os: fix exec() and get_raw_line(); fix Windows tests and examples

compiler/tests/fn_test.v

@@ -76,6 +76,7 @@ fn test_mut_array() {
 	mut nums := [1, 2, 3] 
 	modify_array(mut nums) 
 	//assert nums.len == 4 
+	println(nums)
 	assert nums[0] == 20 
 	assert nums[1] == 4
 	assert nums[2] == 6 

compiler/tests/repl/.gitattributes

@@ -0,0 +1,2 @@
+
+*.repl text=auto eol=lf

compiler/tests/repl/repl_test.v

@@ -1,30 +1,67 @@
 import os
 
-fn test_repl() {
-	test_files := os.walk_ext('.', '.repl')
-	wd := os.getwd() + '/'  
-  for file in test_files {
-    content := os.read_file(file) or {
-      assert false
-      break
-    }
-    input_temporary_filename := 'input_temporary_filename.txt'
-    input := content.all_before('===output===\n')
-    output := content.all_after('===output===\n')
-    os.write_file(input_temporary_filename, input)
-    defer {
-      os.rm(input_temporary_filename)
-    }
-    r := os.exec('./v < $input_temporary_filename') or {
-      assert false
-      break
-    }
-    result := r.output.replace('>>> ', '').replace('>>>', '').replace('... ', '').all_after('Use Ctrl-C or `exit` to exit\n').replace( wd, '' )
-    assert result == output
-    if result != output {
-      println(file)
-      println('Got : $result')
-      println('Expected : $output')
-    }
-  }
+fn full_path_to_v() string {
+	vname  := if os.user_os() == 'windows' { 'v.exe' } else { 'v' }
+	vexec := os.dir(os.dir(os.dir(os.dir( os.executable() )))) + os.PathSeparator + vname
+	return vexec
+}
+
+fn test_the_v_compiler_can_be_invoked() {
+	vexec := full_path_to_v()
+	println('vexecutable: $vexec')
+	/*
+	args := os.args
+	vreal  := os.realpath('v')
+	myself := os.realpath( os.executable() )
+	wd := os.getwd() + os.PathSeparator
+	println('args are: $args')
+	println('vreal   : $vreal')
+	println('myself  : $myself')
+	println('wd      : $wd')
+    */
+	assert vexec != ''
+
+	vcmd := '$vexec --version'
+	r := os.exec(vcmd) or { panic(err) }
+	//println('"$vcmd" exit_code: $r.exit_code | output: $r.output')
+	assert r.exit_code == 0
+
+	vcmd_error := '$vexec nonexisting.v'
+	r_error := os.exec(vcmd_error) or { panic(err) }
+	//println('"$vcmd_error" exit_code: $r_error.exit_code | output: $r_error.output')
+	assert r_error.exit_code == 1
+	assert r_error.output == '`nonexisting.v` does not exist'
+}
+
+fn test_the_v_repl() {
+	test_files := os.walk_ext('.', '.repl')
+	wd := os.getwd() + os.PathSeparator
+	vexec := full_path_to_v()
+	
+	for file in test_files {
+		fcontent := os.read_file(file) or {
+			assert false
+			break
+		}
+		content := fcontent.replace('\r', '')		
+		input := content.all_before('===output===\n')
+		output := content.all_after('===output===\n')
+		
+		input_temporary_filename := 'input_temporary_filename.txt'
+		os.write_file(input_temporary_filename, input)
+		defer { os.rm(input_temporary_filename) }		
+		r := os.exec('$vexec < $input_temporary_filename') or {
+			assert false
+			break
+		}
+		result := r.output.replace('\r','').replace('>>> ', '').replace('>>>', '').replace('... ', '').all_after('Use Ctrl-C or `exit` to exit\n').replace( wd, '' )
+		assert result == output
+		if result != output {
+			println(file)
+			println('Got : |$result|')
+			println('Expected : |$output|')
+		} else {
+			println('Repl file $file is OK')
+		}
+	}
 }