update ci config

.travis.yml

@@ -10,6 +10,7 @@ env:
   global:
   - CODECLIMATE=https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64
   - GO111MODULE=on
+  - GOFLAGS=-mod=vendor
 
 go:
 - master

Makefile

@@ -1,5 +1,5 @@
 SHELL       = /bin/bash -euo pipefail
-PKGS        = go list ./... | grep -v vendor
+PKGS        = $(shell go list ./... | grep -v vendor)
 GO111MODULE = on
 GOFLAGS     = -mod=vendor
 TIMEOUT     = 1s
@@ -23,28 +23,20 @@ format:
 
 .PHONY: generate
 generate:
-	@go generate ./...
+	@go generate $(PKGS)
 
 .PHONY: refresh
 refresh: generate format
 
 
 .PHONY: test
 test:
-	@go test -race -timeout $(TIMEOUT) ./...
+	@go test -race -timeout $(TIMEOUT) $(PKGS)
 
 .PHONY: test-with-coverage
 test-with-coverage:
-	@go test -cover -timeout $(TIMEOUT) ./... | column -t | sort -r
+	@go test -cover -timeout $(TIMEOUT) $(PKGS) | column -t | sort -r
 
 .PHONY: test-with-coverage-profile
 test-with-coverage-profile:
-	@go test -cover -covermode count -coverprofile c.out -timeout $(TIMEOUT) ./...
-
-
-.PHONY: sync
-sync:
-	@git stash && git pull --rebase && git stash pop || true
-
-.PHONY: upgrade
-upgrade: sync update deps refresh test-with-coverage
+	@go test -cover -covermode count -coverprofile c.out -timeout $(TIMEOUT) $(PKGS)

caller.go

@@ -20,8 +20,8 @@ func Caller(skip int) CallerInfo {
 
 // CallerInfo holds information about a caller.
 type CallerInfo struct {
-	Entry uintptr
-	Name  string
-	File  string
-	Line  int
+	Entry uintptr // the entry address of the function
+	Name  string  // the name of the function
+	File  string  // the file name and
+	Line  int     // line number of the source code of the function
 }