vlib: add toml module + tests (#11964)

vlib/toml/tests/datetime_test.v

@@ -0,0 +1,73 @@
+import toml
+import time
+
+fn test_dates() {
+	toml_txt := '
+	# Offset Date-Time
+	odt1 = 1979-05-27T07:32:00Z
+	odt2 = 1979-05-27T00:32:00-07:00
+	odt3 = 1979-05-27T00:32:00.999999-07:00
+	odt4 = 1979-05-27 07:32:00Z
+	# Local Date-Time
+	ldt1 = 1979-05-27T07:32:00
+	ldt2 = 1979-05-27T00:32:00.999999
+	# Local Date
+	ld1 = 1979-05-27
+	# Local Time
+	lt1 = 07:32:00
+	lt2 = 00:32:00.999999
+'
+	toml_doc := toml.parse(toml_txt) or { panic(err) }
+
+	// Re-use vars
+	mut odt_time := time.parse_rfc3339('1979-05-27T07:32:00Z') or { panic(err) }
+	mut odt_str := toml_doc.value('odt1').string()
+
+	// odt1 test section
+	assert odt_str == '1979-05-26 07:32:00.000000' // W00t?! why 26th? Z=UTC?
+	odt1 := toml_doc.value('odt1')
+	assert odt1.datetime() == odt_time
+
+	// odt2 test section
+	odt_time = time.parse_rfc3339('1979-05-27T00:32:00-07:00') or { panic(err) }
+	odt2 := toml_doc.value('odt2')
+	assert odt2.datetime() == odt_time
+
+	// odt3 test section
+	odt_time = time.parse_rfc3339('1979-05-27T00:32:00.999999-07:00') or { panic(err) }
+	odt3 := toml_doc.value('odt3')
+	assert odt3.datetime() == odt_time
+
+	// odt4 test section
+	odt_time = time.parse_rfc3339('1979-05-27 07:32:00Z') or { panic(err) }
+	odt4 := toml_doc.value('odt4')
+	assert odt4.datetime() == odt_time
+
+	// ldt1 test section
+	odt_time = time.parse_rfc3339('1979-05-27T07:32:00') or { panic(err) }
+	ldt1 := toml_doc.value('ldt1')
+	assert ldt1.datetime() == odt_time
+
+	// ldt2 test section
+	odt_time = time.parse_rfc3339('1979-05-27T00:32:00.999999') or { panic(err) }
+	ldt2 := toml_doc.value('ldt2')
+	assert ldt2.datetime() == odt_time
+
+	// ld1 test section
+	odt_time = time.parse_rfc3339('1979-05-27') or { panic(err) }
+	ld1 := toml_doc.value('ld1')
+	assert ld1.datetime() == odt_time
+	assert ld1.string() == '1979-05-27 00:00:00.000000'
+
+	// lt1 test section
+	odt_time = time.parse_rfc3339('07:32:00') or { panic(err) }
+	lt1 := toml_doc.value('lt1')
+	assert lt1.datetime() == odt_time
+	assert lt1.string() == '0000-00-00 07:32:00.000000'
+
+	// lt2 test section
+	odt_time = time.parse_rfc3339('00:32:00.999999') or { panic(err) }
+	lt2 := toml_doc.value('lt2')
+	assert lt2.datetime() == odt_time
+	assert lt2.string() == '0000-00-00 00:32:00.999999'
+}