test: add test for OnepasswordAccessCredentials

Author: Jan Phillip Kretzschmar

build.gradle.kts

@@ -31,4 +31,5 @@ dependencies {
 
     testImplementation("junit:junit:4.13.2")
     testImplementation(gradleTestKit())
+    testImplementation("io.mockk:mockk:1.12.3")
 }

src/test/java/com/valtechmobility/gradle/credentials/onepassword/OnepasswordAccessCredentialsTest.kt

@@ -0,0 +1,79 @@
+package com.valtechmobility.gradle.credentials.onepassword
+
+import io.mockk.every
+import io.mockk.mockk
+import io.mockk.mockkStatic
+import io.mockk.unmockkAll
+import io.mockk.verify
+import org.junit.After
+import org.junit.Before
+import org.junit.Test
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+internal class OnepasswordAccessCredentialsTest {
+
+    private lateinit var credentials: OnepasswordAccessCredentials
+
+    @Before
+    fun setup() {
+        credentials = OnepasswordAccessCredentials(EXAMPLE_VAULT_KEY)
+        mockkStatic(Runtime::getRuntime)
+        every { Runtime.getRuntime().exec(any<String>()) } returns mockk {
+            every { waitFor() } returns 0
+            every { inputStream } returns EXAMPLE_RESULT.byteInputStream()
+            every { destroyForcibly() } returns this
+        }
+    }
+
+    @After
+    fun teardown() {
+        unmockkAll()
+    }
+
+    @Test
+    fun credentialsCreated_usernameRequested_usernameQueriedFromOP() {
+        credentials.username
+        verify {
+            Runtime.getRuntime()
+            .exec("op item get \"$EXAMPLE_VAULT_KEY\" --fields label=username")
+        }
+    }
+
+    @Test
+    fun credentialsCreated_passwordRequested_passwordQueriedFromOP() {
+        credentials.password
+        verify {
+            Runtime.getRuntime()
+                .exec("op item get \"$EXAMPLE_VAULT_KEY\" --fields label=password")
+        }
+    }
+
+    @Test
+    fun credentialsCreated_usernameRequestedMultipleTimes_usernameQueriedFromOPOnce() {
+        credentials.username
+        credentials.username
+        verify(exactly = 1) {
+            Runtime.getRuntime()
+                .exec("op item get \"$EXAMPLE_VAULT_KEY\" --fields label=username")
+        }
+    }
+
+    @Test
+    fun credentialsCreated_passwordRequestedMultipleTimes_passwordQueriedFromOPOnce() {
+        credentials.password
+        credentials.password
+        verify(exactly = 1) {
+            Runtime.getRuntime()
+                .exec("op item get \"$EXAMPLE_VAULT_KEY\" --fields label=password")
+        }
+    }
+
+    companion object {
+        private const val EXAMPLE_VAULT_KEY = "EXAMPLE_VAULT_KEY"
+        private const val EXAMPLE_RESULT = "EXAMPLE_RESULT"
+    }
+}