters);
+        }
+
+        responseBody = loanChargesApiResource.retrieveLoanCharge(loanId, chargeId, parameterizedUriInfo);
+        response.setStatusCode(HttpStatus.SC_OK);
+        response.setBody(responseBody);
+
+        return response;
+    }
+}

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/api/LoanChargesApiResourceSwagger.java

@@ -19,6 +19,7 @@
 package org.apache.fineract.portfolio.loanaccount.api;
 
 import io.swagger.v3.oas.annotations.media.Schema;
+import java.time.LocalDate;
 import java.util.Set;
 
 /**
@@ -102,6 +103,8 @@ final class LoanChargesApiResourceSwagger {
         public Double amountOrPercentage;
         @Schema(example = "false")
         public Boolean penalty;
+        @Schema(example = "27 March 2013")
+        public LocalDate submittedOnDate;
     }
 
     @Schema(description = "GetLoansLoanIdChargesTemplateResponse")
@@ -179,6 +182,8 @@ final class LoanChargesApiResourceSwagger {
         public String dateFormat;
         @Schema(example = "29 April 2013")
         public String dueDate;
+        @Schema(example = "786444UUUYYH7")
+        public String externalId;
     }
 
     @Schema(description = " PostLoansLoanIdChargesResponse")

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/data/LoanChargeData.java

@@ -39,6 +39,8 @@ public class LoanChargeData {
     private final String name;
     private final EnumOptionData chargeTimeType;
 
+    private final LocalDate submittedOnDate;
+
     private final LocalDate dueDate;
 
     private final EnumOptionData chargeCalculationType;
@@ -103,10 +105,10 @@ public class LoanChargeData {
 
     public LoanChargeData(final Long id, final Long chargeId, final String name, final CurrencyData currency, final BigDecimal amount,
             final BigDecimal amountPaid, final BigDecimal amountWaived, final BigDecimal amountWrittenOff,
-            final BigDecimal amountOutstanding, final EnumOptionData chargeTimeType, final LocalDate dueDate,
-            final EnumOptionData chargeCalculationType, final BigDecimal percentage, final BigDecimal amountPercentageAppliedTo,
-            final boolean penalty, final EnumOptionData chargePaymentMode, final boolean paid, final boolean waived, final Long loanId,
-            final BigDecimal minCap, final BigDecimal maxCap, final BigDecimal amountOrPercentage,
+            final BigDecimal amountOutstanding, final EnumOptionData chargeTimeType, final LocalDate submittedOnDate,
+            final LocalDate dueDate, final EnumOptionData chargeCalculationType, final BigDecimal percentage,
+            final BigDecimal amountPercentageAppliedTo, final boolean penalty, final EnumOptionData chargePaymentMode, final boolean paid,
+            final boolean waived, final Long loanId, final BigDecimal minCap, final BigDecimal maxCap, final BigDecimal amountOrPercentage,
             Collection<LoanInstallmentChargeData> installmentChargeData, final String externalId) {
         this.id = id;
         this.chargeId = chargeId;
@@ -118,6 +120,7 @@ public class LoanChargeData {
         this.amountWrittenOff = amountWrittenOff;
         this.amountOutstanding = amountOutstanding;
         this.chargeTimeType = chargeTimeType;
+        this.submittedOnDate = submittedOnDate;
         this.dueDate = dueDate;
         this.chargeCalculationType = chargeCalculationType;
         this.percentage = percentage;
@@ -162,6 +165,7 @@ public class LoanChargeData {
         this.amountWrittenOff = BigDecimal.ZERO;
         this.amountOutstanding = amount;
         this.chargeTimeType = chargeTimeType;
+        this.submittedOnDate = null;
         this.dueDate = null;
         this.chargeCalculationType = chargeCalculationType;
         this.percentage = percentage;
@@ -203,6 +207,7 @@ public class LoanChargeData {
         this.amountWrittenOff = null;
         this.amountOutstanding = amountOutstanding;
         this.chargeTimeType = chargeTimeType;
+        this.submittedOnDate = null;
         this.dueDate = dueAsOfDate;
         this.chargeCalculationType = null;
         this.percentage = null;
@@ -234,6 +239,7 @@ public class LoanChargeData {
         this.amountWrittenOff = null;
         this.amountOutstanding = null;
         this.chargeTimeType = chargeTimeType;
+        this.submittedOnDate = null;
         this.dueDate = dueAsOfDate;
         this.chargeCalculationType = null;
         this.percentage = null;
@@ -264,6 +270,7 @@ public class LoanChargeData {
         this.amountWrittenOff = null;
         this.amountOutstanding = null;
         this.chargeTimeType = chargeData.chargeTimeType;
+        this.submittedOnDate = chargeData.submittedOnDate;
         this.dueDate = chargeData.dueDate;
         this.chargeCalculationType = null;
         this.percentage = null;
@@ -294,6 +301,7 @@ public class LoanChargeData {
         this.amountWrittenOff = chargeData.amountWrittenOff;
         this.amountOutstanding = chargeData.amountOutstanding;
         this.chargeTimeType = chargeData.chargeTimeType;
+        this.submittedOnDate = chargeData.submittedOnDate;
         this.dueDate = chargeData.dueDate;
         this.chargeCalculationType = chargeData.chargeCalculationType;
         this.percentage = chargeData.percentage;
@@ -326,6 +334,7 @@ public class LoanChargeData {
         this.amountWrittenOff = null;
         this.amountOutstanding = null;
         this.chargeTimeType = chargeTimeType;
+        this.submittedOnDate = null;
         this.dueDate = dueAsOfDate;
         this.chargeCalculationType = chargeCalculationType;
         this.percentage = null;
@@ -356,6 +365,7 @@ public class LoanChargeData {
         this.amountWrittenOff = null;
         this.amountOutstanding = null;
         this.chargeTimeType = null;
+        this.submittedOnDate = null;
         this.dueDate = dueAsOfDate;
         this.chargeCalculationType = null;
         this.percentage = null;

