[short] skip

# Install an echo command because Windows doesn't have it.
env GOBIN=$WORK/tmp/bin
go install echo.go
env PATH=$GOBIN${:}$PATH

# Test go generate for directory with no go files
! go generate ./nogo
! stdout 'Fail'
stderr 'no Go files'

# Test go  generate for module which doesn't exist should fail
! go generate foo.bar/nothing
stderr 'no required module provides package foo.bar/nothing'

# Test go generate for package where all .go files are excluded by build
# constraints
go generate -v ./excluded
! stdout 'Fail'
! stderr 'go' # -v shouldn't list any files

# Test go generate for "package" with no package clause in any file
go generate ./nopkg
stdout 'Success a'
! stdout 'Fail'

# Test go generate for package with inconsistent package clauses
# $GOPACKAGE should depend on each file's package clause
go generate ./inconsistent
stdout 'Success a'
stdout 'Success b'
stdout -count=2 'Success c'
! stdout 'Fail'

# Test go generate for syntax errors before and after package clauses
go generate ./syntax
stdout 'Success a'
stdout 'Success b'
! stdout 'Fail'

# Test go generate for files importing non-existent packages
go generate ./importerr
stdout 'Success a'
stdout 'Success b'
stdout 'Success c'

-- echo.go --
package main

import (
	"fmt"
	"os"
	"strings"
)

func main() {
	fmt.Println(strings.Join(os.Args[1:], " "))
	fmt.Println()
}

-- go.mod --
module m

go 1.16
-- nogo/foo.txt --
Text file in a directory without go files.
Go generate should ignore this directory.
//go:generate echo Fail nogo

-- excluded/a.go --
// Include a build tag that go generate should exclude.
// Go generate should ignore this file.

// +build a

//go:generate echo Fail a

package excluded

-- excluded/b.go --
// Include a build tag that go generate should exclude.
// Go generate should ignore this file.

//go:generate echo Fail b

// +build b

package excluded


-- nopkg/a.go --
// Go file with package clause after comment.
// Go generate should process this file.

/* Pre-comment */ package nopkg
//go:generate echo Success a

-- nopkg/b.go --
// Go file with commented package clause.
// Go generate should ignore this file.

//package nopkg

//go:generate echo Fail b

-- nopkg/c.go --
// Go file with package clause inside multiline comment.
// Go generate should ignore this file.

/*
package nopkg
*/

//go:generate echo Fail c

-- nopkg/d.go --
// Go file with package clause inside raw string literal.
// Go generate should ignore this file.

const foo = `
package nopkg
`
//go:generate echo Fail d

-- nopkg/e.go --
// Go file without package clause.
// Go generate should ignore this file.

//go:generate echo Fail e

-- inconsistent/a.go --
// Valid go file with inconsistent package name.
// Go generate should process this file with GOPACKAGE=a

package a
//go:generate echo Success $GOPACKAGE

-- inconsistent/b.go --
// Valid go file with inconsistent package name.
// Go generate should process this file with GOPACKAGE=b

//go:generate echo Success $GOPACKAGE
package b

-- inconsistent/c.go --
// Go file with two package clauses.
// Go generate should process this file with GOPACKAGE=c

//go:generate echo Success $GOPACKAGE
package c
// Invalid package clause, should be ignored:
package cinvalid
//go:generate echo Success $GOPACKAGE

-- inconsistent/d.go --
// Go file with invalid package name.
// Go generate should ignore this file.

package +d+
//go:generate echo Fail $GOPACKAGE

-- syntax/a.go --
// Go file with syntax error after package clause.
// Go generate should process this file.

package syntax
123
//go:generate echo Success a

-- syntax/b.go --
// Go file with syntax error after package clause.
// Go generate should process this file.

package syntax; 123
//go:generate echo Success b

-- syntax/c.go --
// Go file with syntax error before package clause.
// Go generate should ignore this file.

foo
package syntax
//go:generate echo Fail c

-- importerr/a.go --
// Go file which imports non-existing package.
// Go generate should process this file.

package importerr
//go:generate echo Success a
import "foo"

-- importerr/b.go --
// Go file which imports non-existing package.
// Go generate should process this file.

//go:generate echo Success b
package importerr
import "bar"

-- importerr/c.go --
// Go file which imports non-existing package.
// Go generate should process this file.

package importerr
import "moo"
//go:generate echo Success c