tests: fix input tests with expect, not covering false negatives (#19518)

.github/workflows/linux_ci.yml

@@ -99,13 +99,9 @@ jobs:
           ./v3 version
           ./v3 -o tetris  -usecache examples/tetris/tetris.v
       - name: Test password input
-        run: |
-          ./v examples/password
-          ./v examples/password/password_ci.vsh
+        run: ./v test examples/password/
       - name: Test readline
-        run: |
-          ./v examples/readline/readline_ci.v
-          ./v examples/readline/readline.vsh
+        run: ./v test examples/readline/
 
   ubuntu-tcc-boehm-gc:
     runs-on: ubuntu-20.04

.github/workflows/macos_ci.yml

@@ -113,10 +113,6 @@ jobs:
         run: |
           ./v -o v2 -parallel-cc cmd/v
       - name: Test password input
-        run: |
-          ./v examples/password
-          ./v examples/password/password_ci.vsh
+        run: ./v test examples/password/
       - name: Test readline
-        run: |
-          ./v examples/readline/readline_ci.v
-          ./v examples/readline/readline.vsh
+        run: ./v test examples/readline/

examples/password/correct.expect

@@ -1,8 +0,0 @@
-#!/usr/bin/expect
-spawn ./password
-expect "Enter your password : "
-send "Sample\r"
-expect "Confirm password : "
-send "Sample\r"
-expect "Password confirmed! You entered: Sample ."
-expect eof

examples/password/incorrect.expect

@@ -1,8 +0,0 @@
-#!/usr/bin/expect
-spawn ./password
-expect "Enter your password : "
-send "Sample123\r"
-expect "Confirm password : "
-send "Sample234\r"
-expect "Passwords do not match ."
-expect eof

examples/password/password_ci.vsh

@@ -1,3 +0,0 @@
-chdir('examples/password')!
-assert execute('./correct.expect').exit_code == 0
-assert execute('./incorrect.expect').exit_code == 0

examples/password/password_test.v

@@ -0,0 +1,27 @@
+import os
+
+const (
+	// Expect has to be installed for the test.
+	expect_exe = os.find_abs_path_of_executable('expect') or {
+		eprintln('skipping test, since expect is missing')
+		exit(0)
+	}
+	// Directory that contains the Expect scripts used in the test.
+	expect_tests_path = os.join_path(@VMODROOT, 'examples', 'password', 'tests')
+)
+
+fn test_password_input() {
+	correct := os.execute(os.join_path(expect_tests_path, 'correct.expect'))
+	assert correct.exit_code == 0, correct.output
+
+	incorrect := os.execute(os.join_path(expect_tests_path, 'incorrect.expect'))
+	assert incorrect.exit_code == 0, incorrect.output
+
+	expected_out := 'Enter your password : '
+	mut res := os.execute('${os.join_path(expect_tests_path, 'output_from_expect_arg.expect')} "${expected_out}"')
+	assert res.exit_code == 0, res.output
+
+	not_exptectd_out := 'Enter your passwords : '
+	res = os.execute('${os.join_path(expect_tests_path, 'output_from_expect_arg.expect')} "${not_exptectd_out}"')
+	assert res.exit_code == 1, res.output
+}

examples/password/tests/correct.expect

@@ -0,0 +1,12 @@
+#!/usr/bin/expect
+
+set timeout 3
+set v_root [exec sh -c "git rev-parse --show-toplevel"]
+
+spawn $v_root/v run $v_root/examples/password/password.v
+
+expect "Enter your password : " { send "Sample\r" } timeout { exit 1 }
+expect "Confirm password : " { send "Sample\r" } timeout { exit 1 }
+expect "Password confirmed! You entered: Sample ." {}  timeout { exit 1 }
+
+expect eof

