test(status): tableOutput show override constraint

Add integration test for tableOutput show override constraints.

cmd/dep/status.go

@@ -96,7 +96,7 @@ func (out *tableOutput) BasicLine(bs *BasicStatus) {
 		constraint = bs.Constraint.String()
 	}
 	if bs.hasOverride {
-		constraint += "(override)"
+		constraint += " (override)"
 	}
 	fmt.Fprintf(out.w,
 		"%s\t%s\t%s\t%s\t%s\t%d\t\n",

cmd/dep/testdata/harness_tests/status/override_constraint/final/Gopkg.toml

@@ -0,0 +1,3 @@
+[[override]]
+  name = "github.com/sdboyer/deptest"
+  version = "=0.8.1"

cmd/dep/testdata/harness_tests/status/override_constraint/initial/Gopkg.toml

@@ -0,0 +1,3 @@
+[[override]]
+  name = "github.com/sdboyer/deptest"
+  version = "=0.8.1"

cmd/dep/testdata/harness_tests/status/override_constraint/initial/main.go

@@ -0,0 +1,12 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	_ "github.com/sdboyer/deptestdos"
+)
+
+func main() {
+}

cmd/dep/testdata/harness_tests/status/override_constraint/stdout.txt

@@ -0,0 +1,3 @@
+PROJECT                        CONSTRAINT    VERSION  REVISION  LATEST   PKGS USED
+github.com/sdboyer/deptest     * (override)  v0.8.1   3f4c3be   ff2948a  1
+github.com/sdboyer/deptestdos  *             v2.0.0   5c60720   5c60720  1

cmd/dep/testdata/harness_tests/status/override_constraint/testcase.json

@@ -0,0 +1,11 @@
+{
+  "commands": [
+    ["ensure"],
+    ["status"]
+  ],
+  "error-expected": "",
+  "vendor-final": [
+    "github.com/sdboyer/deptest",
+    "github.com/sdboyer/deptestdos"
+  ]
+}