Add validation arg to contracts command (#565)

Will allow contract testing to be done in just one command

cmd/command/pr/pr.go

@@ -1,13 +1,15 @@
 package pr
 
 import (
+	"fmt"
 	"io"
 	"os"
 
 	"github.com/pluralsh/plural-cli/pkg/client"
 	"github.com/pluralsh/plural-cli/pkg/common"
 	"github.com/pluralsh/plural-cli/pkg/pr"
 	"github.com/pluralsh/plural-cli/pkg/utils"
+	"github.com/pluralsh/plural-cli/pkg/utils/git"
 	"github.com/samber/lo"
 	"github.com/urfave/cli"
 )
@@ -107,6 +109,10 @@ func (p *Plural) prCommands() []cli.Command {
 					Usage:    "the contract file to run",
 					Required: true,
 				},
+				cli.BoolFlag{
+					Name:  "validate",
+					Usage: "check if there are any local git changes and fail if so",
+				},
 			},
 		},
 	}
@@ -171,6 +177,22 @@ func handlePrContracts(c *cli.Context) error {
 		}
 	}
 
+	if c.Bool("validate") {
+		changes, err := git.Modified()
+		if err != nil {
+			return err
+		}
+
+		if len(changes) > 0 {
+			utils.Highlight("Contracts failed due to local git changes, displaying below ===>\n\n")
+			if err := git.PrintDiff(); err != nil {
+				return err
+			}
+			fmt.Println("")
+			return fmt.Errorf("contract validation failed")
+		}
+	}
+
 	return nil
 }
 

pkg/utils/git/repo.go

@@ -2,6 +2,8 @@ package git
 
 import (
 	"bufio"
+	"os"
+	"os/exec"
 	"strings"
 
 	gogit "github.com/go-git/go-git/v5"
@@ -20,6 +22,13 @@ func Repo() (*gogit.Repository, error) {
 	return gogit.PlainOpen(root)
 }
 
+func PrintDiff() error {
+	cmd := exec.Command("git", "--no-pager", "diff")
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}
+
 func CurrentBranch() (string, error) {
 	return GitRaw("rev-parse", "--abbrev-ref", "HEAD")
 }