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Merge pull request #4 from nao1215/nchika/add-standard-rate
Add GetRate()
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| package coincheck | ||
|
|
||
| import ( | ||
| "context" | ||
| "net/http" | ||
| ) | ||
|
|
||
| // GetRateInput represents the input for the GetStandardRate function. | ||
| type GetRateInput struct { | ||
| // Pair is the pair of the currency. e.g. btc_jpy. | ||
| Pair Pair | ||
| } | ||
|
|
||
| // GetRateResponse represents the output from GetStandardRate. | ||
| type GetRateResponse struct { | ||
| // Rate is the standard rate. | ||
| Rate string `json:"rate"` | ||
| } | ||
|
|
||
| // GetRate returns the standard rate. | ||
| // API: GET /api/rate/[pair] | ||
| // Visibility: Public | ||
| // If you set don't set the pair, this function will return the standard rate of BTC/JPY. | ||
| func (c *Client) GetRate(ctx context.Context, input GetRateInput) (*GetRateResponse, error) { | ||
| pair := PairBTCJPY | ||
| if input.Pair != "" { | ||
| pair = input.Pair | ||
| } | ||
|
|
||
| req, err := c.createRequest(ctx, createRequestInput{ | ||
| method: http.MethodGet, | ||
| path: "/api/rate/" + pair.String(), | ||
| }) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| var output GetRateResponse | ||
| if err := c.do(req, &output); err != nil { | ||
| return nil, err | ||
| } | ||
| return &output, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| package coincheck | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "net/http" | ||
| "net/http/httptest" | ||
| "testing" | ||
|
|
||
| "github.com/google/go-cmp/cmp" | ||
| ) | ||
|
|
||
| func TestClient_GetStandardRate(t *testing.T) { | ||
| t.Run("GetStandardRate returns the standard rate", func(t *testing.T) { | ||
| testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | ||
| wantMethod := http.MethodGet | ||
| if got := r.Method; got != wantMethod { | ||
| t.Errorf("Method: got %v, want %v", got, wantMethod) | ||
| } | ||
|
|
||
| wantEndpoint := "/api/rate/etc_jpy" | ||
| if got := r.URL.Path; got != wantEndpoint { | ||
| t.Errorf("Endpoint: got %v, want %v", got, wantEndpoint) | ||
| } | ||
|
|
||
| result := GetRateResponse{ | ||
| Rate: "1000000", | ||
| } | ||
| if err := json.NewEncoder(w).Encode(result); err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| })) | ||
|
|
||
| client, err := NewClient(WithBaseURL(testServer.URL)) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| got, err := client.GetRate(context.Background(), GetRateInput{Pair: PairETCJPY}) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| want := &GetRateResponse{ | ||
| Rate: "1000000", | ||
| } | ||
| if diff := cmp.Diff(want, got); diff != "" { | ||
| printDiff(t, diff) | ||
| } | ||
| }) | ||
|
|
||
| t.Run("GetStandardRate returns an error", func(t *testing.T) { | ||
| testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) { | ||
| http.Error(w, "Internal Server Error", http.StatusInternalServerError) | ||
| })) | ||
|
|
||
| client, err := NewClient(WithBaseURL(testServer.URL)) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| if _, err = client.GetRate(context.Background(), GetRateInput{Pair: PairETCJPY}); err == nil { | ||
| t.Fatal("expected an error, but got nil") | ||
| } | ||
| }) | ||
|
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||
| t.Run("If the pair is empty, GetStandardRate returns the btc_jpy rate", func(t *testing.T) { | ||
| testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | ||
| wantMethod := http.MethodGet | ||
| if got := r.Method; got != wantMethod { | ||
| t.Errorf("Method: got %v, want %v", got, wantMethod) | ||
| } | ||
|
|
||
| wantEndpoint := "/api/rate/btc_jpy" | ||
| if got := r.URL.Path; got != wantEndpoint { | ||
| t.Errorf("Endpoint: got %v, want %v", got, wantEndpoint) | ||
| } | ||
|
|
||
| result := GetRateResponse{ | ||
| Rate: "1000000", | ||
| } | ||
| if err := json.NewEncoder(w).Encode(result); err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| })) | ||
|
|
||
| client, err := NewClient(WithBaseURL(testServer.URL)) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
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| got, err := client.GetRate(context.Background(), GetRateInput{Pair: ""}) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| want := &GetRateResponse{ | ||
| Rate: "1000000", | ||
| } | ||
| if diff := cmp.Diff(want, got); diff != "" { | ||
| printDiff(t, diff) | ||
| } | ||
| }) | ||
| } |