example tests: Make failures due to incorrect bin path easier to diagnose.

Add elog() to tools_common, and checks for the executable in each test.

Change-Id: I3c6334eca62c0b56040d91145abbe1bf5f9c763c

test/decode_to_md5.sh

@@ -34,7 +34,10 @@ decode_to_md5() {
   local expected_md5="$3"
   local output_file="${VPX_TEST_OUTPUT_DIR}/decode_to_md5_${codec}"
 
-  [ -x "${decoder}" ] || return 1
+  if [ ! -x "${decoder}" ]; then
+    elog "${decoder} does not exist or is not executable."
+    return 1
+  fi
 
   eval "${decoder}" "${input_file}" "${output_file}" ${devnull}
 

test/decode_with_drops.sh

@@ -34,7 +34,10 @@ decode_with_drops() {
   local output_file="${VPX_TEST_OUTPUT_DIR}/decode_with_drops_${codec}"
   local drop_mode="$3"
 
-  [ -x "${decoder}" ] || return 1
+  if [ ! -x "${decoder}" ]; then
+    elog "${decoder} does not exist or is not executable."
+    return 1
+  fi
 
   eval "${decoder}" "${input_file}" "${output_file}" "${drop_mode}" ${devnull}
 

test/postproc.sh

@@ -32,7 +32,10 @@ postproc() {
   local codec="$2"
   local output_file="${VPX_TEST_OUTPUT_DIR}/postproc_${codec}.raw"
 
-  [ -x "${decoder}" ] || return 1
+  if [ ! -x "${decoder}" ]; then
+    elog "${decoder} does not exist or is not executable."
+    return 1
+  fi
 
   eval "${decoder}" "${input_file}" "${output_file}" ${devnull}
 

test/resize_util.sh

@@ -33,7 +33,10 @@ resize_util() {
 
   # resize_util is available only when CONFIG_SHARED is disabled.
   if [ -z "$(vpx_config_option_enabled CONFIG_SHARED)" ]; then
-    [ -x "${resizer}" ] || return 1
+    if [ ! -x "${resizer}" ]; then
+      elog "${resizer} does not exist or is not executable."
+      return 1
+    fi
 
     eval "${resizer}" "${YUV_RAW_INPUT}" \
         "${YUV_RAW_INPUT_WIDTH}x${YUV_RAW_INPUT_HEIGHT}" \

test/simple_decoder.sh

@@ -32,7 +32,10 @@ simple_decoder() {
   local codec="$2"
   local output_file="${VPX_TEST_OUTPUT_DIR}/simple_decoder_${codec}.raw"
 
-  [ -x "${decoder}" ] || return 1
+  if [ ! -x "${decoder}" ]; then
+    elog "${decoder} does not exist or is not executable."
+    return 1
+  fi
 
   eval "${decoder}" "${input_file}" "${output_file}" ${devnull}
 

test/simple_encoder.sh

@@ -29,7 +29,10 @@ simple_encoder() {
   local codec="$1"
   local output_file="${VPX_TEST_OUTPUT_DIR}/simple_encoder_${codec}.ivf"
 
-  [ -x "${encoder}" ] || return 1
+  if [ ! -x "${encoder}" ]; then
+    elog "${encoder} does not exist or is not executable."
+    return 1
+  fi
 
   eval "${encoder}" "${codec}" "${YUV_RAW_INPUT_WIDTH}" \
       "${YUV_RAW_INPUT_HEIGHT}" "${YUV_RAW_INPUT}" "${output_file}" 9999 \

test/tools_common.sh

@@ -17,6 +17,10 @@ VPX_TEST_TOOLS_COMMON_SH=included
 set -e
 devnull='> /dev/null 2>&1'
 
+elog() {
+  echo "$@" 1>&2
+}
+
 vlog() {
   if [ "${VPX_TEST_VERBOSE_OUTPUT}" = "yes" ]; then
     echo "$@"

test/twopass_encoder.sh

@@ -29,7 +29,10 @@ twopass_encoder() {
   local codec="$1"
   local output_file="${VPX_TEST_OUTPUT_DIR}/twopass_encoder_${codec}.ivf"
 
-  [ -x "${encoder}" ] || return 1
+  if [ ! -x "${encoder}" ]; then
+    elog "${encoder} does not exist or is not executable."
+    return 1
+  fi
 
   eval "${encoder}" "${codec}" "${YUV_RAW_INPUT_WIDTH}" \
       "${YUV_RAW_INPUT_HEIGHT}" "${YUV_RAW_INPUT}" "${output_file}" \

test/vp8cx_set_ref.sh

@@ -34,7 +34,10 @@ vpx_set_ref() {
   local output_file="${VPX_TEST_OUTPUT_DIR}/vp8cx_set_ref_${codec}.ivf"
   local ref_frame_num=90
 
-  [ -x "${encoder}" ] || return 1
+  if [ ! -x "${encoder}" ]; then
+    elog "${encoder} does not exist or is not executable."
+    return 1
+  fi
 
   eval "${encoder}" "${YUV_RAW_INPUT_WIDTH}" "${YUV_RAW_INPUT_HEIGHT}" \
       "${YUV_RAW_INPUT}" "${output_file}" "${ref_frame_num}" \

test/vp9_spatial_svc_encoder.sh

@@ -34,7 +34,10 @@ vp9_spatial_svc_encoder() {
 
   shift
 
-  [ -x "${encoder}" ] || return 1
+  if [ ! -x "${encoder}" ]; then
+    elog "${encoder} does not exist or is not executable."
+    return 1
+  fi
 
   eval "${encoder}" -w "${YUV_RAW_INPUT_WIDTH}" -h "${YUV_RAW_INPUT_HEIGHT}" \
       -k "${max_kf}" -f "${frames_to_encode}" "$@" "${YUV_RAW_INPUT}" \

test/vpx_temporal_svc_encoder.sh

@@ -39,7 +39,10 @@ vpx_tsvc_encoder() {
 
   shift 2
 
-  [ -x "${encoder}" ] || return 1
+  if [ ! -x "${encoder}" ]; then
+    elog "${encoder} does not exist or is not executable."
+    return 1
+  fi
 
   eval "${encoder}" "${YUV_RAW_INPUT}" "${output_file}" "${codec}" \
       "${YUV_RAW_INPUT_WIDTH}" "${YUV_RAW_INPUT_HEIGHT}" \