Vendor dependencies with dep

vendor/github.com/pkg/errors/stack_test.go

@@ -0,0 +1,292 @@
+package errors
+
+import (
+	"fmt"
+	"runtime"
+	"testing"
+)
+
+var initpc, _, _, _ = runtime.Caller(0)
+
+func TestFrameLine(t *testing.T) {
+	var tests = []struct {
+		Frame
+		want int
+	}{{
+		Frame(initpc),
+		9,
+	}, {
+		func() Frame {
+			var pc, _, _, _ = runtime.Caller(0)
+			return Frame(pc)
+		}(),
+		20,
+	}, {
+		func() Frame {
+			var pc, _, _, _ = runtime.Caller(1)
+			return Frame(pc)
+		}(),
+		28,
+	}, {
+		Frame(0), // invalid PC
+		0,
+	}}
+
+	for _, tt := range tests {
+		got := tt.Frame.line()
+		want := tt.want
+		if want != got {
+			t.Errorf("Frame(%v): want: %v, got: %v", uintptr(tt.Frame), want, got)
+		}
+	}
+}
+
+type X struct{}
+
+func (x X) val() Frame {
+	var pc, _, _, _ = runtime.Caller(0)
+	return Frame(pc)
+}
+
+func (x *X) ptr() Frame {
+	var pc, _, _, _ = runtime.Caller(0)
+	return Frame(pc)
+}
+
+func TestFrameFormat(t *testing.T) {
+	var tests = []struct {
+		Frame
+		format string
+		want   string
+	}{{
+		Frame(initpc),
+		"%s",
+		"stack_test.go",
+	}, {
+		Frame(initpc),
+		"%+s",
+		"github.com/pkg/errors.init\n" +
+			"\t.+/github.com/pkg/errors/stack_test.go",
+	}, {
+		Frame(0),
+		"%s",
+		"unknown",
+	}, {
+		Frame(0),
+		"%+s",
+		"unknown",
+	}, {
+		Frame(initpc),
+		"%d",
+		"9",
+	}, {
+		Frame(0),
+		"%d",
+		"0",
+	}, {
+		Frame(initpc),
+		"%n",
+		"init",
+	}, {
+		func() Frame {
+			var x X
+			return x.ptr()
+		}(),
+		"%n",
+		`\(\*X\).ptr`,
+	}, {
+		func() Frame {
+			var x X
+			return x.val()
+		}(),
+		"%n",
+		"X.val",
+	}, {
+		Frame(0),
+		"%n",
+		"",
+	}, {
+		Frame(initpc),
+		"%v",
+		"stack_test.go:9",
+	}, {
+		Frame(initpc),
+		"%+v",
+		"github.com/pkg/errors.init\n" +
+			"\t.+/github.com/pkg/errors/stack_test.go:9",
+	}, {
+		Frame(0),
+		"%v",
+		"unknown:0",
+	}}
+
+	for i, tt := range tests {
+		testFormatRegexp(t, i, tt.Frame, tt.format, tt.want)
+	}
+}
+
+func TestFuncname(t *testing.T) {
+	tests := []struct {
+		name, want string
+	}{
+		{"", ""},
+		{"runtime.main", "main"},
+		{"github.com/pkg/errors.funcname", "funcname"},
+		{"funcname", "funcname"},
+		{"io.copyBuffer", "copyBuffer"},
+		{"main.(*R).Write", "(*R).Write"},
+	}
+
+	for _, tt := range tests {
+		got := funcname(tt.name)
+		want := tt.want
+		if got != want {
+			t.Errorf("funcname(%q): want: %q, got %q", tt.name, want, got)
+		}
+	}
+}
+
+func TestTrimGOPATH(t *testing.T) {
+	var tests = []struct {
+		Frame
+		want string
+	}{{
+		Frame(initpc),
+		"github.com/pkg/errors/stack_test.go",
+	}}
+
+	for i, tt := range tests {
+		pc := tt.Frame.pc()
+		fn := runtime.FuncForPC(pc)
+		file, _ := fn.FileLine(pc)
+		got := trimGOPATH(fn.Name(), file)
+		testFormatRegexp(t, i, got, "%s", tt.want)
+	}
+}
+
+func TestStackTrace(t *testing.T) {
+	tests := []struct {
+		err  error
+		want []string
+	}{{
+		New("ooh"), []string{
+			"github.com/pkg/errors.TestStackTrace\n" +
