go/libraries/doltcore/env/actions: commit.go: Error when attempting to create a commit with unresolved conflicts still in the working set.

bats/merge.bats

@@ -76,6 +76,48 @@ teardown() {
     [[ "$output" =~ "| 0 " ]] || false
 }
 
+@test "dolt add fails on table with conflict" {
+    dolt checkout -b merge_branch
+    dolt SQL -q "INSERT INTO test1 values (0,1,1)"
+    dolt add test1
+    dolt commit -m "add pk 0 = 1,1 to test1"
+
+    dolt checkout master
+    dolt SQL -q "INSERT INTO test1 values (0,2,2)"
+    dolt add test1
+    dolt commit -m "add pk 0 = 2,2 to test1"
+
+    run dolt merge merge_branch
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "test1" ]] || false
+
+    run dolt add test1
+    [ "$status" -ne 0 ]
+    [[ "$output" =~ "not all tables merged" ]] || false
+    [[ "$output" =~ "test1" ]] || false
+}
+
+@test "dolt commit fails with unmerged tables in working set" {
+    dolt checkout -b merge_branch
+    dolt SQL -q "INSERT INTO test1 values (0,1,1)"
+    dolt add test1
+    dolt commit -m "add pk 0 = 1,1 to test1"
+
+    dolt checkout master
+    dolt SQL -q "INSERT INTO test1 values (0,2,2)"
+    dolt add test1
+    dolt commit -m "add pk 0 = 2,2 to test1"
+
+    run dolt merge merge_branch
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "test1" ]] || false
+
+    run dolt commit -m 'create a merge commit'
+    [ "$status" -ne 0 ]
+    [[ "$output" =~ "unresolved conflicts" ]] || false
+    [[ "$output" =~ "test1" ]] || false
+}
+
 @test "ff merge doesn't stomp working changes" {
     dolt checkout -b merge_branch
     dolt SQL -q "INSERT INTO test1 values (0,1,2)"

go/cmd/dolt/commands/commit.go

@@ -181,6 +181,12 @@ func handleCommitErr(ctx context.Context, dEnv *env.DoltEnv, err error, usage cl
 		}
 	}
 
+	if actions.IsTblInConflict(err) {
+		inConflict := actions.GetTablesForError(err)
+		bdr := errhand.BuildDError(`tables %v have unresolved conflicts from the merge. resolve the conflicts before commiting`, inConflict)
+		return HandleVErrAndExitCode(bdr.Build(), usage)
+	}
+
 	verr := errhand.BuildDError("error: Failed to commit changes.").AddCause(err).Build()
 	return HandleVErrAndExitCode(verr, usage)
 }

go/libraries/doltcore/env/actions/commit.go

@@ -88,6 +88,18 @@ func CommitStaged(ctx context.Context, dEnv *env.DoltEnv, props CommitStagedProp
 
 	var mergeCmSpec []*doltdb.CommitSpec
 	if dEnv.IsMergeActive() {
+		root, err := dEnv.WorkingRoot(ctx)
+		if err != nil {
+			return err
+		}
+		inConflict, err := root.TablesInConflict(ctx)
+		if err != nil {
+			return err
+		}
+		if len(inConflict) > 0 {
+			return NewTblInConflictError(inConflict)
+		}
+
 		spec, err := doltdb.NewCommitSpec(dEnv.RepoState.Merge.Commit)
 
 		if err != nil {