diff --git a/firebase-vertexai/src/test/java/com/google/firebase/vertexai/StreamingSnapshotTests.kt b/firebase-vertexai/src/test/java/com/google/firebase/vertexai/StreamingSnapshotTests.kt
index 499bd12c0b9..01ee263fd2c 100644
--- a/firebase-vertexai/src/test/java/com/google/firebase/vertexai/StreamingSnapshotTests.kt
+++ b/firebase-vertexai/src/test/java/com/google/firebase/vertexai/StreamingSnapshotTests.kt
@@ -86,6 +86,17 @@ internal class StreamingSnapshotTests {
       }
     }
 
+  @Test
+  fun `unknown enum in finish reason`() =
+    goldenStreamingFile("failure-unknown-finish-enum.txt") {
+      val responses = model.generateContentStream("prompt")
+
+      withTimeout(testTimeout) {
+        val exception = shouldThrow<ResponseStoppedException> { responses.collect() }
+        exception.response.candidates.first().finishReason shouldBe FinishReason.UNKNOWN
+      }
+    }
+
   @Test
   fun `quotes escaped`() =
     goldenStreamingFile("success-quotes-escaped.txt") {
@@ -184,4 +195,20 @@ internal class StreamingSnapshotTests {
 
       withTimeout(testTimeout) { shouldThrow<InvalidAPIKeyException> { responses.collect() } }
     }
+
+  @Test
+  fun `invalid json`() =
+    goldenStreamingFile("failure-invalid-json.txt") {
+      val responses = model.generateContentStream("prompt")
+
+      withTimeout(testTimeout) { shouldThrow<SerializationException> { responses.collect() } }
+    }
+
+  @Test
+  fun `malformed content`() =
+    goldenStreamingFile("failure-malformed-content.txt") {
+      val responses = model.generateContentStream("prompt")
+
+      withTimeout(testTimeout) { shouldThrow<SerializationException> { responses.collect() } }
+    }
 }
diff --git a/firebase-vertexai/src/test/java/com/google/firebase/vertexai/UnarySnapshotTests.kt b/firebase-vertexai/src/test/java/com/google/firebase/vertexai/UnarySnapshotTests.kt
index f55f71ee34e..41127bd0530 100644
--- a/firebase-vertexai/src/test/java/com/google/firebase/vertexai/UnarySnapshotTests.kt
+++ b/firebase-vertexai/src/test/java/com/google/firebase/vertexai/UnarySnapshotTests.kt
@@ -38,6 +38,7 @@ import io.kotest.matchers.nulls.shouldNotBeNull
 import io.kotest.matchers.should
 import io.kotest.matchers.shouldBe
 import io.kotest.matchers.shouldNotBe
+import io.kotest.matchers.string.shouldContain
 import io.kotest.matchers.string.shouldNotBeEmpty
 import io.kotest.matchers.types.shouldBeInstanceOf
 import io.ktor.http.HttpStatusCode
@@ -84,6 +85,56 @@ internal class UnarySnapshotTests {
         response.candidates.isEmpty() shouldBe false
         val candidate = response.candidates.first()
         candidate.safetyRatings.any { it.category == HarmCategory.UNKNOWN } shouldBe true
+        response.promptFeedback?.safetyRatings?.any { it.category == HarmCategory.UNKNOWN } shouldBe
+          true
+      }
+    }
+
+  @Test
+  fun `unknown enum in finish reason`() =
+    goldenUnaryFile("failure-unknown-enum-finish-reason.json") {
+      withTimeout(testTimeout) {
+        shouldThrow<ResponseStoppedException> { model.generateContent("prompt") } should
+          {
+            it.response.candidates.first().finishReason shouldBe FinishReason.UNKNOWN
+          }
+      }
+    }
+
+  @Test
+  fun `unknown enum in block reason`() =
+    goldenUnaryFile("failure-unknown-enum-prompt-blocked.json") {
+      withTimeout(testTimeout) {
+        shouldThrow<PromptBlockedException> { model.generateContent("prompt") } should
+          {
+            it.response.promptFeedback?.blockReason shouldBe BlockReason.UNKNOWN
+          }
+      }
+    }
+
+  @Test
+  fun `quotes escaped`() =
+    goldenUnaryFile("success-quote-reply.json") {
+      withTimeout(testTimeout) {
+        val response = model.generateContent("prompt")
+
+        response.candidates.isEmpty() shouldBe false
+        response.candidates.first().content.parts.isEmpty() shouldBe false
+        val part = response.candidates.first().content.parts.first() as TextPart
+        part.text shouldContain "\""
+      }
+    }
+
+  @Test
+  fun `safetyRatings missing`() =
+    goldenUnaryFile("success-missing-safety-ratings.json") {
+      withTimeout(testTimeout) {
+        val response = model.generateContent("prompt")
+
+        response.candidates.isEmpty() shouldBe false
+        response.candidates.first().content.parts.isEmpty() shouldBe false
+        response.candidates.first().safetyRatings.isEmpty() shouldBe true
+        response.promptFeedback?.safetyRatings?.isEmpty() shouldBe true
       }
     }
 
