TestMixedMageImports fail on macOS in modules mode (current master) #224

misha-ridge · 2019-01-29T16:15:06Z

Hello.

Running go test ./... on macOS, commit 5dee1ad gives the following:

--- FAIL: TestMixedMageImports (0.17s)
    main_test.go:249: expected to exit with code 0, but got 1, stderr: build command-line-arguments: cannot find module for path _/Users/dottedmag/srcs/mage/mage/testdata/mixed_lib_files/subdir
        Error: error compiling magefiles
    main_test.go:254: expected "Targets:\n  build    \n" but got ""

The text was updated successfully, but these errors were encountered:

natefinch · 2019-02-04T04:12:07Z

Sorry, missed this when it was first filed. It works for me on my mac, but I'm not using modules, that may be the problem.

misha-ridge · 2019-02-04T07:00:10Z

Right, the test passes if I run it from $GOPATH

nlowe · 2019-06-23T19:44:34Z

Note this doesn't seem to be mac specific. This also is causing failures on travis with Go: tip and locally with 1.12:

$ docker run -it --rm -v "$(pwd):/mage" -w /mage golang:1.12 go test -v -run TestMixedMageImports ./mage/...
=== RUN   TestMixedMageImports
--- FAIL: TestMixedMageImports (0.12s)
    main_test.go:249: expected to exit with code 0, but got 1, stderr: build command-line-arguments: cannot find module for path _/mage/mage/testdata/mixed_lib_files/subdir
        Error: error compiling magefiles
    main_test.go:254: expected "Targets:\n  build    \n" but got ""
FAIL
FAIL    github.com/magefile/mage/mage   0.132s

Throwing it in the proper place in $GOPATH seems to fix it:

docker run -it --rm -v "$(pwd):/go/src/github.com/magefile/mage" -w /go/src/github.com/magefile/mage golang:1.12 go test -v -run TestMixedMageImports ./mage/...
=== RUN   TestMixedMageImports
--- PASS: TestMixedMageImports (0.33s)
PASS
ok      github.com/magefile/mage/mage   0.347s

nlowe · 2019-06-23T19:56:09Z

So you can sort of work around this by adding go_import_path to the .travis.yml file, but something seems to have changed from 1.12 in dev that breaks it.

nlowe · 2019-06-23T20:15:22Z

Ah, so the definition of GO111MODULE changed in 1.13 (golang/go#31857). It's treated as if it were set to auto when unset. In 1.13+, this means if go is run in a directory with a go.mod file, or in a subdirectory of a directory that contains a go.mod file, the go modules behavior is enabled.

I was able to work around this with this patch:

diff --git a/.travis.yml b/.travis.yml
index f7e0703..895ed9b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,12 +9,15 @@ branches:
 # library, I'm not going to worry about older versions for now.
 go:
   - tip
+  - 1.12.x
   - 1.11.x
   - 1.10.x
   - 1.9.x
   - 1.8.x
   - 1.7.x
 
+go_import_path: github.com/magefile/mage
+
 # don't call go get ./... because this hides when deps are
 # not packaged into the vendor directory.
 install: true
diff --git a/mage/main_test.go b/mage/main_test.go
index 286557e..0d97535 100644
--- a/mage/main_test.go
+++ b/mage/main_test.go
@@ -236,6 +236,32 @@ func TestListMagefilesLib(t *testing.T) {
 }
 
 func TestMixedMageImports(t *testing.T) {
+	// Go 1.13+ changes how GO111MODULE behaves. In 1.13, it defaults
+	// to `auto`, which enables Go Module functionality if the working
+	// directory contains a `go.mod` file, or is a subdirectory of a
+	// directory that contains a `go.mod file`.
+	//
+	// This test should be fixed to work in modules mode, but for now
+	// we can work around it by forcing `GO111MODULE` to `off` for
+	// this specific test.
+	go111module, set := os.LookupEnv("GO111MODULE")
+
+	if err := os.Setenv("GO111MODULE", "off"); err != nil {
+		t.Fatalf("Failed to disable go modules for flaky test")
+	}
+
+	defer func() {
+		var err error
+		if set {
+			err = os.Setenv("GO111MODULE", go111module)
+		} else {
+			err = os.Unsetenv("GO111MODULE")
+		}
+		if err != nil {
+			t.Fatalf("Failed to reset go module status")
+		}
+	}()
+
 	stderr := &bytes.Buffer{}
 	stdout := &bytes.Buffer{}
 	inv := Invocation{

nlowe · 2019-06-25T01:47:28Z

What's weird is if I force that test to run with Verbose and Debug is it seems to actually find the target in the magefiles:

$ docker run -it --rm -v "$(pwd):/mage" -w /mage golang:1.12 go test -v -run TestMixedMageImports ./mage/...
=== RUN   TestMixedMageImports
DEBUG: 01:43:14.054702 found target Build
DEBUG: 01:43:14.054739 time parse Magefiles: 3.0577ms
--- FAIL: TestMixedMageImports (0.18s)
    main_test.go:278: expected to exit with code 0, but got 1, stderr: build command-line-arguments: cannot find module for path _/mage/mage/testdata/mixed_lib_files/subdir
        Error: error compiling magefiles
    main_test.go:283: expected "Targets:\n  build    \n" but got ""
FAIL
FAIL    github.com/magefile/mage/mage   0.193s

nlowe · 2019-06-25T02:53:48Z

Ooo, progress. I think I have a fix for this. I hacked in some of the extra debugging to get some more verbose output, but that didn't help too much, so you can ignore that.

Changing

mage/mage/testdata/mixed_lib_files/magefile.go

Line 5 in 5bc3a8a

import "./subdir"

to

import "github.com/magefile/mage/mage/testdata/mixed_lib_files/subdir"

works on golang/go master:

C:\Users\Nathan\projects\mage [test/fix-test-failure +0 ~3 -0 !]
λ  docker run -it --rm -v "$(pwd):/mage" -w /mage -e GO111MODULE=auto golang:master go test -v -run TestMixedMageImports ./mage/...
=== RUN   TestMixedMageImports
DEBUG: 02:50:40.833023 getting all non-mage files in ./testdata/mixed_lib_files
DEBUG: 02:50:40.848897 found non-mage files lib.go
DEBUG: 02:50:40.848913 marked file as non-mage: "lib.go"
DEBUG: 02:50:40.848915 getting all files plus mage files
DEBUG: 02:50:40.866672 time to scan for Magefiles: 33.6508ms
DEBUG: 02:50:40.866707 found magefiles: testdata/mixed_lib_files/mage_helpers.go, testdata/mixed_lib_files/magefile.go
DEBUG: 02:50:40.871552 output exe is  /tmp/065651766/c92da59d59823ebbd68ab563dbfaf0afe36ab312
DEBUG: 02:50:40.875778 build cache exists, will ignore any compiled binary
DEBUG: 02:50:40.875806 parsing files
DEBUG: 02:50:40.878311 found target Build
DEBUG: 02:50:40.878351 time parse Magefiles: 2.5399ms
DEBUG: 02:50:40.878358 Creating mainfile at testdata/mixed_lib_files/mage_output_file.go
DEBUG: 02:50:40.879989 writing new file at testdata/mixed_lib_files/mage_output_file.go
About to compile [testdata/mixed_lib_files/mage_helpers.go testdata/mixed_lib_files/magefile.go testdata/mixed_lib_files/mage_output_file.go]
DEBUG: 02:50:40.882821 compiling to /tmp/065651766/c92da59d59823ebbd68ab563dbfaf0afe36ab312
DEBUG: 02:50:40.882824 compiling using gocmd: go
DEBUG: 02:50:40.889598 running go build -o /tmp/065651766/c92da59d59823ebbd68ab563dbfaf0afe36ab312 mage_helpers.go magefile.go mage_output_file.go
DEBUG: 02:50:41.195399 time to compile Magefile: 305.7445ms
