diff options
| -rw-r--r-- | exercises/102_testing.zig | 50 |
1 files changed, 17 insertions, 33 deletions
diff --git a/exercises/102_testing.zig b/exercises/102_testing.zig index 248f5b5..0dec9b9 100644 --- a/exercises/102_testing.zig +++ b/exercises/102_testing.zig @@ -37,63 +37,48 @@ const std = @import("std"); const testing = std.testing; -// This is a simple function -// that builds a sum from the -// passed parameters and returns. +// This is a simple function that builds a sum from the passed parameters and +// returns. fn add(a: f16, b: f16) f16 { return a + b; } -// The associated test. -// It always starts with the keyword "test", -// followed by a description of the tasks -// of the test. This is followed by the -// test cases in curly brackets. +// The associated test. It always starts with the keyword "test", followed by a +// description of the tasks of the test. This is followed by the test cases in +// curly brackets. test "add" { - // The first test checks if the sum - // of '41' and '1' gives '42', which - // is correct. + // The first test checks if the sum of '41' and '1' gives '42', which is + // correct. try testing.expect(add(41, 1) == 42); - // Another way to perform this test - // is as follows: + // Another way to perform this test is as follows: try testing.expectEqual(42, add(41, 1)); - // This time a test with the addition - // of a negative number: + // This time a test with the addition of a negative number: try testing.expect(add(5, -4) == 1); // And a floating point operation: try testing.expect(add(1.5, 1.5) == 3); } -// Another simple function -// that returns the result -// of subtracting the two +// Another simple function that returns the result of subtracting the two // parameters. fn sub(a: f16, b: f16) f16 { return a - b; } -// The corresponding test -// is not much different -// from the previous one. -// Except that it contains -// an error that you need -// to correct. +// The corresponding test is not much different from the previous one. Except +// that it contains an error that you need to correct. test "sub" { try testing.expect(sub(10, 5) == 6); try testing.expect(sub(3, 1.5) == 1.5); } -// This function divides the -// numerator by the denominator. -// Here it is important that the -// denominator must not be zero. -// This is checked and if it -// occurs an error is returned. +// This function divides the numerator by the denominator. Here it is important +// that the denominator must not be zero. This is checked and if it occurs an +// error is returned. fn divide(a: f16, b: f16) !f16 { if (b == 0) return error.DivisionByZero; return a / b; @@ -105,8 +90,7 @@ test "divide" { try testing.expect(divide(10, 2) catch unreachable == 5); try testing.expect(divide(1, 3) catch unreachable == 0.3333333333333333); - // Now we test if the function returns an error - // if we pass a zero as denominator. - // But which error needs to be tested? + // Now we test if the function returns an error if we pass a zero as + // denominator. But which error needs to be tested? try testing.expectError(error.???, divide(15, 0)); } |