Change EXPECT_NE(pkt, nullptr) to ASSERT

There's not much value in proceeding and then crashing.

Suggested by James Zern.

Change-Id: I20a0a407e80e0f38a2e40be001947afd40d1ee14
diff --git a/test/avif_progressive_test.cc b/test/avif_progressive_test.cc
index f65509d5..2a28ca3 100644
--- a/test/avif_progressive_test.cc
+++ b/test/avif_progressive_test.cc
@@ -68,7 +68,7 @@
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));
   aom_codec_iter_t iter = nullptr;
   const aom_codec_cx_pkt_t *pkt = aom_codec_get_cx_data(&enc, &iter);
-  EXPECT_NE(pkt, nullptr);
+  ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0x1f0011.
   EXPECT_EQ(pkt->data.frame.flags & AOM_FRAME_IS_KEY, AOM_FRAME_IS_KEY);
@@ -89,7 +89,7 @@
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, encode_flags));
   iter = nullptr;
   pkt = aom_codec_get_cx_data(&enc, &iter);
-  EXPECT_NE(pkt, nullptr);
+  ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0.
   EXPECT_EQ(pkt->data.frame.flags & AOM_FRAME_IS_KEY, 0u);
@@ -157,7 +157,7 @@
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));
   aom_codec_iter_t iter = nullptr;
   const aom_codec_cx_pkt_t *pkt = aom_codec_get_cx_data(&enc, &iter);
-  EXPECT_NE(pkt, nullptr);
+  ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0x1f0011.
   EXPECT_EQ(pkt->data.frame.flags & AOM_FRAME_IS_KEY, AOM_FRAME_IS_KEY);
@@ -173,7 +173,7 @@
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, encode_flags));
   iter = nullptr;
   pkt = aom_codec_get_cx_data(&enc, &iter);
-  EXPECT_NE(pkt, nullptr);
+  ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0.
   EXPECT_EQ(pkt->data.frame.flags & AOM_FRAME_IS_KEY, 0u);
@@ -244,7 +244,7 @@
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));
   aom_codec_iter_t iter = nullptr;
   const aom_codec_cx_pkt_t *pkt = aom_codec_get_cx_data(&enc, &iter);
-  EXPECT_NE(pkt, nullptr);
+  ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0x1f0011.
   EXPECT_EQ(pkt->data.frame.flags & AOM_FRAME_IS_KEY, AOM_FRAME_IS_KEY);
@@ -260,7 +260,7 @@
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, encode_flags));
   iter = nullptr;
   pkt = aom_codec_get_cx_data(&enc, &iter);
-  EXPECT_NE(pkt, nullptr);
+  ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0.
   EXPECT_EQ(pkt->data.frame.flags & AOM_FRAME_IS_KEY, 0u);
diff --git a/test/deltaq_mode_test.cc b/test/deltaq_mode_test.cc
index 8925f85..38e25fb 100644
--- a/test/deltaq_mode_test.cc
+++ b/test/deltaq_mode_test.cc
@@ -69,7 +69,7 @@
   EXPECT_EQ(aom_codec_encode(&enc, &img, 0, 1, 0), AOM_CODEC_OK);
   aom_codec_iter_t iter = nullptr;
   const aom_codec_cx_pkt_t *pkt = aom_codec_get_cx_data(&enc, &iter);
-  EXPECT_NE(pkt, nullptr);
+  ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0x1f0011.
   EXPECT_EQ(pkt->data.frame.flags & AOM_FRAME_IS_KEY, AOM_FRAME_IS_KEY);
@@ -128,7 +128,7 @@
   EXPECT_EQ(aom_codec_encode(&enc, &img, 0, 1, 0), AOM_CODEC_OK);
   aom_codec_iter_t iter = nullptr;
   const aom_codec_cx_pkt_t *pkt = aom_codec_get_cx_data(&enc, &iter);
-  EXPECT_NE(pkt, nullptr);
+  ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0x1f0011.
   EXPECT_EQ(pkt->data.frame.flags & AOM_FRAME_IS_KEY, AOM_FRAME_IS_KEY);
diff --git a/test/forced_max_frame_width_height_test.cc b/test/forced_max_frame_width_height_test.cc
index b0f5421..2e019b6 100644
--- a/test/forced_max_frame_width_height_test.cc
+++ b/test/forced_max_frame_width_height_test.cc
@@ -160,7 +160,7 @@
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));
   aom_codec_iter_t iter = nullptr;
   const aom_codec_cx_pkt_t *pkt = aom_codec_get_cx_data(&enc, &iter);
-  EXPECT_NE(pkt, nullptr);
+  ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0x1f0011.
   EXPECT_NE(pkt->data.frame.flags & AOM_FRAME_IS_KEY, 0u);
@@ -183,7 +183,7 @@
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));
   iter = nullptr;
   pkt = aom_codec_get_cx_data(&enc, &iter);
-  EXPECT_NE(pkt, nullptr);
+  ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0.
   EXPECT_EQ(pkt->data.frame.flags & AOM_FRAME_IS_KEY, 0u);
diff --git a/test/wiener_test.cc b/test/wiener_test.cc
index ad1474d..a76197f 100644
--- a/test/wiener_test.cc
+++ b/test/wiener_test.cc
@@ -783,7 +783,7 @@
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));
   aom_codec_iter_t iter = nullptr;
   const aom_codec_cx_pkt_t *pkt = aom_codec_get_cx_data(&enc, &iter);
-  EXPECT_NE(pkt, nullptr);
+  ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0x1f0011.
   EXPECT_EQ(pkt->data.frame.flags & AOM_FRAME_IS_KEY, AOM_FRAME_IS_KEY);