diff --git a/src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/DesktopOnlyModule.kt b/src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/DesktopOnlyModule.kt
index 87aced7..69cdbb2 100644
--- a/src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/DesktopOnlyModule.kt
+++ b/src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/DesktopOnlyModule.kt
@@ -2,4 +2,9 @@ package org.domaindrivenarchitecture.provs.desktop.domain
 
 enum class DesktopOnlyModule {
     FIREFOX, VERIFY
+    ;
+
+    fun isIn(list: List<String>): Boolean {
+        return list.any { it.equals(this.name, ignoreCase = true) }
+    }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/DesktopService.kt b/src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/DesktopService.kt
index 0e351bb..7b1787e 100644
--- a/src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/DesktopService.kt
+++ b/src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/DesktopService.kt
@@ -1,5 +1,7 @@
 package org.domaindrivenarchitecture.provs.desktop.domain
 
+import org.domaindrivenarchitecture.provs.desktop.domain.DesktopOnlyModule.FIREFOX
+import org.domaindrivenarchitecture.provs.desktop.domain.DesktopOnlyModule.VERIFY
 import org.domaindrivenarchitecture.provs.desktop.infrastructure.*
 import org.domaindrivenarchitecture.provs.framework.core.Prov
 import org.domaindrivenarchitecture.provs.framework.ubuntu.git.provisionGit
@@ -42,21 +44,29 @@ internal fun Prov.provisionDesktop(
     onlyModules: List<String>?
 ) = task {
     validatePrecondition()
-    provisionBasicDesktop(gpg, ssh, gitUserName, gitEmail, onlyModules)
 
-    if (desktopType == DesktopType.OFFICE) {
-        provisionOfficeDesktop(onlyModules)
-        if (onlyModules == null) {
+    if (onlyModules == null) {
+        provisionBasicDesktop(gpg, ssh, gitUserName, gitEmail)
+
+        if (desktopType == DesktopType.OFFICE) {
+            provisionOfficeDesktop()
             verifyOfficeSetup()
         }
-    }
-    if (desktopType == DesktopType.IDE) {
-        if (onlyModules == null) {
+        if (desktopType == DesktopType.IDE) {
             provisionOfficeDesktop()
             provisionIdeDesktop()
             verifyIdeSetup()
-        } else {
-            provisionIdeDesktop(onlyModules)
+        }
+    } else {
+        if (FIREFOX.isIn(onlyModules)) {
+            installPpaFirefox()
+        }
+        if (VERIFY.isIn(onlyModules)) {
+            if (desktopType == DesktopType.OFFICE) {
+                verifyOfficeSetup()
+            } else if (desktopType == DesktopType.IDE) {
+                verifyIdeSetup()
+            }
         }
     }
 }
@@ -67,93 +77,78 @@ fun Prov.validatePrecondition() {
     }
 }
 
-fun Prov.provisionIdeDesktop(onlyModules: List<String>? = null) {
-    if (onlyModules == null) {
-        aptInstall(OPEN_VPM)
-        aptInstall(OPENCONNECT)
-        aptInstall(VPNC)
-
-        // DevEnvs
-        installDocker()
-        aptInstall(JAVA)
-        aptInstall(CLOJURE_TOOLS)
-        installShadowCljs()
-        installDevOps()
-        provisionPython()
-
-        // IDEs
-        installVSC("python", "clojure")
-        installIntelliJ()
-    } else if (onlyModules.contains(DesktopOnlyModule.VERIFY.name.lowercase())) {
-        verifyIdeSetup()
-    } else if (onlyModules.contains(DesktopOnlyModule.FIREFOX.name.lowercase())) {
-        installPpaFirefox()
-    }
-}
-
-fun Prov.provisionOfficeDesktop(onlyModules: List<String>? = null) {
-    if (onlyModules == null) {
-        aptInstall(ZIP_UTILS)
-        aptInstall(SPELLCHECKING_DE)
-        aptInstall(BROWSER)
-        aptInstall(EMAIL_CLIENT)
-        installDeltaChat()
-        aptInstall(OFFICE_SUITE)
-        installZimWiki()
-        installNextcloudClient()
-        aptInstall(COMPARE_TOOLS)
-
-        // optional as installation of these tools often fail and they are not considered mandatory
-        optional {
-            aptInstall(DRAWING_TOOLS)
-        }
-    } else if (onlyModules.contains(DesktopOnlyModule.VERIFY.name.lowercase())) {
-        verifyOfficeSetup()
-    } else if (onlyModules.contains(DesktopOnlyModule.FIREFOX.name.lowercase())) {
-        installPpaFirefox()
-    }
-}
 
