Add tests for expand.py

Author: manta1130

.github/workflows/ci.yml

@@ -95,3 +95,21 @@ jobs:
           args: --workspace --no-fail-fast
         env:
           RUST_BACKTRACE: full
+
+  expander_test:
+    strategy:
+      fail-fast: false
+      matrix:
+        toolchain:
+          - 1.42.0-x86_64-unknown-linux-gnu
+          - stable-x86_64-unknown-linux-gnu
+
+    name: Expand_test (${{ matrix.toolchain }})
+    runs-on: ubuntu-18.04
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: expand.py tests
+        run: bash ./.github/workflows/test-expand.sh

.github/workflows/test-expand.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+TEST_MODULES=(convolution dsu fenwicktree lazysegtree math maxflow mincostflow modint scc segtree string twosat)
+TMP_PATH=$(mktemp -d)
+SCRIPT_DIR=$(cd $(dirname $0); pwd)
+TEST_FILE="test.rs"
+FILE_HEAD="fn main() {}"
+
+for MODULE in ${TEST_MODULES[@]};do
+     python3 $SCRIPT_DIR/../../expand.py $MODULE > $TMP_PATH/$TEST_FILE
+     echo $FILE_HEAD >> $TMP_PATH/$TEST_FILE
+     rustc $TMP_PATH/$TEST_FILE 2>/dev/null
+     if [ $? -ne 0 ];then
+        echo "Error compiling for $MODULE"
+        exit 1
+    else
+        echo "Test passed($MODULE)"
+     fi
+done