add exercism 003

practice/exercism/003-party-robot/party_robot.go

@@ -0,0 +1,22 @@
+package partyrobot
+
+import "fmt"
+
+// Welcome greets a person by name.
+func Welcome(name string) string {
+	return fmt.Sprintf("Welcome to my party, %s!", name)
+}
+
+// HappyBirthday wishes happy birthday to the birthday person and exclaims their age.
+func HappyBirthday(name string, age int) string {
+    return fmt.Sprintf("Happy birthday %s! You are now %d years old!", name, age)
+}
+
+// AssignTable assigns a table to each guest.
+func AssignTable(name string, table int, neighbor, direction string, distance float64) string {
+	line1 := fmt.Sprintf("Welcome to my party, %s!", name)
+	line2 := fmt.Sprintf("You have been assigned to table %03d. Your table is %s, exactly %.1f meters from here.", table, direction, distance)
+	line3 := fmt.Sprintf("You will be sitting next to %s.", neighbor)
+
+    return line1 + "\n" + line2 + "\n" + line3
+}

practice/exercism/003-party-robot/party_robot_test.go

@@ -0,0 +1,133 @@
+package partyrobot
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestWelcome(t *testing.T) {
+	tests := []struct {
+		description string
+		name        string
+		want        string
+	}{
+		{
+			description: "Greet Chihiro with a welcoming message",
+			name:        "Chihiro",
+			want:        "Welcome to my party, Chihiro!",
+		},
+		{
+			description: "Greet Xuân Jing with a welcoming message",
+			name:        "Xuân Jing",
+			want:        "Welcome to my party, Xuân Jing!",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.description, func(t *testing.T) {
+			if got := Welcome(tt.name); got != tt.want {
+				t.Errorf("Welcome(%s) = %s, want %s", tt.name, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestHappyBirthday(t *testing.T) {
+	tests := []struct {
+		description string
+		name        string
+		age         int
+		want        string
+	}{
+		{
+			description: "Wish Chihiro Happy Birthday with name and age",
+			name:        "Chihiro",
+			age:         61,
+			want:        "Happy birthday Chihiro! You are now 61 years old!",
+		},
+		{
+			description: "Wish Xuân Jing Happy Birthday with name and age",
+			name:        "Xuân Jing",
+			age:         17,
+			want:        "Happy birthday Xuân Jing! You are now 17 years old!",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.description, func(t *testing.T) {
+			if got := HappyBirthday(tt.name, tt.age); got != tt.want {
+				t.Errorf("HappyBirthday(%s, %d) = %s, want %s", tt.name, tt.age, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestAssignTable(t *testing.T) {
+	tests := []struct {
+		description string
+		name        string
+		direction   string
+		tableNumber int
+		distance    float64
+		seatmate    string
+		want        string
+	}{
+		{
+			description: "Greet Chihiro and give them directions to their seat",
+			name:        "Chihiro",
+			direction:   "straight ahead",
+			tableNumber: 22,
+			distance:    9.2394381,
+			seatmate:    "Akachi Chikondi",
+			want:        "Welcome to my party, Chihiro!\nYou have been assigned to table 022. Your table is straight ahead, exactly 9.2 meters from here.\nYou will be sitting next to Akachi Chikondi.",
+		},
+		{
+			description: "Greet Xuân Jing and give them directions to their seat",
+			name:        "Xuân Jing",
+			direction:   "by the façade",
+			tableNumber: 4,
+			distance:    23.470103,
+			seatmate:    "Renée",
+			want:        "Welcome to my party, Xuân Jing!\nYou have been assigned to table 004. Your table is by the façade, exactly 23.5 meters from here.\nYou will be sitting next to Renée.",
+		},
+		{
+			description: "Greet Paula and give them directions to their seat",
+			name:        "Paula",
+			direction:   "on the right",
+			tableNumber: 101,
+			distance:    100.0,
+			seatmate:    "Chioma",
+			want:        "Welcome to my party, Paula!\nYou have been assigned to table 101. Your table is on the right, exactly 100.0 meters from here.\nYou will be sitting next to Chioma.",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.description, func(t *testing.T) {
+			if got := AssignTable(tt.name, tt.tableNumber, tt.seatmate, tt.direction, tt.distance); got != tt.want {
+				t.Errorf(`AssignTable(%s,%d,%s,%s,%f)
+got:
+%q
+want:
+%q`,
+					tt.name, tt.tableNumber, tt.seatmate, tt.direction, tt.distance, got, tt.want)
+
+				wantLen := len(tt.want)
+				gotLen := len(got)
+				wantNewlines := strings.Count(tt.want, "\n")
+				gotNewlines := strings.Count(got, "\n")
+				wantSpaces := strings.Count(tt.want, " ")
+				gotSpaces := strings.Count(got, " ")
+
+				if wantLen != gotLen {
+					t.Errorf("String lengths do not match - got: %d, want: %d", gotLen, wantLen)
+				}
+
+				if wantNewlines != gotNewlines {
+					t.Errorf("Check your newline characters - got: %d, want: %d", gotNewlines, wantNewlines)
+				}
+
+				if wantSpaces != gotSpaces {
+					t.Errorf("Check your space characters - got: %d, want: %d", gotSpaces, wantSpaces)
+				}
+
+			}
+		})
+	}
+}