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/domain/LoanCharge.java

@@ -42,6 +42,7 @@ import javax.persistence.Table;
 import javax.persistence.UniqueConstraint;
 import org.apache.fineract.infrastructure.core.api.JsonCommand;
 import org.apache.fineract.infrastructure.core.domain.AbstractPersistableCustom;
+import org.apache.fineract.infrastructure.core.service.DateUtils;
 import org.apache.fineract.organisation.monetary.domain.MonetaryCurrency;
 import org.apache.fineract.organisation.monetary.domain.Money;
 import org.apache.fineract.organisation.monetary.domain.MoneyHelper;
@@ -68,6 +69,9 @@ public class LoanCharge extends AbstractPersistableCustom {
     @Column(name = "charge_time_enum", nullable = false)
     private Integer chargeTime;
 
+    @Column(name = "submitted_on_date", nullable = true)
+    private LocalDate submittedOnDate;
+
     @Column(name = "due_for_collection_as_of_date")
     private LocalDate dueDate;
 
@@ -229,6 +233,7 @@ public class LoanCharge extends AbstractPersistableCustom {
             final ChargePaymentMode chargePaymentMode, final Integer numberOfRepayments, final BigDecimal loanCharge) {
         this.loan = loan;
         this.charge = chargeDefinition;
+        this.submittedOnDate = DateUtils.getBusinessLocalDate();
         this.penaltyCharge = chargeDefinition.isPenalty();
         this.minCap = chargeDefinition.getMinCap();
         this.maxCap = chargeDefinition.getMaxCap();
@@ -597,6 +602,10 @@ public class LoanCharge extends AbstractPersistableCustom {
         return this.dueDate;
     }
 
+    public LocalDate getSubmittedOnDate() {
+        return submittedOnDate;
+    }
+
     private boolean determineIfFullyPaid() {
         if (this.amount == null) {
             return true;

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/service/LoanChargeReadPlatformServiceImpl.java

