Add some tests

response_test.go

@@ -0,0 +1,104 @@
+package gemini
+
+import (
+	"io"
+	"io/ioutil"
+	"strings"
+	"testing"
+)
+
+func TestReadResponse(t *testing.T) {
+	tests := []struct {
+		Raw    string
+		Status int
+		Meta   string
+		Body   string
+		Err    error
+	}{
+		{
+			Raw:    "20 text/gemini\r\nHello, world!\nWelcome to my capsule.",
+			Status: 20,
+			Meta:   "text/gemini",
+			Body:   "Hello, world!\nWelcome to my capsule.",
+		},
+		{
+			Raw:    "10 Search query\r\n",
+			Status: 10,
+			Meta:   "Search query",
+		},
+		{
+			Raw:    "30 /redirect\r\n",
+			Status: 30,
+			Meta:   "/redirect",
+		},
+		{
+			Raw:    "31 /redirect\r\nThis body is ignored.",
+			Status: 31,
+			Meta:   "/redirect",
+		},
+		{
+			Raw:    "99 Unknown status code\r\n",
+			Status: 99,
+			Meta:   "Unknown status code",
+		},
+		{
+			Raw: "\r\n",
+			Err: ErrInvalidResponse,
+		},
+		{
+			Raw: "\n",
+			Err: ErrInvalidResponse,
+		},
+		{
+			Raw: "1 Bad response\r\n",
+			Err: ErrInvalidResponse,
+		},
+		{
+			Raw: "",
+			Err: io.EOF,
+		},
+		{
+			Raw: "10 Search query",
+			Err: io.EOF,
+		},
+		{
+			Raw: "20 text/gemini\nHello, world!",
+			Err: io.EOF,
+		},
+		{
+			Raw: "20 text/gemini\rHello, world!",
+			Err: ErrInvalidResponse,
+		},
+		{
+			Raw: "20 text/gemini\r",
+			Err: io.EOF,
+		},
+		{
+			Raw: "abcdefghijklmnopqrstuvwxyz",
+			Err: ErrInvalidResponse,
+		},
+	}
+
+	for _, test := range tests {
+		t.Logf("%#v", test.Raw)
+		resp, err := ReadResponse(ioutil.NopCloser(strings.NewReader(test.Raw)))
+		if err != test.Err {
+			t.Errorf("expected err = %v, got %v", test.Err, err)
+		}
+		if test.Err != nil {
+			// No response
+			continue
+		}
+		if resp.Status != test.Status {
+			t.Errorf("expected status = %d, got %d", test.Status, resp.Status)
+		}
+		if resp.Meta != test.Meta {
+			t.Errorf("expected meta = %s, got %s", test.Meta, resp.Meta)
+		}
+		b, _ := ioutil.ReadAll(resp.Body)
+		body := string(b)
+		if body != test.Body {
+			t.Errorf("expected body = %#v, got %#v", test.Body, body)
+		}
+	}
+}