 fun Prov.provisionBasicDesktop(
     gpg: KeyPair?,
     ssh: SshKeyPair?,
     gitUserName: String?,
     gitEmail: String?,
-    onlyModules: List<String>?
 ) {
-    if (onlyModules == null) {
-        aptInstall(KEY_MANAGEMENT)
-        aptInstall(VERSION_MANAGEMENT)
-        aptInstall(NETWORK_TOOLS)
-        aptInstall(SCREEN_TOOLS)
-        aptInstall(KEY_MANAGEMENT_GUI)
-        aptInstall(PASSWORD_TOOLS)
-        aptInstall(OS_ANALYSIS)
-        aptInstall(BASH_UTILS)
-        aptInstall(CLIP_TOOLS)
-        aptPurge(
-            "remove-power-management xfce4-power-manager " +
-                    "xfce4-power-manager-plugins xfce4-power-manager-data"
-        )
-        aptPurge("abiword gnumeric")
-        aptPurge("popularity-contest")
+    aptInstall(KEY_MANAGEMENT)
+    aptInstall(VERSION_MANAGEMENT)
+    aptInstall(NETWORK_TOOLS)
+    aptInstall(SCREEN_TOOLS)
+    aptInstall(KEY_MANAGEMENT_GUI)
+    aptInstall(PASSWORD_TOOLS)
+    aptInstall(OS_ANALYSIS)
+    aptInstall(BASH_UTILS)
+    aptInstall(CLIP_TOOLS)
+    aptPurge(
+        "remove-power-management xfce4-power-manager " +
+                "xfce4-power-manager-plugins xfce4-power-manager-data"
+    )
+    aptPurge("abiword gnumeric")
+    aptPurge("popularity-contest")
 
-        provisionKeys(gpg, ssh)
-        provisionGit(gitUserName ?: whoami(), gitEmail, gpg?.let { gpgFingerprint(it.publicKey.plain()) })
+    provisionKeys(gpg, ssh)
+    provisionGit(gitUserName ?: whoami(), gitEmail, gpg?.let { gpgFingerprint(it.publicKey.plain()) })
 
-        installPpaFirefox()
-        installGopass()
-        configureGopass(publicGpgKey = gpg?.publicKey)
-        installGopassJsonApi()
-        downloadGopassBridge()
+    installPpaFirefox()
+    installGopass()
+    configureGopass(publicGpgKey = gpg?.publicKey)
+    installGopassJsonApi()
+    downloadGopassBridge()
 
-        installRedshift()
-        configureRedshift()
+    installRedshift()
+    configureRedshift()
 
-        configureNoSwappiness()
-        configureBash()
-        installVirtualBoxGuestAdditions()
-    } else if (onlyModules.contains(DesktopOnlyModule.FIREFOX.name.lowercase())) {
-        installPpaFirefox()
+    configureNoSwappiness()
+    configureBash()
+    installVirtualBoxGuestAdditions()
+}
+
+fun Prov.provisionOfficeDesktop() {
+    aptInstall(ZIP_UTILS)
+    aptInstall(SPELLCHECKING_DE)
+    aptInstall(BROWSER)
+    aptInstall(EMAIL_CLIENT)
+    installDeltaChat()
+    aptInstall(OFFICE_SUITE)
+    installZimWiki()
+    installNextcloudClient()
+    aptInstall(COMPARE_TOOLS)
+
+    // optional, as installation of these tools often fail and as they are not considered mandatory
+    optional {
+        aptInstall(DRAWING_TOOLS)
     }
 }
+
+
+fun Prov.provisionIdeDesktop() {
+    aptInstall(OPEN_VPM)
+    aptInstall(OPENCONNECT)
+    aptInstall(VPNC)
+
+    // DevEnvs
+    installDocker()
+    aptInstall(JAVA)
+    aptInstall(CLOJURE_TOOLS)
+    installShadowCljs()
+    installDevOps()
+    provisionPython()
+
+    // IDEs
+    installVSC("python", "clojure")
+    installIntelliJ()
+}
diff --git a/src/test/kotlin/org/domaindrivenarchitecture/provs/configuration/application/ProvWithSudoKtTest.kt b/src/test/kotlin/org/domaindrivenarchitecture/provs/configuration/application/ProvWithSudoKtTest.kt
index a895618..8337d66 100644
--- a/src/test/kotlin/org/domaindrivenarchitecture/provs/configuration/application/ProvWithSudoKtTest.kt
+++ b/src/test/kotlin/org/domaindrivenarchitecture/provs/configuration/application/ProvWithSudoKtTest.kt
@@ -2,7 +2,7 @@ package org.domaindrivenarchitecture.provs.configuration.application
 