examples/password/tests/incorrect.expect

@@ -0,0 +1,12 @@
+#!/usr/bin/expect
+
+set timeout 3
+set v_root [exec sh -c "git rev-parse --show-toplevel"]
+
+spawn $v_root/v run $v_root/examples/password/password.v
+
+expect "Enter your password : " { send "Sample123\r" } timeout { exit 1 }
+expect "Confirm password : " { send "Sample234\r" } timeout { exit 1 }
+expect "Passwords do not match ." {} timeout { exit 1 }
+
+expect eof

examples/password/tests/output_from_expect_arg.expect

@@ -0,0 +1,12 @@
+#!/usr/bin/expect
+
+set timeout 3
+set v_root [exec sh -c "git rev-parse --show-toplevel"]
+# Send expected output as arg to re-use the script for testing incorrect values.
+set expect_ [lindex $argv 0]
+
+spawn $v_root/v run $v_root/examples/password/password.v
+
+expect $expect_ {} timeout {  exit 1 }
+
+expect eof

examples/readline/correct.expect

@@ -1,9 +0,0 @@
-#!/usr/bin/expect
-spawn ./readline_ci
-send "a"
-expect "got 97"
-send "1"
-expect "got 49"
-send "q"
-expect "Goodbye."
-expect eof

examples/readline/readline.v

@@ -8,9 +8,10 @@ fn main() {
 
 fn run() ! {
 	$if windows {
-		eprintln('skipping test on windows for now')
+		eprintln('skipping on Windows, since raw mode and read_char are not yet implemented.')
 		return
 	} $else {
+		// Explicit comptime block for other OSes than Windows is required to not break compilation on Windows.
 		mut r := readline.Readline{}
 		r.enable_raw_mode_nosig()
 		defer {

examples/readline/readline.vsh

@@ -1,2 +0,0 @@
-chdir('examples/readline')!
-assert execute('./correct.expect').exit_code == 0

examples/readline/readline_test.v

@@ -0,0 +1,26 @@
+import os
+
+const (
+	// Expect has to be installed for the test.
+	expect_exe = os.find_abs_path_of_executable('expect') or {
+		eprintln('skipping test, since expect is missing')
+		exit(0)
+	}
+	// Directory that contains the Expect scripts used in the test.
+	expect_tests_path = os.join_path(@VMODROOT, 'examples', 'readline', 'tests')
+)
+
+fn test_password_input() {
+	correct := os.execute(os.join_path(expect_tests_path, 'readline.expect'))
+	assert correct.exit_code == 0, correct.output
+
+	send_a := 'a'
+	expect_a := 'got 97' // readline output for `a`
+	a_res := os.execute('${os.join_path(expect_tests_path, 'readline_from_expect_arg.expect')} ${send_a} "${expect_a}"')
+	assert a_res.exit_code == 0, a_res.output
+
+	send_b := 'b'
+	b_res := os.execute('${os.join_path(expect_tests_path, 'readline_from_expect_arg.expect')} ${send_b} "${expect_a}"')
+	assert b_res.exit_code == 1, b_res.output
+	assert b_res.output.contains('got 98')
+}

examples/readline/tests/readline.expect

@@ -0,0 +1,15 @@
+#!/usr/bin/expect
+
+set timeout 3
+set v_root [exec sh -c "git rev-parse --show-toplevel"]
+
+spawn $v_root/v run $v_root/examples/readline/readline.v
+
+send "a"
+expect "got 97" {} timeout { exit 1 }
+send "1"
+expect "got 49" {} timeout { exit 1 }
+send "q"
+expect "Goodbye." {} timeout { exit 1 }
+
+expect eof

examples/readline/tests/readline_from_expect_arg.expect

@@ -0,0 +1,14 @@
+#!/usr/bin/expect
+
+set timeout 3
+set v_root [exec sh -c "git rev-parse --show-toplevel"]
+# Use input arguments for send and expect.
+set send_ [lindex $argv 0]
+set expect_ [lindex $argv 1]
+
+spawn $v_root/v run $v_root/examples/readline/readline.v
+
+send $send_
+expect $expect_ {} timeout { exit 1 }
+
+expect eof