cli: allow flag to be set multi time (#8256)

vlib/cli/flag_test.v

@@ -5,10 +5,43 @@ fn test_if_string_flag_parses() {
 		flag: .string
 		name: 'flag'
 	}
-	flag.parse(['-flag', 'value'], false) or { panic(err) }
-	assert flag.value == 'value'
-	flag.parse(['-flag=value'], false) or { panic(err) }
-	assert flag.value == 'value'
+	flag.parse(['-flag', 'value1'], false) or { panic(err) }
+	mut value := flag.get_string() or { panic(err) }
+	assert value == 'value1'
+
+	flag = cli.Flag{
+		flag: .string
+		name: 'flag'
+	}
+	flag.parse(['-flag=value2'], false) or { panic(err) }
+	value = flag.get_string() or { panic(err) }
+	assert value == 'value2'
+
+	flag = cli.Flag{
+		flag: .string
+		name: 'flag'
+		multipe: true
+	}
+	flag.parse(['-flag=value1'], false) or { panic(err) }
+	flag.parse(['-flag=value2'], false) or { panic(err) }
+	mut values := flag.get_strings() or { panic(err) }
+	assert values == ['value1', 'value2']
+
+	flags := [
+		cli.Flag{
+			flag: .string
+			name: 'flag'
+			multipe: true
+			value: ['a', 'b', 'c']
+		},
+		cli.Flag{
+			flag: .string
+			name: 'flag2'
+		},
+	]
+
+	values = flags.get_strings('flag') or { panic(err) }
+	assert values == ['a', 'b', 'c']
 }
 
 fn test_if_bool_flag_parses() {
@@ -20,18 +53,18 @@ fn test_if_bool_flag_parses() {
 	flag.parse(['-flag'], false) or { panic(err) }
 	value = flag.get_bool() or { panic(err) }
 	assert value == true
-	flag.parse(['-flag', 'true'], false) or { panic(err) }
-	value = flag.get_bool() or { panic(err) }
-	assert value == true
-	flag.parse(['-flag=true'], false) or { panic(err) }
-	value = flag.get_bool() or { panic(err) }
-	assert value == true
 	flag.parse(['-flag', 'false'], false) or { panic(err) }
 	value = flag.get_bool() or { panic(err) }
 	assert value == false
+	flag.parse(['-flag', 'true'], false) or { panic(err) }
+	value = flag.get_bool() or { panic(err) }
+	assert value == true
 	flag.parse(['-flag=false'], false) or { panic(err) }
 	value = flag.get_bool() or { panic(err) }
 	assert value == false
+	flag.parse(['-flag=true'], false) or { panic(err) }
+	value = flag.get_bool() or { panic(err) }
+	assert value == true
 }
 
 fn test_if_int_flag_parses() {
@@ -39,13 +72,47 @@ fn test_if_int_flag_parses() {
 		flag: .int
 		name: 'flag'
 	}
+
 	mut value := 0
 	flag.parse(['-flag', '42'], false) or { panic(err) }
 	value = flag.get_int() or { panic(err) }
 	assert value == 42
-	flag.parse(['-flag=42'], false) or { panic(err) }
+
+	flag = cli.Flag{
+		flag: .int
+		name: 'flag'
+	}
+
+	flag.parse(['-flag=45'], false) or { panic(err) }
 	value = flag.get_int() or { panic(err) }
-	assert value == 42
+	assert value == 45
+
+	flag = cli.Flag{
+		flag: .int
+		name: 'flag'
+		multipe: true
+	}
+
+	flag.parse(['-flag=42'], false) or { panic(err) }
+	flag.parse(['-flag=45'], false) or { panic(err) }
+	mut values := flag.get_ints() or { panic(err) }
+	assert values == [42, 45]
+
+	flags := [
+		cli.Flag{
+			flag: .int
+			name: 'flag'
+			multipe: true
+			value: ['1', '2', '3']
+		},
+		cli.Flag{
+			flag: .int
+			name: 'flag2'
+		},
+	]
+
+	values = flags.get_ints('flag') or { panic(err) }
+	assert values == [1, 2, 3]
 }
 
 fn test_if_float_flag_parses() {
@@ -54,13 +121,46 @@ fn test_if_float_flag_parses() {
 		name: 'flag'
 	}
 	mut value := f64(0)
-	flag.parse(['-flag', '3.14159'], false) or { panic(err) }
+	flag.parse(['-flag', '3.14158'], false) or { panic(err) }
 	value = flag.get_float() or { panic(err) }
-	assert value == 3.14159
+	assert value == 3.14158
+
+	flag = cli.Flag{
+		flag: .float
+		name: 'flag'
+	}
+
 	flag.parse(['-flag=3.14159'], false) or { panic(err) }
-	assert flag.value.f64() == 3.14159
+	assert flag.value[0].f64() == 3.14159
 	value = flag.get_float() or { panic(err) }
 	assert value == 3.14159
+
+	flag = cli.Flag{
+		flag: .float
+		name: 'flag'
+		multipe: true
+	}
+
+	flag.parse(['-flag=3.1'], false) or { panic(err) }
+	flag.parse(['-flag=1.3'], false) or { panic(err) }
+	mut values := flag.get_floats() or { panic(err) }
+	assert values == [3.1, 1.3]
+
+	flags := [
+		cli.Flag{
+			flag: .float
+			name: 'flag'
+			multipe: true
+			value: ['1.1', '2.2', '3.3']
+		},
+		cli.Flag{
+			flag: .float
+			name: 'flag2'
+		},
+	]
+
+	values = flags.get_floats('flag') or { panic(err) }
+	assert values == [1.1, 2.2, 3.3]
 }
 
 fn test_if_flag_parses_with_abbrev() {
@@ -73,7 +173,29 @@ fn test_if_flag_parses_with_abbrev() {
 	flag.parse(['--flag'], true) or { panic(err) }
 	value = flag.get_bool() or { panic(err) }
 	assert value == true
-	flag.parse(['-flag'], true) or { panic(err) }
+
+	value = false
+	flag = cli.Flag{
+		flag: .bool
+		name: 'flag'
+		abbrev: 'f'
+	}
+	flag.parse(['-f'], true) or { panic(err) }
 	value = flag.get_bool() or { panic(err) }
 	assert value == true
 }
+
+fn test_if_multiple_value_on_single_value() {
+	mut flag := cli.Flag{
+		flag: .float
+		name: 'flag'
+	}
+
+	flag.parse(['-flag', '3.14158'], false) or { panic(err) }
+
+	if _ := flag.parse(['-flag', '3.222'], false) {
+		panic("No multiple value flag don't raise an error!")
+	} else {
+		assert true
+	}
+}