[FAB-7412] Return error when cc src dir is empty

The peer CLI should return an error if there
are no source files in src path when running
the install and/or package commands.

This fixes the issue for the Java and Node
platforms and adds a test for the Golang
platform (which already handled the error).

Change-Id: Iaf732308f9f377e0e701ecac03980adeb8fea611
Signed-off-by: Gari Singh <gari.r.singh@gmail.com>

Author: mastersingh24

core/chaincode/platforms/golang/platform_go19_test.go

@@ -1,4 +1,4 @@
-// +build !go1.9
+// +build go1.9
 
 /*
 Copyright IBM Corp. All Rights Reserved.
@@ -14,6 +14,7 @@ import (
 	"compress/gzip"
 	"fmt"
 	"os"
+	"path/filepath"
 	"strings"
 	"testing"
 	"time"
@@ -100,18 +101,15 @@ func TestValidateCDS(t *testing.T) {
 }
 
 func TestPlatform_GoPathNotSet(t *testing.T) {
-	p := &Platform{}
-	spec := &pb.ChaincodeSpec{
-		ChaincodeId: &pb.ChaincodeID{
-			Path: "/opt/gopath/src/github.com/hyperledger/fabric",
-		},
-	}
 	gopath := os.Getenv("GOPATH")
 	defer os.Setenv("GOPATH", gopath)
 	os.Setenv("GOPATH", "")
 
-	err := p.ValidateSpec(spec)
-	assert.Contains(t, err.Error(), "invalid GOPATH environment variable value")
+	// Go 1.9 sets GOPATH to $HOME/go if GOPATH is not set
+	defaultGopath := filepath.Join(os.Getenv("HOME"), "go")
+	currentGopath, err := getGopath()
+	assert.NoError(t, err, "Expected default GOPATH")
+	assert.Equal(t, defaultGopath, currentGopath)
 }
 
 func Test_findSource(t *testing.T) {
@@ -225,6 +223,10 @@ func TestValidateSpec(t *testing.T) {
 }
 
 func TestGetDeploymentPayload(t *testing.T) {
+	emptyDir := fmt.Sprintf("pkg%d", os.Getpid())
+	os.Mkdir(emptyDir, os.ModePerm)
+	defer os.Remove(emptyDir)
+
 	platform := &Platform{}
 
 	var tests = []struct {
@@ -234,16 +236,30 @@ func TestGetDeploymentPayload(t *testing.T) {
 		{spec: &pb.ChaincodeSpec{ChaincodeId: &pb.ChaincodeID{Name: "Test Chaincode", Path: "github.com/hyperledger/fabric/examples/chaincode/go/map"}}, succ: true},
 		{spec: &pb.ChaincodeSpec{ChaincodeId: &pb.ChaincodeID{Name: "Test Chaincode", Path: "github.com/hyperledger/fabric/examples/bad/go/map"}}, succ: false},
 		{spec: &pb.ChaincodeSpec{ChaincodeId: &pb.ChaincodeID{Name: "Test Chaincode", Path: "github.com/hyperledger/fabric/test/chaincodes/BadImport"}}, succ: false},
+		{spec: &pb.ChaincodeSpec{ChaincodeId: &pb.ChaincodeID{Name: "Test Chaincode", Path: "github.com/hyperledger/fabric/core/chaincode/platforms/golang/" + emptyDir}}, succ: false},
 	}
 
 	for _, tst := range tests {
 		_, err := platform.GetDeploymentPayload(tst.spec)
+		t.Log(err)
 		if err = testerr(err, tst.succ); err != nil {
 			t.Errorf("Error validating chaincode spec: %s, %s", tst.spec.ChaincodeId.Path, err)
 		}
 	}
 }
 
+//TestGetLDFlagsOpts tests handling of chaincode.golang.dynamicLink
+func TestGetLDFlagsOpts(t *testing.T) {
+	viper.Set("chaincode.golang.dynamicLink", true)
+	if getLDFlagsOpts() != dynamicLDFlagsOpts {
+		t.Error("Error handling chaincode.golang.dynamicLink configuration. ldflags should be for dynamic linkink")
+	}
+	viper.Set("chaincode.golang.dynamicLink", false)
+	if getLDFlagsOpts() != staticLDFlagsOpts {
+		t.Error("Error handling chaincode.golang.dynamicLink configuration. ldflags should be for static linkink")
+	}
+}
+
 //TestGenerateDockerBuild goes through the functions needed to do docker build
 func TestGenerateDockerBuild(t *testing.T) {
 	platform := &Platform{}