Tests for features we never knew we had

mock4k/README.md

@@ -12,18 +12,20 @@ Super-simple and super-fast Mocking library. Use when you really don't want to i
 - ✅ Simple
 - ✅ Fast
 - ✅ Relaxed/Strict modes
+- ✅ Coroutines
+- ✅ Functions
 - ❌ Verification
 - ❌ Argument capture
-- ❌ Partials
+- ❌ Partial mocking
 - ❌ Spies
 - ❌ Any evil Powermock nonsense
 
 ### Supplementary features:
-- ❌ Wannabe-functional
-- ❌ Multiplatform
 - ❌ Spring-support
-- ❌ Coroutines
+- ❌ Multiplatform
 - ❌ Annotations
+- ❌ Blockchain
+- ❌ AI-powered
 
 ## Installation
 
@@ -44,7 +46,8 @@ interface Wallet {
 
 class AppleStore(private val wallet: Wallet) {
  fun buyMacBook() = wallet.pay("MacBook", 9999)
- fun seeGenius() {}
+ suspend fun seeGenius() = "hello!"
+ fun buyMacbookUsing(pay: (String, Int) -> Int?) = pay("MacBook", 9999)
 }
 
 class AppleStoreTest {
@@ -67,12 +70,21 @@ class AppleStoreTest {
  val appleStore = AppleStore(mock(MockMode.Relaxed))
  assertThat(appleStore.buyMacBook(), equalTo(null))
  }
-
+ 
  @Test
  fun `see genius`() {
- // when there are no calls expected
- val appleStore = AppleStore(mock()).seeGenius()
- assertThat(appleStore.buyMacBook(), equalTo(Unit))
+ val appleStore = AppleStore(mock(Relaxed))
+
+ runBlocking {
+ // suspend calls
+ assertThat(appleStore.seeGenius(), equalTo("hello!"))
+ }
+ }
+
+ @Test
+ fun `bus using someone else's money`() {
+ val appleStore = AppleStore(mock())
+ appleStore.buyMacbookUsing(mock())
  }
 }
 ```

mock4k/build.gradle

@@ -1 +1,5 @@
 description = 'ForkHandles: The very cheapest mocking framework platform.'
+
+dependencies {
+ testImplementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.7.3")
+}

mock4k/src/test/kotlin/dev/forkhandles/mock4k/MockTest.kt

@@ -5,6 +5,7 @@ import com.natpryce.hamkrest.assertion.assertThat
 import com.natpryce.hamkrest.equalTo
 import dev.forkhandles.mock4k.MockMode.Relaxed
 import dev.forkhandles.mock4k.MockMode.Strict
+import kotlinx.coroutines.runBlocking
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.fail
 
@@ -14,9 +15,12 @@ interface Wallet {
 
 class AppleStore(private val wallet: Wallet) {
  fun buyMacBook() = wallet.pay("MacBook", 9999)
- fun seeGenius(): String? = if (true) "sorted" else null
+ suspend fun seeGenius(): String = "sorted"
+ fun buyMacbookUsing(fn: (String, Int) -> Int?) = fn("MacBook", 9999)
+ suspend fun buyMacbookLater() = wallet.pay("MacBook", 9999)
 }
 
+
 class MockTest {
  @Test
  fun `mock call is strict by default`() {
@@ -48,14 +52,45 @@ class MockTest {
  assertThat(appleStore.buyMacBook(), absent())
  }
 
+ @Test
+ fun `suspend mock call supported`() {
+ val appleStore = AppleStore(mock())
+
+ runBlocking {
+ assertThat(appleStore.seeGenius(), equalTo("sorted"))
+ }
+ }
+
+ @Test
+ fun `function mock supported`() {
+ try {
+ AppleStore(mock()).buyMacbookUsing(mock())
+ fail("didn't throw")
+ } catch (e: UnstubbedCall) {
+ assertThat(e.message, equalTo("Unstubbed call: Function2.invoke(MacBook, 9999)"))
+ }
+ }
+
  @Test
  fun `fails on unexpected call`() {
  try {
- val appleStore = AppleStore(mock())
- appleStore.buyMacBook()
+ AppleStore(mock<Wallet>()).buyMacBook()
  fail("didn't throw")
  } catch (e: UnstubbedCall) {
  assertThat(e.message, equalTo("Unstubbed call: Wallet.pay(MacBook, 9999)"))
  }
  }
+
+ @Test
+ fun `suspend mock call failure`() {
+
+ runBlocking {
+ try {
+ AppleStore(mock<Wallet>()).buyMacbookLater()
+ fail("didn't throw")
+ } catch (e: UnstubbedCall) {
+ assertThat(e.message, equalTo("Unstubbed call: Wallet.pay(MacBook, 9999)"))
+ }
+ }
+ }
 }