feat(test): handle empty args by assuming current directory for gno test

gnovm/cmd/gno/test.go

@@ -146,10 +146,6 @@ func (c *testCfg) RegisterFlags(fs *flag.FlagSet) {
 }
 
 func execTest(cfg *testCfg, args []string, io commands.IO) error {
-	if len(args) < 1 {
-		return flag.ErrHelp
-	}
-
 	// guess opts.RootDir
 	if cfg.rootDir == "" {
 		cfg.rootDir = gnoenv.RootDir()
@@ -159,9 +155,9 @@ func execTest(cfg *testCfg, args []string, io commands.IO) error {
 	if err != nil {
 		return fmt.Errorf("list targets from patterns: %w", err)
 	}
+	// Assume current directory if no paths are provided
 	if len(paths) == 0 {
-		io.ErrPrintln("no packages to test")
-		return nil
+		paths = []string{"."}
 	}
 
 	if cfg.timeout > 0 {

gnovm/cmd/gno/testdata/test/no_args_flag_run.txtar

@@ -0,0 +1,99 @@
+# Run test on gno.land/p/demo/ufmt
+
+gno test
+
+gno test -v
+
+! stdout .+
+stderr '=== RUN   TestRun/hello'
+stderr '=== RUN   TestRun/hi_you'
+stderr '=== RUN   TestRun/hi_me'
+stderr '=== RUN   TestRun'
+stderr '--- PASS: TestRun'
+
+gno test -v -run .*
+
+! stdout .+
+stderr '=== RUN   TestRun/hello'
+stderr '=== RUN   TestRun/hi_you'
+stderr '=== RUN   TestRun/hi_me'
+stderr '=== RUN   TestRun'
+stderr '--- PASS: TestRun'
+
+gno test -v -run NotExists
+
+! stdout .+
+! stderr '=== RUN   TestRun'
+
+gno test -v -run .*/hello
+
+! stdout .+
+stderr '=== RUN   TestRun/hello'
+! stderr '=== RUN   TestRun/hi_you'
+! stderr '=== RUN   TestRun/hi_me'
+stderr '=== RUN   TestRun'
+stderr '--- PASS: TestRun'
+
+gno test -v -run .*/hi
+
+! stdout .+
+! stderr '=== RUN   TestRun/hello'
+stderr '=== RUN   TestRun/hi_you'
+stderr '=== RUN   TestRun/hi_me'
+stderr '=== RUN   TestRun'
+stderr '--- PASS: TestRun'
+
+gno test -v -run .*/NotExists
+
+! stdout .+
+stderr '=== RUN   TestRun'
+stderr '--- PASS: TestRun'
+
+gno test -v -run Run/.*
+
+! stdout .+
+stderr '=== RUN   TestRun/hello'
+stderr '=== RUN   TestRun/hi_you'
+stderr '=== RUN   TestRun/hi_me'
+stderr '=== RUN   TestRun'
+stderr '--- PASS: TestRun'
+
+gno test -v -run Run/
+
+! stdout .+
+stderr '=== RUN   TestRun/hello'
+stderr '=== RUN   TestRun/hi_you'
+stderr '=== RUN   TestRun/hi_me'
+stderr '=== RUN   TestRun'
+stderr '--- PASS: TestRun'
+
+gno test -v -run Run/hello
+
+! stdout .+
+stderr '=== RUN   TestRun/hello'
+! stderr '=== RUN   TestRun/hi_you'
+! stderr '=== RUN   TestRun/hi_me'
+stderr '=== RUN   TestRun'
+stderr '--- PASS: TestRun'
+
+-- run.gno --
+package run
+
+-- run_test.gno --
+package run
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestRun(t *testing.T) {
+	cases := []string {
+		"hello",
+		"hi you",
+		"hi me",
+	}
+	for _, tc := range cases {
+		t.Run(tc, func(t *testing.T) {})
+	}
+}

gnovm/cmd/gno/testdata/test/no_args_output_correct.txtar

@@ -0,0 +1,21 @@
+# Test Output instruction correct without path arguments
+
+gno test -v
+
+stdout 'hey'
+stdout 'hru?'
+stderr '=== RUN   file/x_filetest.gno'
+stderr '--- PASS: file/x_filetest.gno \(\d\.\d\ds\)'
+stderr 'ok      \. 	\d\.\d\ds'
+
+-- x_filetest.gno --
+package main
+
+func main() {
+	println("hey")
+	println("hru?")
+}
+
+// Output:
+// hey
+// hru?

gnovm/cmd/gno/testdata/test/no_args_output_incorrect.txtar

@@ -0,0 +1,24 @@
+# Test Output instruction incorrect without path arguments
+
+# with -v, stdout should contain output (unmodified).
+! gno test -v
+
+stdout 'hey'
+
+stderr '=== RUN   file/x_filetest.gno'
+stderr '--- Expected'
+stderr '\+\+\+ Actual'
+stderr '@@ -1,3 \+1,2 @@'
+stderr 'hey'
+stderr '-hru?'
+
+-- x_filetest.gno --
+package main
+
+func main() {
+	println("hey")
+}
+
+// Output:
+// hey
+// hru?

gnovm/cmd/gno/testdata/test/no_args_unknown_package.txtar

@@ -0,0 +1,24 @@
+# Test for loading an unknown package without path arguments
+
+! gno test -v
+
+! stdout .+
+stderr 'contract.gno:3:8: unknown import path foobarbaz'
+
+-- contract.gno --
+package contract
+
+import "foobarbaz"
+
+func Foo() {
+	_ = foobarbaz.Gnognogno
+}
+
+-- contract_test.gno --
+package contract
+
+import "testing"
+
+func TestFoo(t *testing.T) {
+	Foo()
+}

gnovm/cmd/gno/testdata/test/no_args_valid.txtar

@@ -0,0 +1,18 @@
+# Run valid gno test without args
+
+! gno test
+
+! stdout .+ 
+stderr 'ok      \. 	\d\.\d\ds'
+
+-- valid.gno --
+package valid
+
+-- valid_test.gno --
+package valid
+
+import "testing"
+
+func TestAlwaysValid(t *testing.T) {
+	// noop test
+}