Running compiled binary
DEBUG: 02:50:41.196286 running binary /tmp/065651766/c92da59d59823ebbd68ab563dbfaf0afe36ab312
DEBUG: 02:50:41.196298 running magefile with mage vars:
MAGEFILE_CACHE=/tmp/065651766
MAGEFILE_VERBOSE=1
MAGEFILE_LIST=1
MAGEFILE_DEBUG=1
MAGEFILE_GOCMD=go
--- PASS: TestMixedMageImports (0.37s)
PASS
ok      github.com/magefile/mage/mage   0.379s
C:\Users\Nathan\projects\mage [test/fix-test-failure +0 ~4 -0 !]
λ  docker run -it --rm -v "$(pwd):/go/src/github.com/magefile/mage" -w /go/src/github.com/magefile/mage -e GO111MODULE=auto golang:master go test -v -run TestMixedMageImports ./mage/...
=== RUN   TestMixedMageImports
DEBUG: 02:50:47.814008 getting all non-mage files in ./testdata/mixed_lib_files
DEBUG: 02:50:47.830877 found non-mage files lib.go
DEBUG: 02:50:47.830911 marked file as non-mage: "lib.go"
DEBUG: 02:50:47.830914 getting all files plus mage files
DEBUG: 02:50:47.848404 time to scan for Magefiles: 34.3905ms
DEBUG: 02:50:47.848452 found magefiles: testdata/mixed_lib_files/mage_helpers.go, testdata/mixed_lib_files/magefile.go
DEBUG: 02:50:47.854094 output exe is  /tmp/583154524/c92da59d59823ebbd68ab563dbfaf0afe36ab312
DEBUG: 02:50:47.859194 build cache exists, will ignore any compiled binary
DEBUG: 02:50:47.859222 parsing files
DEBUG: 02:50:47.862175 found target Build
DEBUG: 02:50:47.862216 time parse Magefiles: 2.9874ms
DEBUG: 02:50:47.862223 Creating mainfile at testdata/mixed_lib_files/mage_output_file.go
DEBUG: 02:50:47.863877 writing new file at testdata/mixed_lib_files/mage_output_file.go
About to compile [testdata/mixed_lib_files/mage_helpers.go testdata/mixed_lib_files/magefile.go testdata/mixed_lib_files/mage_output_file.go]
DEBUG: 02:50:47.866445 compiling to /tmp/583154524/c92da59d59823ebbd68ab563dbfaf0afe36ab312
DEBUG: 02:50:47.866449 compiling using gocmd: go
DEBUG: 02:50:47.872456 running go build -o /tmp/583154524/c92da59d59823ebbd68ab563dbfaf0afe36ab312 mage_helpers.go magefile.go mage_output_file.go
DEBUG: 02:50:48.175216 time to compile Magefile: 302.7146ms
Running compiled binary
DEBUG: 02:50:48.176137 running binary /tmp/583154524/c92da59d59823ebbd68ab563dbfaf0afe36ab312
DEBUG: 02:50:48.176154 running magefile with mage vars:
MAGEFILE_CACHE=/tmp/583154524
MAGEFILE_VERBOSE=1
MAGEFILE_LIST=1
MAGEFILE_DEBUG=1
MAGEFILE_GOCMD=go
--- PASS: TestMixedMageImports (0.36s)
PASS
ok      github.com/magefile/mage/mage   0.376s

I think this is just due to go not liking relative imports, regardless of where the code is in the gopath.

nlowe · 2019-06-25T02:58:42Z

Yeah, I tested this on all versions tested by Travis and it works for all of them:

Test Results

C:\Users\Nathan\projects\mage [master ≡ +0 ~2 -0 !]
λ  @(@(7..12) | ForEach-Object { "1.$_" }) + "master" | foreach-object { "Testing golang $_"; docker run -it --rm -v "$(pwd):/go/src/github.com/magefile/mage" -w /go/src/github.com/magefile/mage "golang:$_" go test -v -run TestMixedMageImports ./mage/... }
Testing golang 1.7
=== RUN   TestMixedMageImports
--- PASS: TestMixedMageImports (0.41s)
PASS
ok      github.com/magefile/mage/mage   0.424s
Testing golang 1.8
=== RUN   TestMixedMageImports
--- PASS: TestMixedMageImports (0.36s)
PASS
ok      github.com/magefile/mage/mage   0.377s
Testing golang 1.9
=== RUN   TestMixedMageImports
--- PASS: TestMixedMageImports (0.36s)
PASS
ok      github.com/magefile/mage/mage   0.377s
Testing golang 1.10
=== RUN   TestMixedMageImports
--- PASS: TestMixedMageImports (0.30s)
PASS
ok      github.com/magefile/mage/mage   0.312s
Testing golang 1.11
=== RUN   TestMixedMageImports
--- PASS: TestMixedMageImports (0.33s)
PASS
ok      github.com/magefile/mage/mage   0.346s
Testing golang 1.12
=== RUN   TestMixedMageImports
--- PASS: TestMixedMageImports (0.36s)
PASS
ok      github.com/magefile/mage/mage   0.375s
Testing golang master
=== RUN   TestMixedMageImports
--- PASS: TestMixedMageImports (0.35s)
PASS
ok      github.com/magefile/mage/mage   0.365s

Now, the question is, is the test incorrect (in which case, apply the import patch), or should mage be more aggressive about GO111MODULE for specific versions of Go? I can probably submit a PR for either option.

nlowe · 2019-06-25T04:10:37Z

Althought, to be fair, I have no idea why

mage/mage/testdata/transitiveDeps/magefile.go

Line 5 in 5bc3a8a

import "./dep"

doesn't break

mage/mage/main_test.go

Lines 63 to 109 in 5bc3a8a

    
           func TestTransitiveDepCache(t *testing.T) { 
        
           	cache, err := internal.OutputDebug("go", "env", "gocache") 
        
           	if err != nil { 
        
           		t.Fatal(err) 
        
           	} 
        
           	if cache == "" { 
        
           		t.Skip("skipping gocache tests on go version without cache") 
        
           	} 
        
           	// Test that if we change a transitive dep, that we recompile 
        
           	stdout := &bytes.Buffer{} 
        
           	stderr := &bytes.Buffer{} 
        
           	inv := Invocation{ 
        
           		Stderr: stderr, 
        
           		Stdout: stdout, 
        
           		Dir:    "testdata/transitiveDeps", 
        
           		Args:   []string{"Run"}, 
        
           	} 
        
           	code := Invoke(inv) 
        
           	if code != 0 { 
        
           		t.Fatalf("got code %v, err: %s", code, stderr) 
        
           	} 
        
           	expected := "woof\n" 
        
           	if actual := stdout.String(); actual != expected { 
        
           		t.Fatalf("expected %q but got %q", expected, actual) 
        
           	} 
        
           	// ok, so baseline, the generated and cached binary should do "woof" 
        
           	// now change out the transitive dependency that does the output 
        
           	// so that it produces different output. 
        
           	if err := os.Rename("testdata/transitiveDeps/dep/dog.go", "testdata/transitiveDeps/dep/dog.notgo"); err != nil { 
        
           		t.Fatal(err) 
        
           	} 
        
           	defer os.Rename("testdata/transitiveDeps/dep/dog.notgo", "testdata/transitiveDeps/dep/dog.go") 
        
           	if err := os.Rename("testdata/transitiveDeps/dep/cat.notgo", "testdata/transitiveDeps/dep/cat.go"); err != nil { 
        
           		t.Fatal(err) 
        
           	} 
        
           	defer os.Rename("testdata/transitiveDeps/dep/cat.go", "testdata/transitiveDeps/dep/cat.notgo") 
        
           	stderr.Reset() 
        
           	stdout.Reset() 
        
           	code = Invoke(inv) 
        
           	if code != 0 { 
        
           		t.Fatalf("got code %v, err: %s", code, stderr) 
        
           	} 
        
           	expected = "meow\n" 
        
           	if actual := stdout.String(); actual != expected { 
        
           		t.Fatalf("expected %q but got %q", expected, actual) 
        
