diff --git a/fullstack-helm-client/src/test/java/com/hedera/fullstack/helm/client/test/proxy/request/chart/ChartInstallRequestTest.java b/fullstack-helm-client/src/test/java/com/hedera/fullstack/helm/client/test/proxy/request/chart/ChartInstallRequestTest.java
index 9b4338d6a..2b176a5f8 100644
--- a/fullstack-helm-client/src/test/java/com/hedera/fullstack/helm/client/test/proxy/request/chart/ChartInstallRequestTest.java
+++ b/fullstack-helm-client/src/test/java/com/hedera/fullstack/helm/client/test/proxy/request/chart/ChartInstallRequestTest.java
@@ -17,15 +17,32 @@
 package com.hedera.fullstack.helm.client.test.proxy.request.chart;
 
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
 
+import com.hedera.fullstack.helm.client.execution.HelmExecutionBuilder;
 import com.hedera.fullstack.helm.client.model.Chart;
 import com.hedera.fullstack.helm.client.model.install.InstallChartOptions;
 import com.hedera.fullstack.helm.client.proxy.request.chart.ChartInstallRequest;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
 
+@ExtendWith(MockitoExtension.class)
 class ChartInstallRequestTest {
+    @Mock
+    InstallChartOptions installChartOptionsMock;
+
+    @Mock
+    Chart chartMock;
+
+    @Mock
+    HelmExecutionBuilder helmExecutionBuilderMock;
+
     @Test
     @DisplayName("Test ChartInstallRequest Chart constructor")
     void testChartInstallRequestChartConstructor() {
@@ -45,5 +62,47 @@ void testChartInstallRequestChartConstructor() {
                 .isNotEqualTo(InstallChartOptions.defaults());
     }
 
-    // TODO: test ChartInstallRequest apply method using mock of builder to verify calls
+    @Test
+    @DisplayName("Test ChartInstallRequest apply with unqualified chart")
+    void testChartInstallRequestApplyUnqualifiedChart() {
+        final ChartInstallRequest chartInstallRequest =
+                new ChartInstallRequest("mocked", chartMock, installChartOptionsMock);
+        assertThat(chartInstallRequest).isNotNull();
+        assertThat(chartInstallRequest.chart()).isNotNull().isEqualTo(chartMock);
+        assertThat(chartInstallRequest.releaseName()).isEqualTo("mocked");
+        assertThat(chartInstallRequest.options()).isNotNull().isEqualTo(installChartOptionsMock);
+
+        when(installChartOptionsMock.repo()).thenReturn("mockedRepo");
+        when(chartMock.unqualified()).thenReturn("mockedUnqualified");
+        when(helmExecutionBuilderMock.positional("mocked")).thenReturn(helmExecutionBuilderMock);
+        when(helmExecutionBuilderMock.positional("mockedUnqualified")).thenReturn(helmExecutionBuilderMock);
+        chartInstallRequest.apply(helmExecutionBuilderMock);
+        verify(helmExecutionBuilderMock, times(1)).subcommands("install");
+        verify(installChartOptionsMock, times(1)).apply(helmExecutionBuilderMock);
+        verify(installChartOptionsMock, times(2)).repo();
+        verify(chartMock, times(1)).unqualified();
+        verify(helmExecutionBuilderMock, times(2)).positional(anyString());
+    }
+
+    @Test
+    @DisplayName("Test ChartInstallRequest apply with qualified chart")
+    void testChartInstallRequestApplyQualifiedChart() {
+        final ChartInstallRequest chartInstallRequest =
+                new ChartInstallRequest("mocked", chartMock, installChartOptionsMock);
+        assertThat(chartInstallRequest).isNotNull();
+        assertThat(chartInstallRequest.chart()).isNotNull().isEqualTo(chartMock);
+        assertThat(chartInstallRequest.releaseName()).isEqualTo("mocked");
+        assertThat(chartInstallRequest.options()).isNotNull().isEqualTo(installChartOptionsMock);
+
+        when(installChartOptionsMock.repo()).thenReturn(null);
+        when(chartMock.qualified()).thenReturn("mockedQualified");
+        when(helmExecutionBuilderMock.positional("mocked")).thenReturn(helmExecutionBuilderMock);
+        when(helmExecutionBuilderMock.positional("mockedQualified")).thenReturn(helmExecutionBuilderMock);
+        chartInstallRequest.apply(helmExecutionBuilderMock);
+        verify(helmExecutionBuilderMock, times(1)).subcommands("install");
+        verify(installChartOptionsMock, times(1)).apply(helmExecutionBuilderMock);
+        verify(installChartOptionsMock, times(1)).repo();
+        verify(chartMock, times(1)).qualified();
+        verify(helmExecutionBuilderMock, times(2)).positional(anyString());
+    }
 }