Add more tests

editor/editor_test.go

@@ -0,0 +1,35 @@
+package editor
+
+import "testing"
+
+func TestNew(t *testing.T) {
+	e := New()
+
+	if e == nil {
+		t.Errorf("Failed to create editor")
+	}
+}
+
+func TestAppendRow(t *testing.T) {
+	e := New()
+	e.appendRow("Test Row")
+
+	got := len(e.rows)
+	want := 1
+
+	if got != want {
+		t.Errorf("Failed to add a row to the editor")
+	}
+}
+
+func TestRowCount(t *testing.T) {
+	e := New()
+	e.appendRow("Test Row")
+
+	got := e.rowCount()
+	want := 1
+
+	if got != want {
+		t.Errorf("Expected %d rows, got %d rows", want, got)
+	}
+}

editor/row_test.go

@@ -25,3 +25,16 @@ func TestRowSize(t *testing.T) {
 		t.Errorf("Row size not equal to number of runes in original string")
 	}
 }
+
+func TestRenderSize(t *testing.T) {
+	str := "\tabcdefg"
+	row := newRow(str)
+	row.update()
+
+	got := row.rSize()
+	want := 11
+
+	if got != want {
+		t.Errorf("Row rsize not equal to number of runes in original string")
+	}
+}

terminal/raw.go

@@ -8,8 +8,6 @@ import (
 
 // Put the terminal in raw mode
 func RawOn() *term.State {
-	check()
-
 	oldState, err := term.MakeRaw(int(os.Stdin.Fd()))
 	if err != nil {
 		panic(err)
@@ -25,10 +23,3 @@ func RawOff(oldState *term.State) {
 		panic(err)
 	}
 }
-
-// Is this a valid interactive terminal?
-func check() {
-	if !term.IsTerminal(int(os.Stdin.Fd())) {
-		panic("An interactive terminal is required to use a text editor!")
-	}
-}

terminal/size.go

@@ -13,8 +13,6 @@ type Screen struct {
 
 // Get the size of the terminal in rows and columns
 func Size () *Screen {
-	check()
-
 	cols := 80
 	rows := 24
 
@@ -25,7 +23,9 @@ func Size () *Screen {
 	}
 
 	// Figure out the size the hard way
+	if term.IsTerminal(int(os.Stdin.Fd())) {
 		rows, cols = sizeTrick()
+	}
 
 	return &Screen{ rows, cols }
 }