1 files changed, 138 insertions, 0 deletions
diff --git a/tests/core/go_library/embedsrcs_error_test.go b/tests/core/go_library/embedsrcs_error_test.go
new file mode 100644
index 00000000..73629ddf
--- /dev/null
+++ b/tests/core/go_library/embedsrcs_error_test.go
@@ -0,0 +1,138 @@
+// Copyright 2021 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package embedsrcs_errors
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/bazelbuild/rules_go/go/tools/bazel_testing"
+)
+
+func TestMain(m *testing.M) {
+	bazel_testing.TestMain(m, bazel_testing.Args{
+		Main: `
+-- BUILD.bazel --
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "invalid",
+    srcs = ["invalid.go"],
+    importpath = "invalid",
+)
+
+go_library(
+    name = "none",
+    srcs = ["none.go"],
+    importpath = "none",
+)
+
+go_library(
+    name = "multi_dir",
+    srcs = [
+        "a.go",
+        "b/b.go",
+    ],
+    embedsrcs = [
+        "a.txt",
+        "b/b.txt",
+    ],
+    importpath = "multi_dir",
+)
+
+go_library(
+    name = "embeds_vcs_dir",
+    srcs = ["c/c.go"],
+    embedsrcs = ["c/.bzr/c.txt"],
+    importpath = "embeds_vcs_dir",
+)
+-- invalid.go --
+package invalid
+
+import _ "embed"
+
+//go:embed ..
+var x string
+-- none.go --
+package none
+
+import _ "embed"
+
+//go:embed none
+var x string
+-- a.go --
+package a
+
+import _ "embed"
+
+//go:embed a.txt
+var x string
+-- a.txt --
+-- b/b.go --
+package a
+
+import _ "embed"
+
+//go:embed b.txt
+var y string
+-- b/b.txt --
+-- c/c.go --
+package a
+
+import _ "embed"
+
+//go:embed .bzr
+var z string
+-- c/.bzr/c.txt --
+`,
+	})
+}
+
+func Test(t *testing.T) {
+	for _, test := range []struct {
+		desc, target, want string
+	}{
+		{
+			desc:   "invalid",
+			target: "//:invalid",
+			want:   "invalid pattern syntax",
+		},
+		{
+			desc:   "none",
+			target: "//:none",
+			want:   "could not embed none: no matching files found",
+		},
+		{
+			desc:   "multi_dir",
+			target: "//:multi_dir",
+			want:   "source files with //go:embed should be in same directory",
+		},
+		{
+			desc:   "embeds_vcs_dir",
+			target: "//:embeds_vcs_dir",
+			want:   "could not embed .bzr: cannot embed directory .bzr: invalid name .bzr",
+		},
+	} {
+		t.Run(test.desc, func(t *testing.T) {
+			err := bazel_testing.RunBazel("build", test.target)
+			if err == nil {
+				t.Fatalf("expected error matching %q", test.want)
+			}
+			if errMsg := err.Error(); !strings.Contains(errMsg, test.want) {
+				t.Fatalf("expected error matching %q; got %v", test.want, errMsg)
+			}
+		})
+	}
+}