2 files changed, 80 insertions, 3 deletions
diff --git a/src/mongo/gotools/mongorestore/options.go b/src/mongo/gotools/mongorestore/options.go
index 93965cc3e2b..0913cf52e21 100644
--- a/src/mongo/gotools/mongorestore/options.go
+++ b/src/mongo/gotools/mongorestore/options.go
@@ -29,9 +29,12 @@ func (*InputOptions) Name() string {
 
 // OutputOptions defines the set of options for restoring dump data.
 type OutputOptions struct {
-	Drop                     bool   `long:"drop" description:"drop each collection before import"`
-	DryRun                   bool   `long:"dryRun" description:"view summary without importing anything. recommended with verbosity"`
-	WriteConcern             string `long:"writeConcern" value-name:"<write-concern>" default:"majority" default-mask:"-" description:"write concern options e.g. --writeConcern majority, --writeConcern '{w: 3, wtimeout: 500, fsync: true, j: true}' (defaults to 'majority')"`
+	Drop   bool `long:"drop" description:"drop each collection before import"`
+	DryRun bool `long:"dryRun" description:"view summary without importing anything. recommended with verbosity"`
+
+	// By default mongorestore uses a write concern of 'majority'.
+	// Cannot be used simultaneously with write concern options in a URI.
+	WriteConcern             string `long:"writeConcern" value-name:"<write-concern>" default-mask:"-" description:"write concern options e.g. --writeConcern majority, --writeConcern '{w: 3, wtimeout: 500, fsync: true, j: true}'"`
 	NoIndexRestore           bool   `long:"noIndexRestore" description:"don't restore indexes"`
 	NoOptionsRestore         bool   `long:"noOptionsRestore" description:"don't restore collection options"`
 	KeepIndexVersion         bool   `long:"keepIndexVersion" description:"don't update index version"`
diff --git a/src/mongo/gotools/mongorestore/options_test.go b/src/mongo/gotools/mongorestore/options_test.go
new file mode 100644
index 00000000000..5513ecf2f02
--- /dev/null
+++ b/src/mongo/gotools/mongorestore/options_test.go
@@ -0,0 +1,74 @@
+package mongorestore
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/mongodb/mongo-tools/common/db"
+	"github.com/mongodb/mongo-tools/common/options"
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+// Regression test for TOOLS-1741
+func TestWriteConcernWithURIParsing(t *testing.T) {
+	Convey("With an IngestOptions and ToolsOptions", t, func() {
+
+		// create an 'EnabledOptions' to determine what options should be able to be
+		// parsed and set form the input.
+		enabled := options.EnabledOptions{URI: true}
+
+		// create a new tools options to hold the parsed options
+		opts := options.New("", "", enabled)
+
+		// create a 'OutputOptions', which holds the value of the write concern
+		// for mongorestore.
+		outputOpts := &OutputOptions{}
+		opts.AddOptions(outputOpts)
+
+		// Specify that a write concern set on the URI is not an error and is a known
+		// possible option.
+		opts.URI.AddKnownURIParameters(options.KnownURIOptionsWriteConcern)
+
+		Convey("Parsing with no value should leave write concern empty", func() {
+			_, err := opts.ParseArgs([]string{})
+			So(err, ShouldBeNil)
+			So(outputOpts.WriteConcern, ShouldEqual, "")
+			Convey("and building write concern object, WMode should be majority", func() {
+				sessionSafety, err := db.BuildWriteConcern(outputOpts.WriteConcern, "",
+					opts.ParsedConnString())
+				So(err, ShouldBeNil)
+				So(sessionSafety.WMode, ShouldEqual, "majority")
+			})
+		})
+
+		Convey("Parsing with no writeconcern in URI should not error", func() {
+			args := []string{
+				"--uri", "mongodb://localhost:27017/test",
+			}
+			_, err := opts.ParseArgs(args)
+			So(err, ShouldBeNil)
+			So(outputOpts.WriteConcern, ShouldEqual, "")
+			Convey("and parsing write concern, WMode should be majority", func() {
+				sessionSafety, err := db.BuildWriteConcern(outputOpts.WriteConcern, "",
+					opts.ParsedConnString())
+				So(err, ShouldBeNil)
+				So(sessionSafety, ShouldNotBeNil)
+				So(sessionSafety.WMode, ShouldEqual, "majority")
+			})
+		})
+		Convey("Parsing with both writeconcern in URI and command line should error", func() {
+			args := []string{
+				"--uri", "mongodb://localhost:27017/test",
+				"--writeConcern", "majority",
+			}
+			_, err := opts.ParseArgs(args)
+			So(err, ShouldBeNil)
+			So(outputOpts.WriteConcern, ShouldEqual, "majority")
+			Convey("and parsing write concern, WMode should be majority", func() {
+				_, err := db.BuildWriteConcern(outputOpts.WriteConcern, "",
+					opts.ParsedConnString())
+				So(err, ShouldResemble, fmt.Errorf("cannot specify writeConcern string and connectionString object"))
+			})
+		})
+	})
+}