fix appveyor build problem

Author: fstab

.appveyor.yml

@@ -5,10 +5,10 @@ os:
     Windows Server 2012 R2
 
 clone_folder:
-    C:\go\src\github.com\fstab\grok_exporter
+    C:\grok_exporter
 
 environment:
-    PATH: c:\go\bin;C:\msys64\mingw64\bin;%PATH%
+    PATH: C:\go\bin;C:\msys64\mingw64\bin;%PATH%
     GOPATH: c:\go
     CC: x86_64-w64-mingw32-gcc
     CGO_ENABLED: 1
@@ -48,22 +48,13 @@ install:
 # --------------------------------------------------------------------------
 
 build_script:
-    - cd c:\go\src\github.com\fstab\grok_exporter
+    - cd c:\grok_exporter
     - git submodule update --init --recursive
     - set GO111MODULE=on
     - go version
-    - go test github.com/fstab/grok_exporter
-    - go test github.com/fstab/grok_exporter/config
-    - go test github.com/fstab/grok_exporter/config/v1
-    - go test github.com/fstab/grok_exporter/config/v2
-    - go test github.com/fstab/grok_exporter/exporter
-    - go test github.com/fstab/grok_exporter/oniguruma
-    - go test github.com/fstab/grok_exporter/tailer
-    - go test github.com/fstab/grok_exporter/tailer/fswatcher
-    - go test github.com/fstab/grok_exporter/tailer/glob
-    - go test github.com/fstab/grok_exporter/template
-    - go install github.com/fstab/grok_exporter
-    - C:\cygwin\bin\bash -c "cd /cygdrive/c/go/src/github.com/fstab/grok_exporter ; PATH='/usr/sbin:/usr/bin:/sbin:/bin' ./integration-test.sh"
+    - go test ./...
+    - go install
+    - C:\cygwin\bin\bash -c "cd /cygdrive/c/grok_exporter ; PATH='/usr/sbin:/usr/bin:/sbin:/bin' ./integration-test.sh"
 
     # Print the linked DLLs, so we can check that grok_exporter does not have
     # a runtime dependency on Oniguruma.

.travis.yml

@@ -1,7 +1,7 @@
 language: go
 
 go:
-  - "1.12"
+  - "1.13"
 
 os:
   - linux

exporter/patterns_test.go

@@ -18,6 +18,7 @@ import (
 	"github.com/fstab/grok_exporter/oniguruma"
 	"os"
 	"path/filepath"
+	"regexp"
 	"testing"
 )
 
@@ -30,8 +31,14 @@ func loadPatternDir(t *testing.T) *Patterns {
 	if len(*p) != 0 {
 		t.Errorf("Expected initial pattern list to be empty, but got len = %v\n", len(*p))
 	}
-	patternDir := filepath.Join(os.Getenv("GOPATH"), "src", "github.com", "fstab", "grok_exporter", "logstash-patterns-core", "patterns")
-	err := p.AddDir(patternDir)
+	// patternDir := filepath.Join(os.Getenv("GOPATH"), "src", "github.com", "fstab", "grok_exporter", "logstash-patterns-core", "patterns")
+	pwd, err := os.Getwd()
+	if err != nil {
+		t.Fatalf("failed to get the current working directory: %v", err)
+	}
+	pwd = regexp.MustCompile("grok_exporter.*").ReplaceAllString(pwd, "grok_exporter") // if in a subdirectory, go up to the project root
+	patternDir := filepath.Join(pwd, "logstash-patterns-core", "patterns")
+	err = p.AddDir(patternDir)
 	if err != nil {
 		t.Errorf("Unexpected error: %v", err.Error())
 	}

go.mod

@@ -8,3 +8,5 @@ require (
 	github.com/sirupsen/logrus v1.4.2
 	gopkg.in/yaml.v2 v2.2.2
 )
+
+go 1.13