@@ -59,8 +59,8 @@ public class LoanChargeReadPlatformServiceImpl implements LoanChargeReadPlatform
     private static final class LoanChargeMapper implements RowMapper<LoanChargeData> {
 
         public String schema() {
-            return "lc.id as id, lc.external_id as externalId, c.id as chargeId, c.name as name, " + "lc.amount as amountDue, "
-                    + "lc.amount_paid_derived as amountPaid, " + "lc.amount_waived_derived as amountWaived, "
+            return "lc.id as id, lc.external_id as externalId, c.id as chargeId, c.name as name, lc.submitted_on_date as submittedOnDate, "
+                    + "lc.amount as amountDue, " + "lc.amount_paid_derived as amountPaid, " + "lc.amount_waived_derived as amountWaived, "
                     + "lc.amount_writtenoff_derived as amountWrittenOff, " + "lc.amount_outstanding_derived as amountOutstanding, "
                     + "lc.calculation_percentage as percentageOf, lc.calculation_on_amount as amountPercentageAppliedTo, "
                     + "lc.charge_time_enum as chargeTime, " + "lc.is_penalty as penalty, "
@@ -116,6 +116,7 @@ public class LoanChargeReadPlatformServiceImpl implements LoanChargeReadPlatform
             final BigDecimal maxCap = rs.getBigDecimal("maxCap");
             final BigDecimal amountOrPercentage = rs.getBigDecimal("amountOrPercentage");
             final LocalDate disbursementDate = JdbcSupport.getLocalDate(rs, "disbursementDate");
+            final LocalDate submittedOnDate = JdbcSupport.getLocalDate(rs, "submittedOnDate");
 
             if (disbursementDate != null) {
                 dueAsOfDate = disbursementDate;
@@ -123,8 +124,8 @@ public class LoanChargeReadPlatformServiceImpl implements LoanChargeReadPlatform
             final String externalId = rs.getString("externalId");
 
             return new LoanChargeData(id, chargeId, name, currency, amount, amountPaid, amountWaived, amountWrittenOff, amountOutstanding,
-                    chargeTimeType, dueAsOfDate, chargeCalculationType, percentageOf, amountPercentageAppliedTo, penalty, paymentMode, paid,
-                    waived, null, minCap, maxCap, amountOrPercentage, null, externalId);
+                    chargeTimeType, submittedOnDate, dueAsOfDate, chargeCalculationType, percentageOf, amountPercentageAppliedTo, penalty,
+                    paymentMode, paid, waived, null, minCap, maxCap, amountOrPercentage, null, externalId);
         }
     }
 

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanproduct/serialization/LoanProductDataValidator.java

@@ -526,7 +526,8 @@ public final class LoanProductDataValidator {
         baseDataValidator.reset().parameter(LoanProductConstants.fixedPrincipalPercentagePerInstallmentParamName)
                 .value(fixedPrincipalPercentagePerInstallment).notLessThanMin(BigDecimal.ONE).notGreaterThanMax(BigDecimal.valueOf(100));
 
-        if (!amortizationType.equals(AmortizationMethod.EQUAL_PRINCIPAL.getValue()) && fixedPrincipalPercentagePerInstallment != null) {
+        if (amortizationType != null && !amortizationType.equals(AmortizationMethod.EQUAL_PRINCIPAL.getValue())
+                && fixedPrincipalPercentagePerInstallment != null) {
             baseDataValidator.reset().parameter(LoanApiConstants.fixedPrincipalPercentagePerInstallmentParamName).failWithCode(
                     "not.supported.principal.fixing.not.allowed.with.equal.installments",
                     "Principal fixing cannot be done with equal installment amortization");

fineract-provider/src/main/resources/db/changelog/tenant/changelog-tenant.xml

@@ -74,4 +74,5 @@
     <include file="parts/0052_loan_transaction_chargeback.xml" relativeToChangelogFile="true"/>
     <include file="parts/0053_add_external_events_purge_job.xml" relativeToChangelogFile="true"/>
     <include file="parts/0054_additional_fields_loan_repayment_schedule.xml" relativeToChangelogFile="true"/>
+    <include file="parts/0055_add_submitted_on_date_to_loan_charge.xml" relativeToChangelogFile="true"/>
 </databaseChangeLog>

