Move tests to "test" directory. NFC. (#745)

test/test_bazel.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+echo "test bazel"
+
+set -x
+set -e
+
+# Get the latest version number from emscripten-releases-tag.txt.
+VER=$(grep -oP '(?<=latest\": \")([\d\.]+)(?=\")' \
+        emscripten-releases-tags.txt \
+      | sed --expression "s/\./\\\./g")
+# Based on the latest version number, get the commit hash for that version.
+HASH=$(grep "${VER}" emscripten-releases-tags.txt \
+      | grep -v latest \
+      | cut -f4 -d\")
+
+FAILMSG="!!! scripts/update_bazel_toolchain.sh needs to be run !!!"
+
+# Ensure the WORKSPACE file is up to date with the latest version.
+grep ${VER} bazel/WORKSPACE || (echo ${FAILMSG} && false)
+grep ${HASH} bazel/WORKSPACE || (echo ${FAILMSG} && false)
+
+cd bazel
+bazel build //hello-world:hello-world-wasm
+bazel build //hello-world:hello-world-wasm-simd