Run solc-js tests on emscripten build

.travis.yml

@@ -191,6 +191,7 @@ before_script:
       && scripts/create_source_tarball.sh)
 
 script:
+    - test $SOLC_EMSCRIPTEN != On || (scripts/test_emscripten.sh)
     - test $SOLC_DOCS != On || (scripts/docs.sh)
     - test $SOLC_TESTS != On || (cd $TRAVIS_BUILD_DIR && scripts/tests.sh)
     - test $SOLC_STOREBYTECODE != On || (cd $TRAVIS_BUILD_DIR && scripts/bytecodecompare/storebytecode.sh)

scripts/test_emscripten.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+
+#------------------------------------------------------------------------------
+# Bash script to execute the Solidity tests.
+#
+# The documentation for solidity is hosted at:
+#
+#     https://solidity.readthedocs.org
+#
+# ------------------------------------------------------------------------------
+# This file is part of solidity.
+#
+# solidity is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# solidity is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with solidity.  If not, see <http://www.gnu.org/licenses/>
+#
+# (c) 2017 solidity contributors.
+#------------------------------------------------------------------------------
+
+set -e
+
+REPO_ROOT="$(dirname "$0")"/..
+
+cd $REPO_ROOT/build
+
+echo "Preparing solc-js..."
+rm -rf solc-js
+git clone https://github.com/ethereum/solc-js
+cd solc-js
+npm install
+
+# Replace soljson with current build
+echo "Replacing soljson.js"
+rm -f soljson.js
+# Make a copy because paths might not be absolute
+cp ../solc/soljson.js soljson.js
+
+# Update version (needed for some tests)
+VERSION=`$REPO_ROOT/build/solc/solc --version | sed -ne "s/^Version: \([0-9]*.[0-9]*.[0-9]*\).*/\1/p"`
+echo "Updating package.json to version $VERSION"
+npm version $VERSION
+
+echo "Running solc-js tests..."
+npm run test

scripts/travis-emscripten/build_emscripten.sh

@@ -99,6 +99,6 @@ cp soljson.js upload/
 
 OUTPUT_SIZE=`ls -la build/solc/soljson.js`
 
-echo "Emscripten output size: ${OUTPUT_SIZE}"
+echo "Emscripten output size: $OUTPUT_SIZE"
 
 echo -en 'travis_fold:end:compiling_solidity\\r'