fineract-provider/src/main/resources/db/changelog/tenant/parts/0055_add_submitted_on_date_to_loan_charge.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements. See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership. The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License. You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied. See the License for the
+    specific language governing permissions and limitations
+    under the License.
+
+-->
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-4.1.xsd">
+    <changeSet author="fineract" id="1">
+        <addColumn tableName="m_loan_charge">
+            <column name="submitted_on_date" type="date">
+                <constraints nullable="true"/>
+            </column>
+        </addColumn>
+    </changeSet>
+</databaseChangeLog>

fineract-provider/src/test/java/org/apache/fineract/batch/command/CommandStrategyProviderTest.java

@@ -36,6 +36,7 @@ import org.apache.fineract.batch.command.internal.CreateClientCommandStrategy;
 import org.apache.fineract.batch.command.internal.CreateLoanRescheduleRequestCommandStrategy;
 import org.apache.fineract.batch.command.internal.CreateTransactionLoanCommandStrategy;
 import org.apache.fineract.batch.command.internal.DisburseLoanCommandStrategy;
+import org.apache.fineract.batch.command.internal.GetChargeByIdCommandStrategy;
 import org.apache.fineract.batch.command.internal.GetDatatableEntryByAppTableIdCommandStrategy;
 import org.apache.fineract.batch.command.internal.GetLoanByIdCommandStrategy;
 import org.apache.fineract.batch.command.internal.GetTransactionByIdCommandStrategy;
@@ -69,6 +70,8 @@ public class CommandStrategyProviderTest {
                 Arguments.of("loans/123/charges", HttpMethod.POST, "createChargeCommandStrategy", mock(CreateChargeCommandStrategy.class)),
                 Arguments.of("loans/123/charges", HttpMethod.GET, "collectChargesCommandStrategy",
                         mock(CollectChargesCommandStrategy.class)),
+                Arguments.of("loans/123/charges/123", HttpMethod.GET, "getChargeByIdCommandStrategy",
+                        mock(GetChargeByIdCommandStrategy.class)),
                 Arguments.of("loans/123/transactions?command=repayment", HttpMethod.POST, "createTransactionLoanCommandStrategy",
                         mock(CreateTransactionLoanCommandStrategy.class)),
                 Arguments.of("loans/123/transactions?command=creditBalanceRefund", HttpMethod.POST, "createTransactionLoanCommandStrategy",
@@ -130,7 +133,8 @@ public class CommandStrategyProviderTest {
     private static Stream<Arguments> provideCommandStrategyResourceDetailsForErrors() {
         return Stream.of(Arguments.of("loans/123?command=reject", HttpMethod.POST),
                 Arguments.of("loans/glimAccount/746?command=approve", HttpMethod.POST), Arguments.of("loans/123", HttpMethod.PUT),
-                Arguments.of("datatables/test_dt_table", HttpMethod.GET), Arguments.of("datatables", HttpMethod.GET));
+                Arguments.of("datatables/test_dt_table", HttpMethod.GET), Arguments.of("datatables", HttpMethod.GET),
+                Arguments.of("loans//charges/123", HttpMethod.GET), Arguments.of("loans/123/charges/", HttpMethod.GET));
 
     }
 

fineract-provider/src/test/java/org/apache/fineract/batch/command/internal/GetChargeByIdCommandStrategyTest.java