@@ -147,6 +198,15 @@ internal class UnarySnapshotTests {
       }
     }
 
+  @Test
+  fun `stopped for safety with no content`() =
+    goldenUnaryFile("failure-finish-reason-safety-no-content.json") {
+      withTimeout(testTimeout) {
+        val exception = shouldThrow<ResponseStoppedException> { model.generateContent("prompt") }
+        exception.response.candidates.first().finishReason shouldBe FinishReason.SAFETY
+      }
+    }
+
   @Test
   fun `citation returns correctly`() =
     goldenUnaryFile("success-citations.json") {
@@ -292,4 +352,79 @@ internal class UnarySnapshotTests {
         callPart.args["current"] shouldBe "true"
       }
     }
+
+  @Test
+  fun `function call contains no arguments`() =
+    goldenUnaryFile("success-function-call-no-arguments.json") {
+      withTimeout(testTimeout) {
+        val response = model.generateContent("prompt")
+        val callPart = response.functionCalls.shouldNotBeEmpty().first()
+
+        callPart.name shouldBe "current_time"
+        callPart.args.isEmpty() shouldBe true
+      }
+    }
+
+  @Test
+  fun `function call contains arguments`() =
+    goldenUnaryFile("success-function-call-with-arguments.json") {
+      withTimeout(testTimeout) {
+        val response = model.generateContent("prompt")
+        val callPart = response.functionCalls.shouldNotBeEmpty().first()
+
+        callPart.name shouldBe "sum"
+        callPart.args["x"] shouldBe "4"
+        callPart.args["y"] shouldBe "5"
+      }
+    }
+
+  @Test
+  fun `function call with parallel calls`() =
+    goldenUnaryFile("success-function-call-parallel-calls.json") {
+      withTimeout(testTimeout) {
+        val response = model.generateContent("prompt")
+        val callList = response.functionCalls
+
+        callList.size shouldBe 3
+        callList.forEach {
+          it.name shouldBe "sum"
+          it.args.size shouldBe 2
+        }
+      }
+    }
+
+  @Test
+  fun `function call with mixed content`() =
+    goldenUnaryFile("success-function-call-mixed-content.json") {
+      withTimeout(testTimeout) {
+        val response = model.generateContent("prompt")
+        val callList = response.functionCalls
+
+        response.text shouldBe "The sum of [1, 2, 3] is"
+        callList.size shouldBe 2
+        callList.forEach { it.args.size shouldBe 2 }
+      }
+    }
+
+  @Test
+  fun `countTokens succeeds`() =
+    goldenUnaryFile("success-total-tokens.json") {
+      withTimeout(testTimeout) {
+        val response = model.countTokens("prompt")
+
+        response.totalTokens shouldBe 6
+        response.totalBillableCharacters shouldBe 16
+      }
+    }
+
+  @Test
+  fun `countTokens succeeds with no billable characters`() =
+    goldenUnaryFile("success-no-billable-characters.json") {
+      withTimeout(testTimeout) {
+        val response = model.countTokens("prompt")
+
+        response.totalTokens shouldBe 258
+        response.totalBillableCharacters shouldBe 0
+      }
+    }
 }