1 files changed, 86 insertions, 0 deletions
diff --git a/todotxt_test.go b/todotxt_test.go
new file mode 100644
index 0000000..9090f7b
--- /dev/null
+++ b/todotxt_test.go
@@ -0,0 +1,86 @@
+package todotxt
+
+import (
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestPriorityFromLetter(t *testing.T) {
+	tests := []struct {
+		letter        string
+		expectedError bool
+		expectedVal   int
+	}{
+		{"A", false, 0},
+		{"B", false, 1},
+		{"Z", false, 25},
+		{"a", true, 0},
+		{"AA", true, 0},
+		{"0", true, 0},
+		{"!", true, 0},
+	}
+	for i, test := range tests {
+		p, err := PriorityFromLetter(test.letter)
+		if test.expectedError && err == nil {
+			t.Errorf("expected error on test %d", i+1)
+		}
+		if !test.expectedError && err != nil {
+			t.Errorf("unexpected error on test %d: %v", i+1, err)
+		}
+		if p != Priority(test.expectedVal) {
+			t.Errorf("expected %d, got %d on test %d", test.expectedVal, p, i+1)
+		}
+	}
+}
+
+func TestPriorityToString(t *testing.T) {
+	a, _ := PriorityFromLetter("A")
+	z, _ := PriorityFromLetter("Z")
+	if a.String() != "A" {
+		t.Errorf("Expected A, got %s", a.String())
+	}
+	if z.String() != "Z" {
+		t.Errorf("Expected Z, got %s", z.String())
+	}
+}
+
+func TestItemToString(t *testing.T) {
+	cd, _ := time.Parse("2006-01-02", "2019-04-27")
+	tests := map[string]struct {
+		item     Item
+		expected string
+	}{
+		"simple":           {item: Item{Description: "simple"}, expected: "simple"},
+		"complete":         {item: Item{Complete: true, Description: "complete"}, expected: "x complete"},
+		"completeWithDate": {item: Item{Complete: true, CreationDate: &cd, Description: "complete"}, expected: "x 2019-04-27 complete"},
+		"completeWithTags": {item: Item{Complete: true, Description: "complete", Tags: []Tag{{Key: TagProject, Value: "proj"}, {Key: TagContext, Value: "test"}, {Key: "custom", Value: "tag"}}}, expected: "x complete +proj @test custom:tag"},
+	}
+	for test, v := range tests {
+		t.Run(test, func(t *testing.T) {
+			if v.item.String() != v.expected {
+				t.Errorf("Expected %s got %s", v.expected, v.item.String())
+			}
+		})
+	}
+}
+
+func TestParse(t *testing.T) {
+	input := `(A) Call Mom @Phone +Family
+(A) Schedule annual checkup +Health
+(B) Outline chapter 5 +Novel @Computer
+(C) Add cover sheets @Office +TPSReports
+2019-04-27 Plan backyard herb garden @Home
+2019-05-27 2019-04-27 Pick up milk @GroceryStore
+Research self-publishing services +Novel @Computer
+x Download Todo.txt mobile app @Phone custom:tag`
+	items, err := Parse(input)
+	if err != nil {
+		t.Error(err)
+	}
+	for ln, v := range items {
+		if strings.Split(input, "\n")[ln] != v.String() {
+			t.Logf("line %d expected %s got %s", ln, strings.Split(input, "\n")[ln], v.String())
+		}
+	}
+}