@@ -0,0 +1,149 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.fineract.batch.command.internal;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.verify;
+
+import java.util.stream.Stream;
+import javax.ws.rs.HttpMethod;
+import javax.ws.rs.core.UriInfo;
+import org.apache.commons.lang3.RandomStringUtils;
+import org.apache.fineract.batch.domain.BatchRequest;
+import org.apache.fineract.batch.domain.BatchResponse;
+import org.apache.fineract.infrastructure.core.api.MutableUriInfo;
+import org.apache.fineract.portfolio.loanaccount.api.LoanChargesApiResource;
+import org.apache.http.HttpStatus;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Captor;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+/**
+ * The {@link GetChargeByIdCommandStrategy} test class.
+ */
+public class GetChargeByIdCommandStrategyTest {
+
+    /**
+     * Query parameter provider.
+     *
+     * @return the test data stream
+     */
+    private static Stream<Arguments> provideQueryParameters() {
+        return Stream.of(Arguments.of(null, 0), Arguments.of("fields=name,amountOrPercentage", 1));
+    }
+
+    /**
+     * Test {@link GetChargeByIdCommandStrategy#execute} happy path scenario.
+     */
+    @ParameterizedTest
+    @MethodSource("provideQueryParameters")
+    public void testExecuteSuccessScenario(final String queryParameter, final int numberOfQueryParams) {
+        final TestContext testContext = new TestContext();
+
+        final Long loanId = Long.valueOf(RandomStringUtils.randomNumeric(4));
+        final Long chargeId = Long.valueOf(RandomStringUtils.randomNumeric(4));
+        final BatchRequest request = getBatchRequest(loanId, chargeId, queryParameter);
+        final String responseBody = "someResponseBody";
+
+        given(testContext.loanChargesApiResource.retrieveLoanCharge(eq(loanId), eq(chargeId), any(UriInfo.class))).willReturn(responseBody);
+
+        final BatchResponse response = testContext.subjectToTest.execute(request, testContext.uriInfo);
+
+        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.SC_OK);
+        assertThat(response.getRequestId()).isEqualTo(request.getRequestId());
+        assertThat(response.getHeaders()).isEqualTo(request.getHeaders());
+        assertThat(response.getBody()).isEqualTo(responseBody);
+
+        verify(testContext.loanChargesApiResource).retrieveLoanCharge(eq(loanId), eq(chargeId), testContext.uriInfoCaptor.capture());
+        MutableUriInfo mutableUriInfo = testContext.uriInfoCaptor.getValue();
+        assertThat(mutableUriInfo.getAdditionalQueryParameters()).hasSize(numberOfQueryParams);
+    }
+
+    /**
+     * Creates and returns a request with the given loan id and charge id.
+     *
+     * @param loanId
+     *            the loan id
+     * @param chargeId
+     *            the charge id
+     * @param queryParameter
+     *            the query parameter
+     * @return BatchRequest
+     */
+    private BatchRequest getBatchRequest(final Long loanId, final Long chargeId, final String queryParameter) {
+        final BatchRequest br = new BatchRequest();
+        String relativeUrl = "loans/" + loanId + "/charges/" + chargeId;
+
+        if (queryParameter != null) {
+            relativeUrl = relativeUrl + "?" + queryParameter;
+        }
+
+        br.setRequestId(Long.valueOf(RandomStringUtils.randomNumeric(5)));
+        br.setRelativeUrl(relativeUrl);
+        br.setMethod(HttpMethod.GET);
+        br.setReference(Long.valueOf(RandomStringUtils.randomNumeric(5)));
+        br.setBody("{}");
+
+        return br;
+    }
+
+    /**
+     * Private test context class used since testng runs in parallel to avoid state between tests
+     */
+    private static class TestContext {
+
+        /**
+         * The subject to test
+         */
+        private final GetChargeByIdCommandStrategy subjectToTest;
+
+        /**
+         * The mock uri info
+         */
+        @Mock
+        private UriInfo uriInfo;
+
+        /**
+         * The mock {@link LoanChargesApiResource} object.
+         */
+        @Mock
+        private LoanChargesApiResource loanChargesApiResource;
+
+        /**
+         * The uri info captor
+         */
+        @Captor
+        private ArgumentCaptor<MutableUriInfo> uriInfoCaptor;
+
+        /**
+         * Test Context constructor
+         */
+        TestContext() {
+            MockitoAnnotations.openMocks(this);
+            subjectToTest = new GetChargeByIdCommandStrategy(loanChargesApiResource);
+        }
+    }
+}