Add remaining

main.go

@@ -50,7 +50,9 @@ import (
 	// "git.sangeeth.dev/gobyexample/httpserver"
 	// "git.sangeeth.dev/gobyexample/httpctx"
 	// "git.sangeeth.dev/gobyexample/exec"
-	"git.sangeeth.dev/gobyexample/signals"
+	// "git.sangeeth.dev/gobyexample/signals"
+	"git.sangeeth.dev/gobyexample/spawn"
+	_ "git.sangeeth.dev/gobyexample/testbench"
 )
 
 func main() {
@@ -103,5 +105,6 @@ func main() {
 	// httpserver.HttpServer()
 	// httpctx.HttpCtx()
 	// exec.Exec()
-	signals.Signals()
+	// signals.Signals()
+	spawn.Spawn()
 }

spawn/spawn.go

@@ -0,0 +1,55 @@
+package spawn
+
+import (
+	"fmt"
+	"io"
+	"os/exec"
+)
+
+func Spawn() {
+	// Cmd object represents the external process
+	dateCmd := exec.Command("date")
+
+	// Runs and wait for it to finish, output collected
+	dateOut, err := dateCmd.Output()
+
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println("> date")
+	fmt.Println(string(dateOut))
+
+	_, err = exec.Command("date", "-x").Output()
+	if err != nil {
+		switch e := err.(type) {
+		case *exec.Error:
+			fmt.Println("failed executing:", err)
+		case *exec.ExitError:
+			fmt.Println("command exit code:", e.ExitCode())
+		default:
+			panic(err)
+		}
+	}
+
+	grepCmd := exec.Command("grep", "hello")
+
+	grepIn, _ := grepCmd.StdinPipe()
+	grepOut, _ := grepCmd.StdoutPipe()
+	grepCmd.Start()
+	grepIn.Write([]byte("hello world\ngoodbye grep\nI am Jin, hello"))
+	grepIn.Close()
+	grepBytes, _ := io.ReadAll(grepOut)
+	grepCmd.Wait()
+
+	fmt.Println("> grep hello")
+	fmt.Println(string(grepBytes))
+
+	lsCmd := exec.Command("bash", "-c", "ls -a -l -h")
+	lsOut, err := lsCmd.Output()
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println("> ls -a -l -h")
+	fmt.Println(string(lsOut))
+}

testbench/testbench.go

@@ -0,0 +1,9 @@
+package testbench
+
+func IntMin(a, b int) int {
+	if a < b {
+		return a
+	}
+
+	return b
+}

testbench/testbench_test.go

@@ -0,0 +1,46 @@
+package testbench
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestIntMinBasic(t *testing.T) {
+	ans := IntMin(2, -2)
+
+	if ans != -2 {
+		t.Errorf("IntMain(2, -2) = %d, want -2", ans)
+	}
+}
+
+func TestIntMinTableDrive(t *testing.T) {
+	var tests = []struct {
+		a, b int
+		want int
+	}{
+		{0, 1, 0},
+		{1, 0, 0},
+		{2, -2, -2},
+		{0, -1, -1},
+		{-1, 0, -1},
+	}
+
+	for _, tt := range tests {
+		testName := fmt.Sprintf("%d,%d", tt.a, tt.b)
+		t.Run(testName, func(t *testing.T) {
+			ans := IntMin(tt.a, tt.b)
+			if ans != tt.want {
+				t.Errorf("got %d, want %d", ans, tt.want)
+			}
+		})
+	}
+}
+
+func BenchmarkIntMin(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		IntMin(1, 2)
+	}
+}
+
+// go test -v        # to run all tests in current project in verbose mode
+// go test -bench    # to run all benchmarks in current project