+				"\t.+/github.com/pkg/errors/stack_test.go:172",
+		},
+	}, {
+		Wrap(New("ooh"), "ahh"), []string{
+			"github.com/pkg/errors.TestStackTrace\n" +
+				"\t.+/github.com/pkg/errors/stack_test.go:177", // this is the stack of Wrap, not New
+		},
+	}, {
+		Cause(Wrap(New("ooh"), "ahh")), []string{
+			"github.com/pkg/errors.TestStackTrace\n" +
+				"\t.+/github.com/pkg/errors/stack_test.go:182", // this is the stack of New
+		},
+	}, {
+		func() error { return New("ooh") }(), []string{
+			`github.com/pkg/errors.(func·009|TestStackTrace.func1)` +
+				"\n\t.+/github.com/pkg/errors/stack_test.go:187", // this is the stack of New
+			"github.com/pkg/errors.TestStackTrace\n" +
+				"\t.+/github.com/pkg/errors/stack_test.go:187", // this is the stack of New's caller
+		},
+	}, {
+		Cause(func() error {
+			return func() error {
+				return Errorf("hello %s", fmt.Sprintf("world"))
+			}()
+		}()), []string{
+			`github.com/pkg/errors.(func·010|TestStackTrace.func2.1)` +
+				"\n\t.+/github.com/pkg/errors/stack_test.go:196", // this is the stack of Errorf
+			`github.com/pkg/errors.(func·011|TestStackTrace.func2)` +
+				"\n\t.+/github.com/pkg/errors/stack_test.go:197", // this is the stack of Errorf's caller
+			"github.com/pkg/errors.TestStackTrace\n" +
+				"\t.+/github.com/pkg/errors/stack_test.go:198", // this is the stack of Errorf's caller's caller
+		},
+	}}
+	for i, tt := range tests {
+		x, ok := tt.err.(interface {
+			StackTrace() StackTrace
+		})
+		if !ok {
+			t.Errorf("expected %#v to implement StackTrace() StackTrace", tt.err)
+			continue
+		}
+		st := x.StackTrace()
+		for j, want := range tt.want {
+			testFormatRegexp(t, i, st[j], "%+v", want)
+		}
+	}
+}
+
+func stackTrace() StackTrace {
+	const depth = 8
+	var pcs [depth]uintptr
+	n := runtime.Callers(1, pcs[:])
+	var st stack = pcs[0:n]
+	return st.StackTrace()
+}
+
+func TestStackTraceFormat(t *testing.T) {
+	tests := []struct {
+		StackTrace
+		format string
+		want   string
+	}{{
+		nil,
+		"%s",
+		`\[\]`,
+	}, {
+		nil,
+		"%v",
+		`\[\]`,
+	}, {
+		nil,
+		"%+v",
+		"",
+	}, {
+		nil,
+		"%#v",
+		`\[\]errors.Frame\(nil\)`,
+	}, {
+		make(StackTrace, 0),
+		"%s",
+		`\[\]`,
+	}, {
+		make(StackTrace, 0),
+		"%v",
+		`\[\]`,
+	}, {
+		make(StackTrace, 0),
+		"%+v",
+		"",
+	}, {
+		make(StackTrace, 0),
+		"%#v",
+		`\[\]errors.Frame{}`,
+	}, {
+		stackTrace()[:2],
+		"%s",
+		`\[stack_test.go stack_test.go\]`,
+	}, {
+		stackTrace()[:2],
+		"%v",
+		`\[stack_test.go:225 stack_test.go:272\]`,
+	}, {
+		stackTrace()[:2],
+		"%+v",
+		"\n" +
+			"github.com/pkg/errors.stackTrace\n" +
+			"\t.+/github.com/pkg/errors/stack_test.go:225\n" +
+			"github.com/pkg/errors.TestStackTraceFormat\n" +
+			"\t.+/github.com/pkg/errors/stack_test.go:276",
+	}, {
+		stackTrace()[:2],
+		"%#v",
+		`\[\]errors.Frame{stack_test.go:225, stack_test.go:284}`,
+	}}
+
+	for i, tt := range tests {
+		testFormatRegexp(t, i, tt.StackTrace, tt.format, tt.want)
+	}
+}