From 47182329400e359a7a6ad5857cf1854a4f9ec720 Mon Sep 17 00:00:00 2001
From: Han-Wen Nienhuys <hanwen@google.com>
Date: Fri, 9 Oct 2015 17:56:52 +0000
Subject: [PATCH] Provide an example for the Go rules, eg.

 bazel test examples/go/lib:lib_test
 bazel build examples/go/bin:bin

--
MOS_MIGRATED_REVID=105070940
---
 BUILD                                         |  4 ++++
 WORKSPACE                                     | 11 ++++++++++
 examples/go/bin/BUILD                         | 14 +++++++++++++
 examples/go/bin/bin.go                        | 14 +++++++++++++
 examples/go/lib/BUILD                         | 20 +++++++++++++++++++
 examples/go/lib/lib.go                        |  6 ++++++
 examples/go/lib/lib_test.go                   | 11 ++++++++++
 .../go/vendor/github_com/user/vendored/BUILD  | 12 +++++++++++
 .../github_com/user/vendored/vendored.go      |  6 ++++++
 9 files changed, 98 insertions(+)
 create mode 100644 examples/go/bin/BUILD
 create mode 100644 examples/go/bin/bin.go
 create mode 100644 examples/go/lib/BUILD
 create mode 100644 examples/go/lib/lib.go
 create mode 100644 examples/go/lib/lib_test.go
 create mode 100644 examples/go/vendor/github_com/user/vendored/BUILD
 create mode 100644 examples/go/vendor/github_com/user/vendored/vendored.go

diff --git a/BUILD b/BUILD
index d34269b456e91f..2e1495fca6dfea 100644
--- a/BUILD
+++ b/BUILD
@@ -9,3 +9,7 @@ filegroup(
     name = "dummy",
     visibility = ["//visibility:public"],
 )
+
+load("/tools/build_rules/go/def", "go_prefix")
+
+go_prefix("github.com/bazelbuild/bazel")
diff --git a/WORKSPACE b/WORKSPACE
index fc9cb01d95a496..6c6c8d8bd58e29 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -80,3 +80,14 @@ new_http_archive(
     sha256 = "87494218eea2441a7a24b40f227330877dbba75c5fa9014ac6188711baed53f6",
     build_file = "tools/build_defs/sass/sassc.BUILD",
 )
+
+bind(name  = "go_prefix",
+  actual = "//:go_prefix",
+)
+
+new_http_archive(
+  name=  "golang-linux-amd64",
+  url = "https://storage.googleapis.com/golang/go1.5.1.linux-amd64.tar.gz",
+  build_file = "tools/build_rules/go/toolchain/BUILD.go-toolchain",
+  sha256 = "2593132ca490b9ee17509d65ee2cd078441ff544899f6afb97a03d08c25524e7"
+)
diff --git a/examples/go/bin/BUILD b/examples/go/bin/BUILD
new file mode 100644
index 00000000000000..d6676c401a628d
--- /dev/null
+++ b/examples/go/bin/BUILD
@@ -0,0 +1,14 @@
+package(
+    default_visibility = ["//visibility:public"],
+)
+
+load("/tools/build_rules/go/def", "go_binary")
+
+go_binary(
+    name = "bin",
+    srcs = ["bin.go"],
+    deps = [
+        "//examples/go/lib:go_default_library",
+        "//examples/go/vendor/github_com/user/vendored:go_default_library",
+    ],
+)
diff --git a/examples/go/bin/bin.go b/examples/go/bin/bin.go
new file mode 100644
index 00000000000000..b0c5917145c4b3
--- /dev/null
+++ b/examples/go/bin/bin.go
@@ -0,0 +1,14 @@
+package main
+
+import (
+	"fmt"
+
+	"github_com/user/vendored"
+
+	"github.com/bazelbuild/bazel/examples/go/lib"
+)
+
+func main() {
+	fmt.Println("meaning: ", lib.Meaning())
+	fmt.Println("vendored: ", vendored.Vendored())
+}
diff --git a/examples/go/lib/BUILD b/examples/go/lib/BUILD
new file mode 100644
index 00000000000000..ac982b114591f3
--- /dev/null
+++ b/examples/go/lib/BUILD
@@ -0,0 +1,20 @@
+package(
+    default_visibility = ["//visibility:public"],
+)
+
+load("/tools/build_rules/go/def", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "lib.go",
+    ],
+)
+
+go_test(
+    name = "lib_test",
+    srcs = [
+        "lib_test.go",
+    ],
+    library = ":go_default_library",
+)
diff --git a/examples/go/lib/lib.go b/examples/go/lib/lib.go
new file mode 100644
index 00000000000000..f97e3aefce2c10
--- /dev/null
+++ b/examples/go/lib/lib.go
@@ -0,0 +1,6 @@
+package lib
+
+// Meaning calculates the meaning of Life, the Universe and Everything.
+func Meaning() int {
+	return 42
+}
diff --git a/examples/go/lib/lib_test.go b/examples/go/lib/lib_test.go
new file mode 100644
index 00000000000000..e8a9f1b707cb43
--- /dev/null
+++ b/examples/go/lib/lib_test.go
@@ -0,0 +1,11 @@
+package lib
+
+import (
+	"testing"
+)
+
+func TestMeaning(t *testing.T) {
+	if m := Meaning(); m != 42 {
+		t.Errorf("got %d, want 42", m)
+	}
+}
diff --git a/examples/go/vendor/github_com/user/vendored/BUILD b/examples/go/vendor/github_com/user/vendored/BUILD
new file mode 100644
index 00000000000000..7fa0283e994eec
--- /dev/null
+++ b/examples/go/vendor/github_com/user/vendored/BUILD
@@ -0,0 +1,12 @@
+package(
+    default_visibility = ["//visibility:public"],
+)
+
+load("/tools/build_rules/go/def", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "vendored.go",
+    ],
+)
diff --git a/examples/go/vendor/github_com/user/vendored/vendored.go b/examples/go/vendor/github_com/user/vendored/vendored.go
new file mode 100644
index 00000000000000..1e9ee6e7857202
--- /dev/null
+++ b/examples/go/vendor/github_com/user/vendored/vendored.go
@@ -0,0 +1,6 @@
+package vendored
+
+// Vendored returns a string.
+func Vendored() string {
+	return "I was vendored"
+}