           	} 
        
           }

nlowe · 2019-06-25T04:15:16Z

Oh, it does. The gocache variable is case-sensitive:

diff --git a/mage/main_test.go b/mage/main_test.go
index 286557e..4110c34 100644
--- a/mage/main_test.go
+++ b/mage/main_test.go
@@ -61,7 +61,7 @@ func testmain(m *testing.M) int {
 }

 func TestTransitiveDepCache(t *testing.T) {
-       cache, err := internal.OutputDebug("go", "env", "gocache")
+       cache, err := internal.OutputDebug("go", "env", "GOCACHE")
        if err != nil {
                t.Fatal(err)
        }

λ  @(@(7..12) | ForEach-Object { "1.$_" }) + "master" | foreach-object { "Testing golang $_"; docker run -it --rm -v "$(pwd):/go/src/github.com/magefile/mage" -w /go/src/github.com/magefile/mage "golang:$_" go test -v -run TestTransitiveDepCache ./mage/... }
Testing golang 1.7
=== RUN   TestTransitiveDepCache
--- SKIP: TestTransitiveDepCache (0.07s)
        main_test.go:69: skipping gocache tests on go version without cache
PASS
ok      github.com/magefile/mage/mage   0.080s
Testing golang 1.8
=== RUN   TestTransitiveDepCache
--- SKIP: TestTransitiveDepCache (0.04s)
        main_test.go:69: skipping gocache tests on go version without cache
PASS
ok      github.com/magefile/mage/mage   0.058s
Testing golang 1.9
=== RUN   TestTransitiveDepCache
--- SKIP: TestTransitiveDepCache (0.03s)
        main_test.go:69: skipping gocache tests on go version without cache
PASS
ok      github.com/magefile/mage/mage   0.046s
Testing golang 1.10
=== RUN   TestTransitiveDepCache
--- PASS: TestTransitiveDepCache (0.62s)
PASS
ok      github.com/magefile/mage/mage   0.639s
Testing golang 1.11
=== RUN   TestTransitiveDepCache
--- PASS: TestTransitiveDepCache (0.70s)
PASS
ok      github.com/magefile/mage/mage   0.710s
Testing golang 1.12
=== RUN   TestTransitiveDepCache
--- PASS: TestTransitiveDepCache (0.72s)
PASS
ok      github.com/magefile/mage/mage   0.732s
Testing golang master
=== RUN   TestTransitiveDepCache
--- FAIL: TestTransitiveDepCache (0.05s)
    main_test.go:82: got code 1, err: Error determining list of magefiles: failed to list mage gofiles: exit status 1
FAIL
FAIL    github.com/magefile/mage/mage   0.063s
FAIL

Making that import absolute instead of relative also fixes that test (after fixing the casing of gocache). It's the only other instance I see of relative imports in the test files.

natefinch · 2019-08-22T01:33:22Z

Ok, so this should be fixed with current master of mage. They dropped support for relative imports with modules. That .... seems like a go1 incompatibility, but I'm not the boss of them, so 🤷‍♂️

misha-ridge · 2019-08-22T01:37:19Z

Great, thanks.

To be fair, their spec says "To avoid ambiguity, Go programs cannot use relative import paths within a work space", and with modules every directory is "within a work space".

misha-ridge changed the title ~~TestMixedMageImports fail on macOS (current master)~~ TestMixedMageImports fail on macOS in modules mode (current master) Feb 4, 2019

natefinch added the 🐜 bug label Apr 10, 2019

nlowe mentioned this issue Jun 23, 2019

New Flag: -nodeps: skip target dependencies when executing target #251

Closed

nlowe mentioned this issue Jun 25, 2019

TestTransitiveDepCache is always skipped and fails on Go 1.13+ #252

Closed

natefinch closed this as completed Aug 22, 2019

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TestMixedMageImports fail on macOS in modules mode (current master) #224

TestMixedMageImports fail on macOS in modules mode (current master) #224

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TestMixedMageImports fail on macOS in modules mode (current master) #224

TestMixedMageImports fail on macOS in modules mode (current master) #224

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