package parser

import "testing"

func TestKey(t *testing.T) {
	for _, test := range []parseTest{
		{"", []string{`Error: unexpected end of file (expected a key name) at start of file`}},
		{"barekey", []string{`key("barekey")`}},
	} {
		p := &parser{}
		testParseHandler(t, p, p.startKey, test)
	}
}

func TestBareKey(t *testing.T) {
	for _, test := range []parseTest{
		{"", []string{`Error: unexpected end of file (expected a bare key name) at start of file`}},
		{"barekey", []string{`key("barekey")`}},
		{"1234567", []string{`key("1234567")`}},
		{"mix-12_34", []string{`key("mix-12_34")`}},
		{"-hey_good_Lookin123-", []string{`key("-hey_good_Lookin123-")`}},
		{"wrong!", []string{`key("wrong")`, `Error: unexpected input (expected end of file) at line 1, column 6`}},
		{"key1.", []string{`key("key1")`, `keydot()`, `Error: unexpected end of file (expected a key name) at line 1, column 6`}},
		{"key1.key2", []string{`key("key1")`, `keydot()`, `key("key2")`}},
		{"key . with . spaces", []string{`key("key")`, `keydot()`, `key("with")`, `keydot()`, `key("spaces")`}},
		{"key  \t  . \twithtabs\t . \tandspaces", []string{`key("key")`, `keydot()`, `key("withtabs")`, `keydot()`, `key("andspaces")`}},
	} {
		p := &parser{}
		testParseHandler(t, p, p.startBareKey, test)
	}
}

func TestAssignment(t *testing.T) {
	for _, test := range []parseTest{
		{"", []string{`Error: unexpected end of file (expected a value assignment) at start of file`}},
		{"=", []string{`assign()`}},
		{" \t = \t ", []string{`assign()`}},
		{" \n = \n ", []string{`Error: unexpected input (expected a value assignment) at start of file`}},
	} {
		p := &parser{}
		testParseHandler(t, p, p.startAssignment, test)
	}
}

func TestValue(t *testing.T) {
	for _, test := range []parseTest{
		{``, []string{`Error: unexpected end of file (expected a value) at start of file`}},
		{`"basic string value"`, []string{`string("basic string value")`}},
	} {
		p := &parser{}
		testParseHandler(t, p, p.startValue, test)
	}
}

func TestKeyValuePair(t *testing.T) {
	for _, test := range []parseTest{
		{"", []string{}},
		{" ", []string{}},
		{" \t ", []string{}},
		{" key ", []string{`key("key")`, `Error: unexpected input (expected a value assignment) at line 1, column 5`}},
		{" key \t=", []string{`key("key")`, `assign()`, `Error: unexpected end of file (expected a value) at line 1, column 8`}},
		{" key \t =\t \"The Value\"  \r\n", []string{`key("key")`, `assign()`, `string("The Value")`}},
		{"key1=\"value1\"key2=\"value2\"\r\nkey3=\"value3\"", []string{
			`key("key1")`, `assign()`, `string("value1")`,
			`key("key2")`, `assign()`, `string("value2")`,
			`key("key3")`, `assign()`, `string("value3")`}},
		{"with=\"comments\"# boring \nanother.cool =\"one\" \t # to the end\r\n", []string{
			`key("with")`, `assign()`, `string("comments")`, `comment("# boring ")`,
			`key("another")`, `keydot()`, `key("cool")`, `assign()`, `string("one")`, `comment("# to the end")`}},
	} {
		p := &parser{}
		testParseHandler(t, p, p.startKeyValuePair, test)
	}
}