 import io.mockk.every
 import io.mockk.mockkStatic
-import io.mockk.unmockkStatic
+import io.mockk.unmockkAll
 import org.domaindrivenarchitecture.provs.framework.core.*
 import org.domaindrivenarchitecture.provs.framework.core.cli.getPasswordToConfigureSudoWithoutPassword
 import org.domaindrivenarchitecture.provs.framework.core.docker.provideContainer
@@ -49,7 +49,8 @@ class ProvWithSudoKtTest {
         assertFalse(canSudo1)
         assertTrue(canSudo2)
 
-        unmockkStatic(::getPasswordToConfigureSudoWithoutPassword)
+        // cleanup
+        unmockkAll()
     }
 
     @ExtensiveContainerTest
diff --git a/src/test/kotlin/org/domaindrivenarchitecture/provs/configuration/domain/CliTargetCommandTest.kt b/src/test/kotlin/org/domaindrivenarchitecture/provs/configuration/domain/CliTargetCommandTest.kt
index ba2f91a..24a5607 100644
--- a/src/test/kotlin/org/domaindrivenarchitecture/provs/configuration/domain/CliTargetCommandTest.kt
+++ b/src/test/kotlin/org/domaindrivenarchitecture/provs/configuration/domain/CliTargetCommandTest.kt
@@ -31,10 +31,8 @@ internal class TargetCliCommandKtTest {
         @AfterAll
         @JvmStatic
         internal fun afterAll() {
-            unmockkObject(Prov)
-            unmockkStatic(::local)
-            unmockkStatic(::remote)
-            unmockkStatic(::getPasswordToConfigureSudoWithoutPassword)
+            // cleanup
+            unmockkAll()
         }
     }
 
diff --git a/src/test/kotlin/org/domaindrivenarchitecture/provs/desktop/application/ApplicationKtTest.kt b/src/test/kotlin/org/domaindrivenarchitecture/provs/desktop/application/ApplicationKtTest.kt
index 4b2af6a..3971e23 100644
--- a/src/test/kotlin/org/domaindrivenarchitecture/provs/desktop/application/ApplicationKtTest.kt
+++ b/src/test/kotlin/org/domaindrivenarchitecture/provs/desktop/application/ApplicationKtTest.kt
@@ -65,12 +65,8 @@ internal class ApplicationKtTest {
         @AfterAll
         @JvmStatic
         internal fun afterAll() {
-            unmockkObject(Prov)
-            unmockkStatic(::local)
-            unmockkStatic(::remote)
-            unmockkStatic(::getConfig)
-            unmockkStatic(Prov::provisionDesktop)
-            unmockkStatic(::getPasswordToConfigureSudoWithoutPassword)
+            // cleanup
+            unmockkAll()
         }
     }
 
diff --git a/src/test/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/DesktopServiceKtTest.kt b/src/test/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/DesktopServiceKtTest.kt
index 5e7878f..4dc43a0 100644
--- a/src/test/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/DesktopServiceKtTest.kt
+++ b/src/test/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/DesktopServiceKtTest.kt
@@ -1,12 +1,14 @@
 package org.domaindrivenarchitecture.provs.desktop.domain
 
