Fix configuration file extension from conf to toml

README.md

@@ -93,23 +93,23 @@ cd /path/to/your_project
 The simplest usage is run
 
 ```bash
-# firstly find `.air.conf` in current directory, if not found, use defaults
-air -c .air.conf
+# firstly find `.air.toml` in current directory, if not found, use defaults
+air -c .air.toml
 ```
 
 While I prefer the second way
 
 ```bash
 # 1. create a new file
-touch .air.conf
+touch .air.toml
 
-# 2. paste `air.conf.example` into this file, and **modify it** to satisfy your needs.
+# 2. paste `air_example.toml` into this file, and **modify it** to satisfy your needs.
 
-# 3. run air with your config. If file name is `.air.conf`, just run `air`.
+# 3. run air with your config. If file name is `.air.toml`, just run `air`.
 air
 ```
 
-See the complete [air_example.conf](air_example.conf)
+See the complete [air_example.toml](air_example.toml)
 
 ### Debug
 

runner/_testdata/both/.air.conf

@@ -0,0 +1 @@
+root = "invalid"

runner/_testdata/both/.air.toml

@@ -0,0 +1 @@
+root = "both_root"

runner/_testdata/conf/.air.conf

@@ -0,0 +1 @@
+root = "conf_root"

runner/_testdata/toml/.air.toml

@@ -0,0 +1 @@
+root = "toml_root"

runner/config.go

@@ -1,6 +1,7 @@
 package runner
 
 import (
+	"fmt"
 	"io/ioutil"
 	"os"
 	"path/filepath"
@@ -13,6 +14,7 @@ import (
 )
 
 const (
+	dftTOML = ".air.toml"
 	dftConf = ".air.conf"
 	airWd   = "air_wd"
 )
@@ -59,16 +61,10 @@ type cfgMisc struct {
 
 func initConfig(path string) (cfg *config, err error) {
 	if path == "" {
-		// when path is blank, first find `.air.conf` in `air_wd` and current working directory, if not found, use defaults
-		if wd := os.Getenv(airWd); wd != "" {
-			path = filepath.Join(wd, dftConf)
-		} else {
-			path, err = dftConfPath()
-			if err != nil {
-				return nil, err
-			}
+		cfg, err = defaultPathConfig()
+		if err != nil {
+			return nil, err
 		}
-		cfg, _ = readConfigOrDefault(path)
 	} else {
 		cfg, err = readConfigOrDefault(path)
 		if err != nil {
@@ -83,6 +79,34 @@ func initConfig(path string) (cfg *config, err error) {
 	return cfg, err
 }
 
+func defaultPathConfig() (*config, error) {
+	// when path is blank, first find `.air.toml`, `.air.conf` in `air_wd` and current working directory, if not found, use defaults
+	for _, name := range []string{dftTOML, dftConf} {
+		var path string
+		if wd := os.Getenv(airWd); wd != "" {
+			path = filepath.Join(wd, name)
+		} else {
+			wd, err := os.Getwd()
+			if err != nil {
+				return nil, err
+			}
+			path = filepath.Join(wd, name)
+		}
+
+		cfg, err := readConfig(path)
+		if err == nil {
+			if name == dftConf {
+				fmt.Println("`.air.conf` will be deprecated soon, recommend using `.air.toml`.")
+			}
+
+			return cfg, nil
+		}
+	}
+
+	dftCfg := defaultConfig()
+	return &dftCfg, nil
+}
+
 func defaultConfig() config {
 	build := cfgBuild{
 		Cmd:         "go build -o ./tmp/main .",
@@ -119,16 +143,27 @@ func defaultConfig() config {
 	}
 }
 
-func readConfigOrDefault(path string) (*config, error) {
-	dftCfg := defaultConfig()
+func readConfig(path string) (*config, error) {
 	data, err := ioutil.ReadFile(path)
 	if err != nil {
-		return &dftCfg, err
+		return nil, err
 	}
+
 	cfg := new(config)
 	if err = toml.Unmarshal(data, cfg); err != nil {
+		return nil, err
+	}
+
+	return cfg, nil
+}
+
+func readConfigOrDefault(path string) (*config, error) {
+	dftCfg := defaultConfig()
+	cfg, err := readConfig(path)
+	if err != nil {
 		return &dftCfg, err
 	}
+
 	return cfg, nil
 }
 
@@ -202,14 +237,6 @@ func (c *config) colorInfo() map[string]string {
 	}
 }
 
-func dftConfPath() (string, error) {
-	wd, err := os.Getwd()
-	if err != nil {
-		return "", err
-	}
-	return filepath.Join(wd, dftConf), nil
-}
-
 func (c *config) buildLogPath() string {
 	return filepath.Join(c.tmpPath(), c.Build.Log)
 }

runner/config_test.go

@@ -1,6 +1,7 @@
 package runner
 
 import (
+	"os"
 	"runtime"
 	"strings"
 	"testing"
@@ -63,3 +64,42 @@ func TestBinCmdPath(t *testing.T) {
 		}
 	}
 }
+
+func TestDefaultPathConfig(t *testing.T) {
+	tests := []struct {
+		name string
+		path string
+		root string
+	}{{
+		name: "Invalid Path",
+		path: "invalid/path",
+		root: ".",
+	}, {
+		name: "TOML",
+		path: "_testdata/toml",
+		root: "toml_root",
+	}, {
+		name: "Conf",
+		path: "_testdata/conf",
+		root: "conf_root",
+	}, {
+		name: "Both",
+		path: "_testdata/both",
+		root: "both_root",
+	}}
+
+	for _, tt := range tests {
+		tt := tt
+		t.Run(tt.name, func(t *testing.T) {
+			os.Setenv(airWd, tt.path)
+			c, err := defaultPathConfig()
+			if err != nil {
+				t.Fatalf("Should not be fail: %s.", err)
+			}
+
+			if got, want := c.Root, tt.root; got != want {
+				t.Fatalf("Root is %s, but want %s.", got, want)
+			}
+		})
+	}
+}