runtime-exec

Author: markhuang1212

runtime-exec/.gitignore

@@ -0,0 +1 @@
+runtime-exec

runtime-exec/main.go

@@ -1,5 +1,91 @@
+// The program read the environment `TEST_CASE_DIR`,
+// accepts the tompiled executable from stdin
+// If the test case passes, it exit with status 0
+// In case error occurred, it output the error message
+// to stderr, and exit with status 1.
+
 package main
 
+import (
+	"bufio"
+	"encoding/json"
+	"io"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+
+	"github.com/markhuang1212/code-grader/types"
+)
+
 func main() {
 
+	prog, err := os.OpenFile("/tmp/a.out", os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0777)
+	if err != nil {
+		panic(err)
+	}
+
+	io.Copy(prog, os.Stdin)
+	prog.Close()
+
+	testCaseDir := os.Getenv("TEST_CASE_DIR")
+	testCaseJson, err := os.ReadFile(filepath.Join(testCaseDir, "testcase.json"))
+	if err != nil {
+		panic(err)
+	}
+
+	var testCaseOpt types.TestCaseOptions
+	json.Unmarshal(testCaseJson, &testCaseOpt)
+
+	inputFile, err := os.Open(filepath.Join(testCaseDir, testCaseOpt.RuntimeOptions.StdinPath))
+	if err != nil {
+		panic(err)
+	}
+
+	answerFile, err := os.Open(filepath.Join(testCaseDir, testCaseOpt.RuntimeOptions.StdoutPath))
+	if err != nil {
+		panic(err)
+	}
+	answerScanner := bufio.NewScanner(answerFile)
+	answerScanner.Split(bufio.ScanWords)
+
+	cmd := exec.Command("/tmp/a.out")
+
+	progOutput, err := cmd.StdoutPipe()
+	if err != nil {
+		panic(err)
+	}
+	progOutputScanner := bufio.NewScanner(progOutput)
+	progOutputScanner.Split(bufio.ScanWords)
+
+	cmd.Stdin = inputFile
+	err = cmd.Start()
+	if err != nil {
+		panic(err)
+	}
+
+	for {
+
+		r1 := answerScanner.Scan()
+		r2 := progOutputScanner.Scan()
+
+		if r1 == false && r2 == false {
+			os.Exit(0)
+		}
+
+		if r1 == false || r2 == false {
+			log.Println("Wrong Answer!")
+			os.Exit(1)
+		}
+
+		w1 := answerScanner.Text()
+		w2 := progOutputScanner.Text()
+
+		if w1 != w2 {
+			log.Println("Wrong Answer!")
+			os.Exit(1)
+		}
+
+	}
+
 }

testcases/example-1/input.txt

@@ -1,4 +1 @@
-// Input Data
-// Line starting with `//` and empty lines will be ignored
-
-Hello
+HelloWorld

testcases/example-1/output.txt

@@ -1,4 +1 @@
-// Output Data
-// Line starting with `//` will be ignored
-
-World
+Hello

types/TestCaseOptions.go

@@ -4,6 +4,7 @@ type TestCaseOptions struct {
 	TestCaseName      string
 	PreprocessOptions PreprocessOptions
 	CompilerOptions   CompilerOptions
+	RuntimeOptions    RuntimeOptions
 }
 
 type PreprocessOptions struct {