-import org.domaindrivenarchitecture.provs.framework.core.ProgressType
-import org.domaindrivenarchitecture.provs.framework.core.Prov
+import io.mockk.*
+import org.domaindrivenarchitecture.provs.desktop.infrastructure.installPpaFirefox
+import org.domaindrivenarchitecture.provs.desktop.infrastructure.verifyIdeSetup
+import org.domaindrivenarchitecture.provs.desktop.infrastructure.verifyOfficeSetup
+import org.domaindrivenarchitecture.provs.framework.core.*
 import org.domaindrivenarchitecture.provs.framework.core.docker.provideContainer
-import org.domaindrivenarchitecture.provs.framework.core.local
 import org.domaindrivenarchitecture.provs.framework.core.processors.ContainerStartMode
 import org.domaindrivenarchitecture.provs.framework.core.processors.ContainerUbuntuHostProcessor
-import org.domaindrivenarchitecture.provs.framework.core.remote
+import org.domaindrivenarchitecture.provs.framework.core.processors.DummyProcessor
 import org.domaindrivenarchitecture.provs.framework.ubuntu.filesystem.base.deleteFile
 import org.domaindrivenarchitecture.provs.test.defaultTestContainer
 import org.domaindrivenarchitecture.provs.test.tags.ExtensiveContainerTest
@@ -44,6 +46,70 @@ internal class DesktopServiceKtTest {
         }
     }
 
+    @Test
+    fun provisionDesktop_with_onlyModules_firefox_installs_firefox() {
+        // given
+        val prov = Prov.newInstance(DummyProcessor())
+        mockkStatic(Prov::installPpaFirefox)  // mocks all function in file Firefox.kt
+        every { any<Prov>().installPpaFirefox() } returns ProvResult(true, cmd = "mocked")
+
+        // when
+        prov.provisionDesktop(DesktopType.IDE, onlyModules = listOf("firefox"))
+
+        // then
+        verify(exactly = 1) { any<Prov>().installPpaFirefox() }
+
+        // cleanup
+        unmockkAll()
+    }
+
+    @Test
+    fun provisionDesktop_ide_with_onlyModules_verify_performs_verification() {
+        // given
+        val prov = Prov.newInstance(DummyProcessor())
+        mockkStatic(Prov::verifyIdeSetup)
+        mockkStatic(Prov::verifyOfficeSetup)
+        mockkStatic(Prov::provisionBasicDesktop)  // mocks function provisionBasicDesktop and all other functions in same file
+        every { any<Prov>().verifyIdeSetup() } returns ProvResult(true, cmd = "mocked")
+        every { any<Prov>().verifyOfficeSetup() } returns ProvResult(true, cmd = "mocked")
+        every { any<Prov>().provisionBasicDesktop(any(), any(), any(), any()) }
+
+        // when
+        prov.provisionDesktop(DesktopType.IDE, onlyModules = listOf("verify"))
+
+        // then
+        verify(exactly = 1) { any<Prov>().verifyIdeSetup() }
+        verify(exactly = 0) { any<Prov>().verifyOfficeSetup() }
+        verify(exactly = 0) { any<Prov>().provisionBasicDesktop(any(), any(), any(), any()) }
+
+        // cleanup
+        unmockkAll()
+    }
+
+    @Test
+    fun provisionDesktop_office_with_onlyModules_verify_performs_verification() {
+        // given
+        val prov = Prov.newInstance(DummyProcessor())
+        mockkStatic(Prov::verifyIdeSetup)
+        mockkStatic(Prov::verifyOfficeSetup)
+        mockkStatic(Prov::provisionBasicDesktop)
+        every { any<Prov>().verifyIdeSetup() } returns ProvResult(true, cmd = "mocked")
+        every { any<Prov>().verifyOfficeSetup() } returns ProvResult(true, cmd = "mocked")
+        every { any<Prov>().provisionBasicDesktop(any(), any(), any(), any()) }
+
+        // when
+        prov.provisionDesktop(DesktopType.OFFICE, onlyModules = listOf("verify"))
+
+        // then
+        verify(exactly = 0) { any<Prov>().verifyIdeSetup() }
+        verify(exactly = 1) { any<Prov>().verifyOfficeSetup() }
+        verify(exactly = 0) { any<Prov>().provisionBasicDesktop(any(), any(), any(), any()) }
+
+        // cleanup
+        unmockkAll()
+    }
+
+
     @ExtensiveContainerTest
     @Disabled("Takes very long, enable if you want to test a desktop setup")
     fun provisionDesktop() {